{"title":"Full Thread Hex Bolts (DIN 933) - Hot Dip Galvanised High Tensile Steel (8.8)","description":"\u003ch1\u003eFull Thread Hex Bolts (DIN 933 \/ GB 5783) — Hot Dip Galvanised High Tensile Steel Grade 8.8\u003c\/h1\u003e\n\n\u003cp\u003eFULLERKREG DIN 933 \/ GB 5783 Grade 8.8 full thread hex bolts with hot dip galvanising (HDG) combine reliable structural strength with the most durable zinc corrosion protection available for carbon steel fasteners. Manufactured from 10B21 or 35K medium carbon steel and hot dip galvanised to ISO 10684 \/ ASTM A153 standards, these bolts deliver a thick, metallurgically bonded zinc coating (45–100 μm) that provides \u003cstrong\u003edecades of corrosion protection\u003c\/strong\u003e in outdoor, coastal, and aggressive industrial environments — far exceeding the performance of electroplated zinc coatings. The fully threaded shank ensures maximum thread engagement and grip-length flexibility. Compliant with DIN 933, GB 5783, and ISO 4017 standards.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e FULLERKREG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e DIN 933 \/ GB 5783 \/ ISO 4017\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 10B21 or 35K Medium Carbon Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProperty Class:\u003c\/strong\u003e Grade 8.8 (per ISO 898-1 \/ DIN EN ISO 898-1)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e Full Thread (Fully Threaded Shank)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface Treatment:\u003c\/strong\u003e Hot Dip Galvanised (HDG) — per ISO 10684 \/ ASTM A153\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZinc Coating Thickness:\u003c\/strong\u003e 45–100 μm (typical)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type:\u003c\/strong\u003e Hexagon (Hex Head)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize Range:\u003c\/strong\u003e M6 – M36\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e Metric coarse thread per ISO 261 \/ DIN 13 (re-tapped after galvanising)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKey Feature:\u003c\/strong\u003e Thick metallurgically bonded zinc coating — decades of outdoor corrosion protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhy Choose FULLERKREG DIN 933 Grade 8.8 Hot Dip Galvanised Hex Bolts?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eSuperior corrosion protection\u003c\/strong\u003e — 45–100 μm zinc coating provides decades of protection vs. 5–12 μm for electroplated zinc\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eMetallurgical bond\u003c\/strong\u003e — zinc-iron alloy layers bond to the steel substrate, providing sacrificial cathodic protection even at cut edges and damaged areas\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eSelf-healing\u003c\/strong\u003e — zinc sacrificially protects exposed steel at scratches and cut edges without requiring touch-up\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eGrade 8.8 structural strength\u003c\/strong\u003e — Rm ≥ 800 MPa; the standard structural bolt grade for steel construction worldwide\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e10B21 \/ 35K steel\u003c\/strong\u003e — boron-alloyed or medium carbon steel with excellent cold heading and hardenability characteristics\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eFull thread design\u003c\/strong\u003e — maximum thread engagement; ideal for through-bolting and variable grip-length applications\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eISO 10684 \/ ASTM A153 compliant\u003c\/strong\u003e — internationally recognized hot dip galvanising standards\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eWholesale \u0026amp; bulk supply\u003c\/strong\u003e — available in large quantities for construction, infrastructure, and industrial distributors\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eHot Dip Galvanising vs. Other Zinc Coatings — Comparison\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eProperty\u003c\/th\u003e\n      \u003cth\u003eElectroplated Zinc (CR3)\u003c\/th\u003e\n      \u003cth\u003eMechanical Zinc Plating\u003c\/th\u003e\n      \u003cth\u003eHot Dip Galvanised (HDG) — This Product\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCoating Thickness\u003c\/td\u003e\n\u003ctd\u003e5–12 μm\u003c\/td\u003e\n\u003ctd\u003e15–25 μm\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e45–100 μm ✅\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBond Type\u003c\/td\u003e\n\u003ctd\u003eElectrochemical deposit\u003c\/td\u003e\n\u003ctd\u003eMechanical impact\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eMetallurgical (Zn-Fe alloy layers) ✅\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSalt Spray Resistance\u003c\/td\u003e\n\u003ctd\u003e72–200 hours\u003c\/td\u003e\n\u003ctd\u003e200–500 hours\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e≥ 1,000–2,000+ hours ✅\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCathodic Protection\u003c\/td\u003e\n\u003ctd\u003eLimited\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eExcellent — self-healing ✅\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutdoor Service Life\u003c\/td\u003e\n\u003ctd\u003e2–5 years\u003c\/td\u003e\n\u003ctd\u003e5–10 years\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e20–50+ years ✅\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHydrogen Embrittlement Risk\u003c\/td\u003e\n\u003ctd\u003eYes (electroplating)\u003c\/td\u003e\n\u003ctd\u003eLow\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eNone (hot process) ✅\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eThread Tolerance Impact\u003c\/td\u003e\n\u003ctd\u003eMinimal\u003c\/td\u003e\n\u003ctd\u003eMinimal\u003c\/td\u003e\n\u003ctd\u003eSignificant — threads re-tapped after galvanising\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAppearance\u003c\/td\u003e\n\u003ctd\u003eBright silver\u003c\/td\u003e\n\u003ctd\u003eMatte grey\u003c\/td\u003e\n\u003ctd\u003eMatte grey \/ spangled\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTypical Application\u003c\/td\u003e\n\u003ctd\u003eIndoor \/ light outdoor\u003c\/td\u003e\n\u003ctd\u003eAutomotive, light structural\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eOutdoor structural, infrastructure ✅\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eGrade 8.8 vs. Other Property Classes\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eProperty\u003c\/th\u003e\n      \u003cth\u003eGrade 4.8\u003c\/th\u003e\n      \u003cth\u003eGrade 8.8 — This Product\u003c\/th\u003e\n      \u003cth\u003eGrade 10.9\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTensile Strength (Rm) min.\u003c\/td\u003e\n\u003ctd\u003e420 MPa\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e800 MPa ✅\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1040 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProof Load (Sp) min.\u003c\/td\u003e\n\u003ctd\u003e310 MPa\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e600 MPa ✅\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e830 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eYield Strength (Rp0.2) min.\u003c\/td\u003e\n\u003ctd\u003e340 MPa\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e640 MPa ✅\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e940 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eElongation (A) min.\u003c\/td\u003e\n\u003ctd\u003e14%\u003c\/td\u003e\n\u003ctd\u003e12%\u003c\/td\u003e\n\u003ctd\u003e9%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHardness (HRC)\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e22–32 ✅\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32–39\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTypical Use\u003c\/td\u003e\n\u003ctd\u003eLight-duty general\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard structural ✅\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-load structural\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eMechanical Properties — Grade 8.8 (ISO 898-1)\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eProperty\u003c\/th\u003e\n      \u003cth\u003eGrade 8.8 Value\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProperty Class\u003c\/td\u003e\n\u003ctd\u003e8.8 (per ISO 898-1 \/ DIN EN ISO 898-1)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTensile Strength (Rm) min.\u003c\/td\u003e\n\u003ctd\u003e800 MPa (116,000 psi)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProof Load Stress (Sp) min.\u003c\/td\u003e\n\u003ctd\u003e600 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eYield Strength (Rp0.2) min.\u003c\/td\u003e\n\u003ctd\u003e640 MPa (80% of Rm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eElongation (A) min.\u003c\/td\u003e\n\u003ctd\u003e12%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eReduction of Area (Z) min.\u003c\/td\u003e\n\u003ctd\u003e52%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHardness min.\u003c\/td\u003e\n\u003ctd\u003e22 HRC \/ 250 HV\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHardness max.\u003c\/td\u003e\n\u003ctd\u003e32 HRC \/ 320 HV\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHeat Treatment\u003c\/td\u003e\n\u003ctd\u003eQuenched \u0026amp; Tempered (Q\u0026amp;T) for d \u0026gt; M16; may be non-Q\u0026amp;T for smaller sizes\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eMaterial Properties — 10B21 \u0026amp; 35K Steel\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eProperty\u003c\/th\u003e\n      \u003cth\u003e10B21 (Boron Steel)\u003c\/th\u003e\n      \u003cth\u003e35K (Medium Carbon Steel)\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGB\/T Standard\u003c\/td\u003e\n\u003ctd\u003eGB\/T 6478 (CHQ Boron Steel)\u003c\/td\u003e\n\u003ctd\u003eGB\/T 699 (Medium Carbon Steel)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCarbon Content (C)\u003c\/td\u003e\n\u003ctd\u003e0.18–0.23%\u003c\/td\u003e\n\u003ctd\u003e0.32–0.39%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBoron (B)\u003c\/td\u003e\n\u003ctd\u003e0.0005–0.003% (key alloying element)\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eManganese (Mn)\u003c\/td\u003e\n\u003ctd\u003e0.70–1.00%\u003c\/td\u003e\n\u003ctd\u003e0.50–0.80%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHardenability\u003c\/td\u003e\n\u003ctd\u003eExcellent (boron-enhanced)\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCold Heading\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTypical Use\u003c\/td\u003e\n\u003ctd\u003eGrade 8.8 bolts M6–M36\u003c\/td\u003e\n\u003ctd\u003eGrade 8.8 bolts, general structural\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eHot Dip Galvanising Process — ISO 10684\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStep 1 — Degreasing:\u003c\/strong\u003e Alkaline cleaning to remove oils, grease, and surface contaminants.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStep 2 — Pickling:\u003c\/strong\u003e Acid bath (hydrochloric or sulfuric acid) to remove mill scale and rust, exposing clean steel surface.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStep 3 — Fluxing:\u003c\/strong\u003e Zinc ammonium chloride flux treatment to prevent oxidation before galvanising and promote zinc adhesion.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStep 4 — Hot Dip Galvanising:\u003c\/strong\u003e Immersion in molten zinc bath at approximately 450°C (842°F). Zinc-iron alloy layers form metallurgically on the steel surface.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStep 5 — Cooling \u0026amp; Inspection:\u003c\/strong\u003e Controlled cooling; visual and thickness inspection per ISO 10684.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStep 6 — Thread Re-tapping:\u003c\/strong\u003e Internal and external threads are re-tapped after galvanising to restore dimensional tolerances, as the zinc coating adds 45–100 μm per surface.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003e⚠️ Thread Note: Due to the thick zinc coating, HDG bolts require oversized nuts (also HDG) to accommodate the increased thread dimensions. Always use matching HDG nuts with HDG bolts. Standard (non-galvanised) nuts will not fit without modification.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eDimensional Specifications — DIN 933 \/ ISO 4017 Full Thread Hex Bolts\u003c\/h2\u003e\n\u003cp\u003eAll dimensions in millimeters (mm). Data per DIN 933 \/ ISO 4017 standard. Note: HDG coating adds 45–100 μm per surface — use HDG nuts with appropriate thread allowance.\u003c\/p\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eThread (d)\u003c\/th\u003e\n      \u003cth\u003ePitch (mm)\u003c\/th\u003e\n      \u003cth\u003es — A\/F (mm)\u003c\/th\u003e\n      \u003cth\u003ee — A\/C (mm)\u003c\/th\u003e\n      \u003cth\u003ek — Head Height (mm)\u003c\/th\u003e\n      \u003cth\u003ed_w min (mm)\u003c\/th\u003e\n      \u003cth\u003eLength Range (mm)\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e1.0\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e11.05\u003c\/td\u003e\n\u003ctd\u003e4.0\u003c\/td\u003e\n\u003ctd\u003e8.9\u003c\/td\u003e\n\u003ctd\u003e10 – 80\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\u003e13\u003c\/td\u003e\n\u003ctd\u003e14.38\u003c\/td\u003e\n\u003ctd\u003e5.3\u003c\/td\u003e\n\u003ctd\u003e11.6\u003c\/td\u003e\n\u003ctd\u003e16 – 100\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\u003e17\u003c\/td\u003e\n\u003ctd\u003e18.90\u003c\/td\u003e\n\u003ctd\u003e6.4\u003c\/td\u003e\n\u003ctd\u003e14.6\u003c\/td\u003e\n\u003ctd\u003e20 – 120\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\u003e19\u003c\/td\u003e\n\u003ctd\u003e21.10\u003c\/td\u003e\n\u003ctd\u003e7.5\u003c\/td\u003e\n\u003ctd\u003e16.6\u003c\/td\u003e\n\u003ctd\u003e25 – 150\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\u003e24\u003c\/td\u003e\n\u003ctd\u003e26.75\u003c\/td\u003e\n\u003ctd\u003e10.0\u003c\/td\u003e\n\u003ctd\u003e22.5\u003c\/td\u003e\n\u003ctd\u003e35 – 200\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e33.53\u003c\/td\u003e\n\u003ctd\u003e12.5\u003c\/td\u003e\n\u003ctd\u003e27.7\u003c\/td\u003e\n\u003ctd\u003e45 – 200\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM24\u003c\/td\u003e\n\u003ctd\u003e3.0\u003c\/td\u003e\n\u003ctd\u003e36\u003c\/td\u003e\n\u003ctd\u003e39.98\u003c\/td\u003e\n\u003ctd\u003e15.0\u003c\/td\u003e\n\u003ctd\u003e33.3\u003c\/td\u003e\n\u003ctd\u003e50 – 200\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM30\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003e46\u003c\/td\u003e\n\u003ctd\u003e50.85\u003c\/td\u003e\n\u003ctd\u003e18.7\u003c\/td\u003e\n\u003ctd\u003e42.8\u003c\/td\u003e\n\u003ctd\u003e60 – 200\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM36\u003c\/td\u003e\n\u003ctd\u003e4.0\u003c\/td\u003e\n\u003ctd\u003e55\u003c\/td\u003e\n\u003ctd\u003e60.79\u003c\/td\u003e\n\u003ctd\u003e22.5\u003c\/td\u003e\n\u003ctd\u003e51.1\u003c\/td\u003e\n\u003ctd\u003e70 – 200\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003e* Custom sizes and lengths available on request. Contact FULLERKREG for non-standard requirements.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eTightening Torque Reference — Grade 8.8 HDG (Lubricated, μ = 0.17–0.20)\u003c\/h2\u003e\n\u003cp\u003eNote: HDG bolts typically have higher friction coefficients than electroplated bolts due to the rougher zinc surface. Use lubrication (wax, oil, or zinc-compatible lubricant) and verify torque with a qualified engineer:\u003c\/p\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eThread\u003c\/th\u003e\n      \u003cth\u003eTorque (N·m) — 75% Proof Load\u003c\/th\u003e\n      \u003cth\u003eClamp Force (kN)\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e10.5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e20.5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e33.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e70\u003c\/td\u003e\n\u003ctd\u003e48.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e170\u003c\/td\u003e\n\u003ctd\u003e87.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e335\u003c\/td\u003e\n\u003ctd\u003e136.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM24\u003c\/td\u003e\n\u003ctd\u003e580\u003c\/td\u003e\n\u003ctd\u003e195.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM30\u003c\/td\u003e\n\u003ctd\u003e1150\u003c\/td\u003e\n\u003ctd\u003e307.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM36\u003c\/td\u003e\n\u003ctd\u003e2000\u003c\/td\u003e\n\u003ctd\u003e445.0\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003e* HDG bolts have higher friction than electroplated bolts (μ ≈ 0.17–0.20 vs. 0.12 for lubricated electroplated). Always verify torque with a qualified structural engineer. For slip-critical connections, refer to EN 1090 or AISC 360 friction-type bolt specifications.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eStandard Cross-Reference\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eStandard\u003c\/th\u003e\n      \u003cth\u003eRegion\u003c\/th\u003e\n      \u003cth\u003eDescription\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDIN 933\u003c\/td\u003e\n\u003ctd\u003eGermany \/ Europe\u003c\/td\u003e\n\u003ctd\u003eHexagon head bolts — full thread (metric)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eISO 4017\u003c\/td\u003e\n\u003ctd\u003eInternational\u003c\/td\u003e\n\u003ctd\u003eHexagon head screws — full thread\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGB 5783\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003ctd\u003eHexagon head bolts — full thread\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eISO 898-1\u003c\/td\u003e\n\u003ctd\u003eInternational\u003c\/td\u003e\n\u003ctd\u003eMechanical properties — Grade 8.8 definition\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eISO 10684\u003c\/td\u003e\n\u003ctd\u003eInternational\u003c\/td\u003e\n\u003ctd\u003eFasteners — hot dip galvanised coatings specification\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eASTM A153\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003ctd\u003eZinc coating (hot dip) on iron and steel hardware\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEN ISO 1461\u003c\/td\u003e\n\u003ctd\u003eEurope\u003c\/td\u003e\n\u003ctd\u003eHot dip galvanised coatings on fabricated iron and steel articles\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eApplication Scenarios\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e🏗️ \u003cstrong\u003eStructural steel construction\u003c\/strong\u003e — steel frame buildings, bridges, industrial structures, and infrastructure requiring long-term outdoor corrosion protection\u003c\/li\u003e\n  \u003cli\u003e🌉 \u003cstrong\u003eBridges \u0026amp; civil engineering\u003c\/strong\u003e — highway bridges, pedestrian bridges, retaining walls, and civil infrastructure in exposed environments\u003c\/li\u003e\n  \u003cli\u003e⚡ \u003cstrong\u003ePower transmission \u0026amp; utilities\u003c\/strong\u003e — transmission towers, substation structures, utility poles, and solar mounting systems\u003c\/li\u003e\n  \u003cli\u003e🌿 \u003cstrong\u003eAgricultural \u0026amp; rural infrastructure\u003c\/strong\u003e — farm buildings, grain silos, irrigation structures, and rural fencing in corrosive soil environments\u003c\/li\u003e\n  \u003cli\u003e⚓ \u003cstrong\u003eMarine \u0026amp; coastal structures\u003c\/strong\u003e — jetties, pontoons, boat ramps, and coastal infrastructure in salt-air environments\u003c\/li\u003e\n  \u003cli\u003e🚧 \u003cstrong\u003eRoad \u0026amp; highway infrastructure\u003c\/strong\u003e — guardrails, signage structures, noise barriers, and road furniture\u003c\/li\u003e\n  \u003cli\u003e🏭 \u003cstrong\u003eIndustrial plant \u0026amp; mining\u003c\/strong\u003e — outdoor equipment structures, conveyor frames, and plant infrastructure in aggressive industrial atmospheres\u003c\/li\u003e\n  \u003cli\u003e🏠 \u003cstrong\u003eResidential \u0026amp; commercial construction\u003c\/strong\u003e — timber frame connections, decking, pergolas, and outdoor structural fastening\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Gallery\u003c\/h2\u003e\n\u003cp\u003eFULLERKREG DIN 933 Grade 8.8 Hot Dip Galvanised Full Thread Hex Bolts — actual product photos:\u003c\/p\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:25%; text-align:center; padding:12px;\"\u003e[Product Photo 1]\u003c\/td\u003e\n      \u003ctd style=\"width:25%; text-align:center; padding:12px;\"\u003e[Product Photo 2]\u003c\/td\u003e\n      \u003ctd style=\"width:25%; text-align:center; padding:12px;\"\u003e[Product Photo 3]\u003c\/td\u003e\n      \u003ctd style=\"width:25%; text-align:center; padding:12px;\"\u003e[Product Photo 4]\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eOrdering \u0026amp; Packaging Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Bulk carton \/ polybag per size and length; custom labeling available for construction and distributor orders\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMOQ:\u003c\/strong\u003e Contact FULLERKREG sales for wholesale minimum order quantities\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLead Time:\u003c\/strong\u003e Standard stock sizes ship promptly; large-volume orders subject to production schedule\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e Material test reports (MTR), ISO 898-1 Grade 8.8 certificates, ISO 10684 HDG coating inspection reports available on request\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatching Hardware:\u003c\/strong\u003e HDG hex nuts (DIN 934 \/ ISO 4032) and HDG flat washers (DIN 125 \/ ISO 7089) available — always use matching HDG nuts with HDG bolts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustom Requirements:\u003c\/strong\u003e Non-standard sizes, lengths, and thread forms available — contact us\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is hot dip galvanising and how does it differ from electroplated zinc?\u003c\/strong\u003e\u003cbr\u003e\nA: Hot dip galvanising (HDG) involves immersing steel fasteners in molten zinc at ~450°C, forming a metallurgically bonded zinc-iron alloy coating 45–100 μm thick. Electroplated zinc deposits a thin (5–12 μm) zinc layer electrochemically. HDG provides 5–10× more zinc thickness, a metallurgical bond (not just adhesion), and self-healing cathodic protection — resulting in 20–50+ years of outdoor service life vs. 2–5 years for electroplated zinc.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Why do HDG bolts need special nuts?\u003c\/strong\u003e\u003cbr\u003e\nA: The thick zinc coating (45–100 μm per surface) significantly increases the effective thread diameter of HDG bolts. Standard nuts will not fit. HDG bolts must be used with matching HDG nuts that have been manufactured with an oversized thread allowance to accommodate the zinc coating. FULLERKREG supplies matching HDG nuts and washers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is 10B21 steel and why is it used for Grade 8.8 bolts?\u003c\/strong\u003e\u003cbr\u003e\nA: 10B21 is a boron-alloyed cold heading quality (CHQ) steel per GB\/T 6478. The boron addition (0.0005–0.003%) dramatically improves hardenability — allowing the steel to through-harden to Grade 8.8 mechanical properties even in larger diameters, using less alloying than conventional carbon steels. This makes it the preferred material for cost-effective Grade 8.8 bolt production.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Are HDG bolts suitable for structural applications per EN 1090?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. HDG Grade 8.8 bolts per ISO 10684 are widely used in structural steel construction per EN 1090 (European execution standard for steel structures). For slip-critical (friction-type) connections, verify the friction coefficient of the HDG surface with your structural engineer, as HDG surfaces have different slip factors than other finishes.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can HDG bolts be used in contact with stainless steel or aluminium?\u003c\/strong\u003e\u003cbr\u003e\nA: Galvanic corrosion may occur when HDG (zinc-coated) steel contacts dissimilar metals in the presence of an electrolyte. In contact with stainless steel, zinc will corrode preferentially (sacrificially) — this may be acceptable or unacceptable depending on the application. In contact with aluminium, the galvanic potential difference is smaller. Consult a corrosion engineer for mixed-metal joint design.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the service life of HDG bolts outdoors?\u003c\/strong\u003e\u003cbr\u003e\nA: Service life depends on the environment. In rural\/suburban atmospheres, HDG bolts typically last 40–70+ years. In industrial or coastal atmospheres, service life is 20–40 years. In aggressive marine or chemical environments, additional protection (paint, sealant) may be required. ISO 14713 provides guidance on expected service life by environment.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I get ISO 10684 coating inspection reports?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. FULLERKREG provides ISO 10684 HDG coating thickness inspection reports and ISO 898-1 Grade 8.8 mechanical property certificates upon request for wholesale and construction project orders.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003cp\u003e\u003cem\u003eFULLERKREG — Precision Fasteners to ISO\/DIN\/GB Standards. All technical data is provided for reference. Always verify fastener selection, torque requirements, and galvanic compatibility with a qualified structural engineer for structural and safety-critical applications.\u003c\/em\u003e\u003c\/p\u003e","products":[],"url":"https:\/\/www.fullerkr.com\/collections\/full-thread-hex-bolts-din-933-hot-dip-galvanised-high-tensile-steel-8-8.oembed","provider":"Fullerkreg Fasteners","version":"1.0","type":"link"}