{"title":"DIN 985 Class 4 Zinc Finish Steel Nylon Insert Lock Nut","description":"\u003ch1\u003eDIN 985 Hexagon Nylon Insert Lock Nuts – Class 4 Zinc Finish Steel (ML08AL)\u003c\/h1\u003e\n\n\u003cp\u003eFULLERKREG DIN 985 Class 4 nylon insert lock nuts are manufactured from ML08AL low carbon steel with a Zinc Cr3 (trivalent chromium) electroplated finish, delivering reliable corrosion protection and a clean, uniform appearance. The integrated nylon collar creates a friction-based prevailing torque that resists loosening under vibration and dynamic loads — without damaging the mating thread. A cost-effective solution for general mechanical assemblies, automotive components, and industrial equipment where carbon steel performance is required.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003cth style=\"border:1px solid #ddd;padding:8px;text-align:left;\"\u003eAttribute\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:8px;text-align:left;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eStandard\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eDIN 985 \/ ISO 7042\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eHexagon Nylon Insert Lock Nut (Prevailing Torque)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eML08AL Low Carbon Steel (Q195 equivalent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eStrength Class\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eClass 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eSurface Finish\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eZinc Cr3 (Trivalent Chromium Electroplating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eZinc Layer Thickness\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e≥ 5 μm (standard); ≥ 8 μm available on request\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eThread\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eMetric Coarse Thread (ISO 68-1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eSize Range\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eM3 – M20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eInsert Material\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eNylon (Polyamide PA66)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eTemperature Range\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e-40°C to +120°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eRoHS Compliant\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eYes (Cr3 \/ Trivalent — no hexavalent chromium)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eFULLERKREG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eDimensional Data (DIN 985 – Class 4, Metric)\u003c\/h2\u003e\n\u003cp\u003eAll dimensions in millimeters (mm). Unit weight (单重) is approximate reference value.\u003c\/p\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003cth style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eNominal Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003ePitch (mm)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eF – Width Across Flats Max (mm)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eF – Width Across Flats Min (mm)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eG – Width Across Corners Min (mm)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eH – Thickness Max (mm)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eH – Thickness Min (mm)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eI – Wrenching Height Min (mm)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e单重 (g\/pc)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eM3\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e0.5\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e5.50\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e5.32\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e6.01\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e4.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e3.7\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e2.4\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e~0.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa;\"\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eM4\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e0.7\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e7.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e6.78\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e7.66\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e5.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e4.7\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e2.9\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e~1.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eM5\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e0.8\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e8.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e7.78\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e8.79\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e5.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e4.7\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e3.2\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e~2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa;\"\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eM6\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e1.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e10.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e9.78\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e11.05\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e6.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e5.7\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e4.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e~3.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eM7\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e1.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e11.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e10.73\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e12.12\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e7.5\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e7.14\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e4.7\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e~5.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa;\"\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eM8\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e1.25\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e13.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e12.73\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e14.38\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e8.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e7.64\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e5.6\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e~7.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eM10\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e1.5\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e17.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e16.73\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e18.90\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e10.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e9.64\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e6.5\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e~14\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa;\"\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eM12\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e1.75\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e19.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e18.67\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e21.10\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e12.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e11.57\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e8.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e~23\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eM14\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e2.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e22.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e21.67\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e24.49\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e14.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e13.3\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e9.5\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e~37\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa;\"\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eM16\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e2.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e24.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e23.67\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e26.75\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e16.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e15.3\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e10.5\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e~55\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eM18\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e2.5\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e27.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e26.16\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e29.56\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e18.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e17.66\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e13.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e~78\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa;\"\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003eM20\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e2.5\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e30.00\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e29.16\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e32.95\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e20.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e19.7\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e14.0\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:7px;text-align:center;\"\u003e~110\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size:12px;color:#888;\"\u003e* Dimensions per DIN 985 \/ ISO 7042. Unit weight values are approximate and for reference only. Carbon steel density ≈ 7.85 g\/cm³. Actual weight may vary slightly by batch.\u003c\/p\u003e\n\n\u003ch2\u003eZinc Cr3 Surface Finish – Technical Notes\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;\"\u003eProperty\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;\"\u003eZinc Cr3 (This Product)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;\"\u003ePlain \/ Black Oxide\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eChromium Type\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eTrivalent Cr3 (RoHS compliant)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa;\"\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eSalt Spray Resistance\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e≥ 72 hrs (white rust); ≥ 120 hrs (red rust)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eVery low (\u0026lt; 24 hrs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eAppearance\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eBright silver \/ slight blue iridescence\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eMatte black \/ grey\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa;\"\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eRoHS \/ ELV Compliant\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eTypical Application\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eGeneral industrial, automotive, machinery\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eIndoor \/ dry environments only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eSelection Guide\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background:#f0f0f0;\"\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;\"\u003eApplication Scenario\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;\"\u003eRecommended Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;\"\u003eKey Consideration\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eGeneral machinery \u0026amp; equipment\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eM6 – M16\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eCost-effective vibration-proof fastening\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa;\"\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eAutomotive body \u0026amp; chassis\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eM8 – M16\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eZinc Cr3 meets OEM corrosion requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eElectronics \u0026amp; appliance enclosures\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eM3 – M6\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eSmall sizes, clean finish, RoHS compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa;\"\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eSteel structures \u0026amp; brackets\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eM10 – M20\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eHigh volume, economical Class 4 grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eHVAC \u0026amp; ductwork\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eM6 – M12\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eVibration resistance in air-handling systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eStandard \u0026amp; Compliance\u003c\/h2\u003e\n\u003cp\u003eThese nylon insert lock nuts are manufactured in full compliance with \u003cstrong\u003eDIN 985\u003c\/strong\u003e and the equivalent international standard \u003cstrong\u003eISO 7042\u003c\/strong\u003e. Mechanical properties conform to \u003cstrong\u003eISO 898-2 Class 4\u003c\/strong\u003e. Surface treatment meets \u003cstrong\u003eISO 4042\u003c\/strong\u003e (electroplated zinc coatings) with trivalent chromate passivation (Cr3), fully compliant with \u003cstrong\u003eRoHS 2011\/65\/EU\u003c\/strong\u003e and \u003cstrong\u003eELV 2000\/53\/EC\u003c\/strong\u003e directives — no hexavalent chromium (Cr6).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProof Load (N\/mm²): 510 (Class 4)\u003c\/li\u003e\n\u003cli\u003eHardness: 188 HV max\u003c\/li\u003e\n\u003cli\u003eApplicable bolt class: Class 4.8 or less\u003c\/li\u003e\n\u003cli\u003eSalt spray test: ≥ 72 hrs white rust \/ ≥ 120 hrs red rust (per ISO 9227)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProduct Gallery\u003c\/h2\u003e\n\u003cp\u003eDIN 985 Class 4 Zinc Finish Steel Nylon Insert Lock Nuts – actual product photos:\u003c\/p\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:25%;padding:8px;text-align:center;border:1px solid #eee;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"width:25%;padding:8px;text-align:center;border:1px solid #eee;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"width:25%;padding:8px;text-align:center;border:1px solid #eee;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"width:25%;padding:8px;text-align:center;border:1px solid #eee;\"\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhy Choose FULLERKREG?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e🏭 \u003cstrong\u003eDirect Manufacturer\u003c\/strong\u003e – Factory-direct pricing with no middlemen, ensuring competitive wholesale rates\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eStrict Quality Control\u003c\/strong\u003e – 100% dimensional inspection; salt spray test reports and material certificates available on request\u003c\/li\u003e\n\u003cli\u003e📦 \u003cstrong\u003eFlexible MOQ \u0026amp; Packaging\u003c\/strong\u003e – Custom packaging quantities, OEM labeling, bulk bag or box options\u003c\/li\u003e\n\u003cli\u003e🚢 \u003cstrong\u003eGlobal Shipping\u003c\/strong\u003e – FBA-ready shipments to Amazon warehouses; direct export to 50+ countries\u003c\/li\u003e\n\u003cli\u003e🔬 \u003cstrong\u003eEngineering Support\u003c\/strong\u003e – Technical datasheets, CAD drawings, and application guidance available\u003c\/li\u003e\n\u003cli\u003e⚡ \u003cstrong\u003eFast Lead Times\u003c\/strong\u003e – In-stock items ship within 3–5 business days; custom orders within 15–25 days\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Zinc Cr3 and Zinc Cr6 (yellow zinc)?\u003c\/strong\u003e\u003cbr\u003eA: Cr3 uses trivalent chromium passivation and is fully RoHS \/ ELV compliant with no hazardous hexavalent chromium. Cr6 (yellow zinc) offers slightly higher corrosion resistance but is restricted under EU environmental regulations. FULLERKREG supplies Cr3 as standard for all zinc-plated products.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can DIN 985 Class 4 nylon lock nuts be reused?\u003c\/strong\u003e\u003cbr\u003eA: They can be reused a limited number of times. For critical or safety-relevant joints, single-use is recommended as the nylon insert loses prevailing torque effectiveness after repeated cycling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between DIN 985 and DIN 982?\u003c\/strong\u003e\u003cbr\u003eA: DIN 985 is a thin (low-profile) nylon insert lock nut; DIN 982 is the full-height version. DIN 985 suits space-constrained assemblies; DIN 982 provides higher prevailing torque retention.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What bolt class should be used with Class 4 lock nuts?\u003c\/strong\u003e\u003cbr\u003eA: Class 4 nylon insert lock nuts are designed for use with Class 4.8 bolts or lower. For higher-strength bolts (8.8, 10.9), please select Class 8 or higher grade nuts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do you provide material test certificates and salt spray reports?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Material test certificates (MTC), RoHS declarations, and salt spray test reports (ISO 9227) are available upon request for all orders.\u003c\/p\u003e","products":[{"product_id":"din-985-4-m3","title":"M3-0.5 DIN 985 Class 6 Zinc Finish Steel Nylon Insert Lock Nut-48000 Pcs per Carton","description":"\u003cp\u003e22\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44506627113071,"sku":"DIN 985-4-M3","price":144.0,"currency_code":"USD","in_stock":true}]},{"product_id":"din-985-4-m4","title":"M4-0.7 DIN 985 Class 6 Zinc Finish Steel Nylon Insert Lock Nut-24000 Pcs per Carton","description":"\u003cp\u003e23\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44506627145839,"sku":"DIN 985-4-M4","price":72.0,"currency_code":"USD","in_stock":true}]},{"product_id":"din-985-4-m5","title":"M5-0.8 DIN 985 Class 6 Zinc Finish Steel Nylon Insert Lock Nut-21000 Pcs per Carton","description":"\u003cp\u003e24\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44506627178607,"sku":"DIN 985-4-M5","price":84.0,"currency_code":"USD","in_stock":true}]},{"product_id":"din-985-4-m6","title":"M6-1.0 DIN 985 Class 6 Zinc Finish Steel Nylon Insert Lock Nut-12000 Pcs per Carton","description":"\u003cp\u003e25\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44506627211375,"sku":"DIN 985-4-M6","price":60.0,"currency_code":"USD","in_stock":true}]},{"product_id":"din-985-4-m8","title":"M8-1.25 DIN 985 Class 6 Zinc Finish Steel Nylon Insert Lock Nut-4800 Pcs per Carton","description":"\u003cp\u003e26\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44506627244143,"sku":"DIN 985-4-M8","price":48.0,"currency_code":"USD","in_stock":true}]},{"product_id":"din-985-4-m10","title":"M10-1.5 DIN 985 Class 6 Zinc Finish Steel Nylon Insert Lock Nut-2400 Pcs per Carton","description":"\u003cp\u003e27\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44506627276911,"sku":"DIN 985-4-M10","price":52.8,"currency_code":"USD","in_stock":true}]},{"product_id":"din-985-4-m12","title":"M12-1.75 DIN 985 Class 6 Zinc Finish Steel Nylon Insert Lock Nut-1500 Pcs per Carton","description":"\u003cp\u003e28\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44506627309679,"sku":"DIN 985-4-M12","price":48.0,"currency_code":"USD","in_stock":true}]},{"product_id":"din-985-4-m14","title":"M14-2.0 DIN 985 Class 6 Zinc Finish Steel Nylon Insert Lock Nut-900 Pcs per Carton","description":"\u003cp\u003e29\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44506627506287,"sku":"DIN 985-4-M14","price":44.1,"currency_code":"USD","in_stock":true}]},{"product_id":"din-985-4-m16","title":"M16-2.0 DIN 985 Class 6 Zinc Finish Steel Nylon Insert Lock Nut-720 Pcs per Carton","description":"\u003cp\u003e30\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44506627539055,"sku":"DIN 985-4-M16","price":44.64,"currency_code":"USD","in_stock":true}]},{"product_id":"din-985-4-m20","title":"M20-2.5 DIN 985 Class 6 Zinc Finish Steel Nylon Insert Lock Nut-360 Pcs per Carton","description":"\u003cp\u003e31\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44506627571823,"sku":"DIN 985-4-M20","price":42.48,"currency_code":"USD","in_stock":true}]},{"product_id":"din-985-4-m24","title":"M24-3.0 DIN 985 Class 6 Zinc Finish Steel Nylon Insert Lock Nut-180 Pcs per Carton","description":"\u003cp\u003e32\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44506627637359,"sku":"DIN 985-4-M24","price":43.02,"currency_code":"USD","in_stock":true}]},{"product_id":"din-985-4-m27","title":"M27-3 DIN 985 Class 6 Zinc Finish Steel Nylon Insert Lock Nut-150 Pcs per Carton","description":"\u003cp\u003e33\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44506627670127,"sku":"DIN 985-4-M27","price":57.0,"currency_code":"USD","in_stock":true}]},{"product_id":"din-985-4-m30","title":"M30-3 DIN 985 Class 6 Zinc Finish Steel Nylon Insert Lock Nut-90 Pcs per Carton","description":"\u003cp\u003e34\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44506627702895,"sku":"DIN 985-4-M30","price":47.88,"currency_code":"USD","in_stock":true}]}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0054\/6317\/9375\/collections\/DIN_985_e32557e3-4dfd-4d61-963d-e241b262efb8.webp?v=1770510259","url":"https:\/\/www.fullerkr.com\/collections\/din985-4.oembed","provider":"Fullerkreg Fasteners","version":"1.0","type":"link"}