{"title":"Chamfered Square Nuts (DIN 557) - Stainless Steel (A2)","description":"\u003ch1\u003eChamfered Square Nuts (DIN 557) — Stainless Steel A2 (SUS304)\u003c\/h1\u003e\n\n\u003cp\u003eFULLERKREG DIN 557 chamfered square nuts are manufactured from austenitic stainless steel grade A2 (SUS304), offering excellent corrosion resistance and mechanical strength. The chamfered top face provides a clean, professional appearance and facilitates easy assembly. Ideal for structural, mechanical, and industrial fastening applications where corrosion resistance is critical.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%;text-align:center;\"\u003e\n  \u003cthead style=\"background-color:#f2f2f2;\"\u003e\n    \u003ctr\u003e\n      \u003cth\u003eProperty\u003c\/th\u003e\n      \u003cth\u003eDetails\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eDIN 557\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eChamfered Square Nut\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eStainless Steel SUS304 (A2)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSurface Treatment\u003c\/td\u003e\n\u003ctd\u003ePickled \u0026amp; Passivated (Bright Finish)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eThread Type\u003c\/td\u003e\n\u003ctd\u003eMetric Coarse Thread (ISO 68-1)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSize Range\u003c\/td\u003e\n\u003ctd\u003eM5 – M16\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRoHS Compliant\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMagnetic Properties\u003c\/td\u003e\n\u003ctd\u003eSlightly magnetic (inherent to austenitic SS after cold working)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eDimensional Data (DIN 557 · Unit: mm)\u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%;text-align:center;\"\u003e\n  \u003cthead style=\"background-color:#f2f2f2;\"\u003e\n    \u003ctr\u003e\n      \u003cth rowspan=\"2\"\u003eThread Size\u003cbr\u003ed\u003c\/th\u003e\n      \u003cth rowspan=\"2\"\u003ePitch\u003cbr\u003e(mm)\u003c\/th\u003e\n      \u003cth colspan=\"2\"\u003eNut Height m (mm)\u003c\/th\u003e\n      \u003cth rowspan=\"2\"\u003eMin Wrenching\u003cbr\u003emw (mm)\u003c\/th\u003e\n      \u003cth colspan=\"2\"\u003eAcross Flats s (mm)\u003c\/th\u003e\n      \u003cth colspan=\"2\"\u003eAcross Corners e (mm)\u003c\/th\u003e\n      \u003cth rowspan=\"2\"\u003eBearing Dia.\u003cbr\u003edw min (mm)\u003c\/th\u003e\n      \u003cth rowspan=\"2\"\u003eEst. Unit Weight\u003cbr\u003e(g\/pc)\u003c\/th\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth\u003emax\u003c\/th\u003e\n      \u003cth\u003emin\u003c\/th\u003e\n      \u003cth\u003emax\u003c\/th\u003e\n      \u003cth\u003emin\u003c\/th\u003e\n      \u003cth\u003emax\u003c\/th\u003e\n      \u003cth\u003emin\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e0.8\u003c\/td\u003e\n\u003ctd\u003e4.00\u003c\/td\u003e\n\u003ctd\u003e3.52\u003c\/td\u003e\n\u003ctd\u003e2.50\u003c\/td\u003e\n\u003ctd\u003e8.00\u003c\/td\u003e\n\u003ctd\u003e7.64\u003c\/td\u003e\n\u003ctd\u003e11.30\u003c\/td\u003e\n\u003ctd\u003e9.93\u003c\/td\u003e\n\u003ctd\u003e6.70\u003c\/td\u003e\n\u003ctd\u003e~1.5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e1.0\u003c\/td\u003e\n\u003ctd\u003e5.00\u003c\/td\u003e\n\u003ctd\u003e4.52\u003c\/td\u003e\n\u003ctd\u003e3.20\u003c\/td\u003e\n\u003ctd\u003e10.00\u003c\/td\u003e\n\u003ctd\u003e9.64\u003c\/td\u003e\n\u003ctd\u003e14.10\u003c\/td\u003e\n\u003ctd\u003e12.53\u003c\/td\u003e\n\u003ctd\u003e8.70\u003c\/td\u003e\n\u003ctd\u003e~2.8\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e1.25\u003c\/td\u003e\n\u003ctd\u003e6.50\u003c\/td\u003e\n\u003ctd\u003e5.92\u003c\/td\u003e\n\u003ctd\u003e4.10\u003c\/td\u003e\n\u003ctd\u003e13.00\u003c\/td\u003e\n\u003ctd\u003e12.57\u003c\/td\u003e\n\u003ctd\u003e18.40\u003c\/td\u003e\n\u003ctd\u003e16.34\u003c\/td\u003e\n\u003ctd\u003e11.50\u003c\/td\u003e\n\u003ctd\u003e~6.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e1.5\u003c\/td\u003e\n\u003ctd\u003e8.00\u003c\/td\u003e\n\u003ctd\u003e7.42\u003c\/td\u003e\n\u003ctd\u003e5.20\u003c\/td\u003e\n\u003ctd\u003e17.00\u003c\/td\u003e\n\u003ctd\u003e16.57\u003c\/td\u003e\n\u003ctd\u003e24.00\u003c\/td\u003e\n\u003ctd\u003e21.54\u003c\/td\u003e\n\u003ctd\u003e14.50\u003c\/td\u003e\n\u003ctd\u003e~11.5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e1.75\u003c\/td\u003e\n\u003ctd\u003e10.00\u003c\/td\u003e\n\u003ctd\u003e9.42\u003c\/td\u003e\n\u003ctd\u003e6.60\u003c\/td\u003e\n\u003ctd\u003e19.00\u003c\/td\u003e\n\u003ctd\u003e18.57\u003c\/td\u003e\n\u003ctd\u003e26.90\u003c\/td\u003e\n\u003ctd\u003e24.02\u003c\/td\u003e\n\u003ctd\u003e16.50\u003c\/td\u003e\n\u003ctd\u003e~17.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e2.0\u003c\/td\u003e\n\u003ctd\u003e13.00\u003c\/td\u003e\n\u003ctd\u003e12.30\u003c\/td\u003e\n\u003ctd\u003e8.60\u003c\/td\u003e\n\u003ctd\u003e24.00\u003c\/td\u003e\n\u003ctd\u003e23.16\u003c\/td\u003e\n\u003ctd\u003e33.90\u003c\/td\u003e\n\u003ctd\u003e30.11\u003c\/td\u003e\n\u003ctd\u003e22.00\u003c\/td\u003e\n\u003ctd\u003e~38.0\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size:0.85em;color:#666;\"\u003e* Dimensions per DIN 557. Unit weight values are approximate references for SUS304 material density (7.93 g\/cm³). Actual weight may vary slightly by batch. Data is strictly informative.\u003c\/p\u003e\n\n\u003ch2\u003eSelection Guide\u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%;text-align:center;\"\u003e\n  \u003cthead style=\"background-color:#f2f2f2;\"\u003e\n    \u003ctr\u003e\n      \u003cth\u003eApplication Scenario\u003c\/th\u003e\n      \u003cth\u003eRecommended Size\u003c\/th\u003e\n      \u003cth\u003eReason\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLight-duty electronics \/ instrument panels\u003c\/td\u003e\n\u003ctd\u003eM5 – M6\u003c\/td\u003e\n\u003ctd\u003eCompact profile, easy torque control\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGeneral mechanical assemblies\u003c\/td\u003e\n\u003ctd\u003eM8 – M10\u003c\/td\u003e\n\u003ctd\u003eBalanced strength and wrench clearance\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eStructural \/ heavy-duty industrial\u003c\/td\u003e\n\u003ctd\u003eM12 – M16\u003c\/td\u003e\n\u003ctd\u003eHigh clamping force, wide bearing surface\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutdoor \/ marine \/ food-grade environments\u003c\/td\u003e\n\u003ctd\u003eAll sizes\u003c\/td\u003e\n\u003ctd\u003eA2 SUS304 corrosion resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eT-slot \/ channel framing systems\u003c\/td\u003e\n\u003ctd\u003eM8 – M12\u003c\/td\u003e\n\u003ctd\u003eSquare profile locks into slot without rotation\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\u003eDIN 557 specifies chamfered square nuts with metric coarse threads. The standard defines geometry, tolerances, and mechanical requirements. FULLERKREG DIN 557 A2 nuts comply with:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIN 557\u003c\/strong\u003e — Chamfered Square Nuts (superseded in part by ISO 4032 for hex nuts, but DIN 557 square nut geometry remains the industry reference)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO 3506-2\u003c\/strong\u003e — Mechanical properties of stainless steel nuts (Property Class A2-70)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO 68-1\u003c\/strong\u003e — Metric screw thread profile\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRoHS Directive\u003c\/strong\u003e — Restriction of Hazardous Substances compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eMaterial \u0026amp; Surface\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Austenitic Stainless Steel SUS304 \/ AISI 304 \/ EN 1.4301 (A2)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface:\u003c\/strong\u003e Pickled \u0026amp; Passivated — bright, oxide-free finish that maximizes corrosion resistance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTensile Strength:\u003c\/strong\u003e ≥ 500 MPa (A2-50) \/ ≥ 700 MPa (A2-70)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProof Load Stress:\u003c\/strong\u003e Per ISO 3506-2 Annex F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e All austenitic stainless steel fasteners may exhibit slight magnetic properties due to cold working during manufacturing. This does not affect corrosion resistance or mechanical performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProduct Gallery\u003c\/h2\u003e\n\u003ctable border=\"0\" cellpadding=\"8\" cellspacing=\"0\" style=\"width:100%;text-align:center;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:25%;vertical-align:top;border:1px solid #e0e0e0;padding:12px;\"\u003e[Product Image 1]\u003c\/td\u003e\n      \u003ctd style=\"width:25%;vertical-align:top;border:1px solid #e0e0e0;padding:12px;\"\u003e[Product Image 2]\u003c\/td\u003e\n      \u003ctd style=\"width:25%;vertical-align:top;border:1px solid #e0e0e0;padding:12px;\"\u003e[Product Image 3]\u003c\/td\u003e\n      \u003ctd style=\"width:25%;vertical-align:top;border:1px solid #e0e0e0;padding:12px;\"\u003e[Product Image 4]\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhy FULLERKREG\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e🏭 \u003cstrong\u003eDirect Manufacturer\u003c\/strong\u003e — Factory-direct pricing with full traceability from raw material to finished fastener\u003c\/li\u003e\n  \u003cli\u003e📐 \u003cstrong\u003ePrecision Conformance\u003c\/strong\u003e — Strict dimensional inspection per DIN 557; CMM-verified critical dimensions\u003c\/li\u003e\n  \u003cli\u003e🔬 \u003cstrong\u003eMaterial Certification\u003c\/strong\u003e — Mill test reports (MTR) and RoHS certificates available on request\u003c\/li\u003e\n  \u003cli\u003e📦 \u003cstrong\u003eFlexible MOQ\u003c\/strong\u003e — Bulk pallet quantities or sample packs; custom packaging available\u003c\/li\u003e\n  \u003cli\u003e🌍 \u003cstrong\u003eGlobal Shipping\u003c\/strong\u003e — Export experience to 50+ countries; sea, air, and express logistics supported\u003c\/li\u003e\n  \u003cli\u003e⚡ \u003cstrong\u003eFast Lead Time\u003c\/strong\u003e — In-stock standard sizes ship within 3–5 business days\u003c\/li\u003e\n  \u003cli\u003e🤝 \u003cstrong\u003eB2B Wholesale\u003c\/strong\u003e — Volume pricing tiers, OEM labeling, and long-term supply agreements available\u003c\/li\u003e\n\u003c\/ul\u003e","products":[{"product_id":"din-557-a2-m3","title":"M3-0.5 Chamfered Square Nuts (DIN 557) - Stainless Steel (A2)-50000 Pcs per Carton","description":"\u003cp\u003e12\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44514763931759,"sku":"DIN 557-A2-M3","price":400.0,"currency_code":"USD","in_stock":true}]},{"product_id":"din-557-a2-m4","title":"M4-0.7 Chamfered Square Nuts (DIN 557) - Stainless Steel (A2)-30000 Pcs per Carton","description":"\u003cp\u003e13\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44514763964527,"sku":"DIN 557-A2-M4","price":270.0,"currency_code":"USD","in_stock":true}]},{"product_id":"din-557-a2-m5","title":"M5-0.8 Chamfered Square Nuts (DIN 557) - Stainless Steel (A2)-20000 Pcs per Carton","description":"\u003cp\u003e14\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44514763997295,"sku":"DIN 557-A2-M5","price":240.0,"currency_code":"USD","in_stock":true}]},{"product_id":"din-557-a2-m6","title":"M6-1.0 Chamfered Square Nuts (DIN 557) - Stainless Steel (A2)-10000 Pcs per Carton","description":"\u003cp\u003e15\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44514764030063,"sku":"DIN 557-A2-M6","price":210.0,"currency_code":"USD","in_stock":true}]},{"product_id":"din-557-a2-m8","title":"M8-1.25 Chamfered Square Nuts (DIN 557) - Stainless Steel (A2)-4500 Pcs per Carton","description":"\u003cp\u003e16\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44514764062831,"sku":"DIN 557-A2-M8","price":198.0,"currency_code":"USD","in_stock":true}]},{"product_id":"din-557-a2-m10","title":"M10-1.5 Chamfered Square Nuts (DIN 557) - Stainless Steel (A2)-2500 Pcs per Carton","description":"\u003cp\u003e17\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44514764095599,"sku":"DIN 557-A2-M10","price":220.0,"currency_code":"USD","in_stock":true}]},{"product_id":"din-557-a2-m12","title":"M12-1.75 Chamfered Square Nuts (DIN 557) - Stainless Steel (A2)-1300 Pcs per Carton","description":"\u003cp\u003e18\u003c\/p\u003e","brand":"Fullerkreg Fasteners","offers":[{"title":"Default Title","offer_id":44514764128367,"sku":"DIN 557-A2-M12","price":197.6,"currency_code":"USD","in_stock":true}]}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0054\/6317\/9375\/collections\/DIN_557_b7702a46-28fe-4a73-bd42-7d0056916f21.webp?v=1770529350","url":"https:\/\/www.fullerkr.com\/collections\/din557-a2.oembed","provider":"Fullerkreg Fasteners","version":"1.0","type":"link"}