{"title":"Full Thread Hex Bolts (DIN 933) High Tensile Stainless Steel (A2-80)","description":"\u003ch1\u003eFull Thread Hex Bolts (DIN 933 \/ GB 5783) — Ultra-High Tensile Stainless Steel A2-80 (SUS304)\u003c\/h1\u003e\n\n\u003cp\u003eFULLERKREG DIN 933 \/ GB 5783 full thread hex bolts in A2-80 grade represent the \u003cstrong\u003ehighest strength class\u003c\/strong\u003e available in A2 stainless steel fasteners per ISO 3506-1. Manufactured from SUS304 stainless steel with a minimum tensile strength of 800 MPa, these bolts deliver exceptional clamping force and fatigue resistance while maintaining the full corrosion resistance of austenitic stainless steel. Finished with whitened passivation for maximum surface protection. The fully threaded shank ensures maximum thread engagement and grip-length flexibility for demanding structural and industrial applications.\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 A2 Stainless Steel (SUS304 \/ X 5 Cr Ni 18-10)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProperty Class \/ Strength Grade:\u003c\/strong\u003e A2-80 (Ultra-High Tensile)\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 Whitened \u0026amp; Passivated (酸洗钝化)\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 M3 – M24\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e Metric coarse thread per ISO 261 \/ DIN 13\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive:\u003c\/strong\u003e Hex wrench \/ spanner (AF across flats)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhy Choose FULLERKREG DIN 933 A2-80 Full Thread Hex Bolts?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eA2-80 — highest stainless strength class\u003c\/strong\u003e — Rm ≥ 800 MPa, the maximum grade in ISO 3506-1 for A2 stainless steel\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e60% stronger than A2-50\u003c\/strong\u003e — and 14% stronger than A2-70, enabling smaller bolt sizes for the same load\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\u003eA2 (SUS304) stainless steel\u003c\/strong\u003e — excellent corrosion resistance for marine, food, outdoor, and chemical environments\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePassivated finish\u003c\/strong\u003e — enhanced chromium oxide passive layer for long-term rust protection\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eTriple standard compliance\u003c\/strong\u003e — DIN 933 \/ GB 5783 \/ ISO 4017 for global market acceptance\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eNon-magnetic (austenitic)\u003c\/strong\u003e — suitable for sensitive electronic and MRI-adjacent environments\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eWholesale \u0026amp; bulk supply\u003c\/strong\u003e — available in large quantities for distributors, OEMs, and contractors\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eA2-80 vs. A2-70 vs. A2-50 — Strength Grade Comparison\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eProperty\u003c\/th\u003e\n      \u003cth\u003eA2-50 (Standard)\u003c\/th\u003e\n      \u003cth\u003eA2-70 (High Tensile)\u003c\/th\u003e\n      \u003cth\u003eA2-80 (Ultra-High Tensile) — This Product\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\u003e500 MPa\u003c\/td\u003e\n\u003ctd\u003e700 MPa\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e800 MPa ✅\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProof Stress (Rp0.2) min.\u003c\/td\u003e\n\u003ctd\u003e210 MPa\u003c\/td\u003e\n\u003ctd\u003e450 MPa\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e600 MPa ✅\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eElongation (A) min.\u003c\/td\u003e\n\u003ctd\u003e40%\u003c\/td\u003e\n\u003ctd\u003e20%\u003c\/td\u003e\n\u003ctd\u003e8%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHardness (HV)\u003c\/td\u003e\n\u003ctd\u003e≤ 220\u003c\/td\u003e\n\u003ctd\u003e220–250\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e250–320 ✅\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eISO 3506-1 Grade\u003c\/td\u003e\n\u003ctd\u003eA2-50\u003c\/td\u003e\n\u003ctd\u003eA2-70\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eA2-80 ✅ (Highest)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTypical Application\u003c\/td\u003e\n\u003ctd\u003eLight-duty, general use\u003c\/td\u003e\n\u003ctd\u003eStructural, high-load\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eHeavy structural, vibration-critical ✅\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\u003eFull Thread (DIN 933) vs. Partial Thread (DIN 931) — Key Differences\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eFeature\u003c\/th\u003e\n      \u003cth\u003eDIN 931 (Partial Thread)\u003c\/th\u003e\n      \u003cth\u003eDIN 933 (Full Thread) — This Product\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eThread Coverage\u003c\/td\u003e\n\u003ctd\u003ePartial — unthreaded shank section\u003c\/td\u003e\n\u003ctd\u003eFull — entire shank threaded ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGrip Length Flexibility\u003c\/td\u003e\n\u003ctd\u003eFixed by unthreaded shank\u003c\/td\u003e\n\u003ctd\u003eAdjustable — any grip length ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eThread Engagement\u003c\/td\u003e\n\u003ctd\u003eLimited to threaded portion\u003c\/td\u003e\n\u003ctd\u003eMaximum — full shank ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTypical Use\u003c\/td\u003e\n\u003ctd\u003ePrecision clearance-hole bolting\u003c\/td\u003e\n\u003ctd\u003eThrough-bolting, clamping, variable thickness ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEquivalent Standards\u003c\/td\u003e\n\u003ctd\u003eDIN 931 \/ ISO 4014\u003c\/td\u003e\n\u003ctd\u003eDIN 933 \/ ISO 4017 \/ GB 5783\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\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 strictly referenced from DIN 933 \/ ISO 4017 standard drawings.\u003c\/p\u003e\n\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\u003eM3\u003c\/td\u003e\n\u003ctd\u003e0.5\u003c\/td\u003e\n\u003ctd\u003e5.5\u003c\/td\u003e\n\u003ctd\u003e6.01\u003c\/td\u003e\n\u003ctd\u003e2.0\u003c\/td\u003e\n\u003ctd\u003e4.6\u003c\/td\u003e\n\u003ctd\u003e6 – 30\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e0.7\u003c\/td\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003e7.66\u003c\/td\u003e\n\u003ctd\u003e2.8\u003c\/td\u003e\n\u003ctd\u003e5.9\u003c\/td\u003e\n\u003ctd\u003e8 – 40\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e0.8\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e8.79\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003e6.9\u003c\/td\u003e\n\u003ctd\u003e10 – 50\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\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\u003eM14\u003c\/td\u003e\n\u003ctd\u003e2.0\u003c\/td\u003e\n\u003ctd\u003e22\u003c\/td\u003e\n\u003ctd\u003e24.49\u003c\/td\u003e\n\u003ctd\u003e8.8\u003c\/td\u003e\n\u003ctd\u003e19.6\u003c\/td\u003e\n\u003ctd\u003e30 – 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\u003eM18\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003e27\u003c\/td\u003e\n\u003ctd\u003e30.14\u003c\/td\u003e\n\u003ctd\u003e11.5\u003c\/td\u003e\n\u003ctd\u003e24.9\u003c\/td\u003e\n\u003ctd\u003e40 – 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\u003eM22\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003e34\u003c\/td\u003e\n\u003ctd\u003e37.72\u003c\/td\u003e\n\u003ctd\u003e14.0\u003c\/td\u003e\n\u003ctd\u003e31.4\u003c\/td\u003e\n\u003ctd\u003e50 – 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  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003e* s = Width across flats (A\/F); e = Width across corners (A\/C); k = Head height; d_w = Bearing surface diameter. All dimensions per DIN 933 \/ ISO 4017. For full tolerance tables, refer to the complete standard.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eStandard Length Series — Available Bolt Lengths by Size\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eThread\u003c\/th\u003e\n      \u003cth\u003eStandard Lengths Available (mm)\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003e6, 8, 10, 12, 16, 20, 25, 30\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e8, 10, 12, 16, 20, 25, 30, 35, 40\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e10, 12, 16, 20, 25, 30, 35, 40, 45, 50\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e10, 12, 16, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 80\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e16, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 80, 90, 100\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 80, 90, 100, 110, 120\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 80, 90, 100, 110, 120, 130, 140, 150\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM14\u003c\/td\u003e\n\u003ctd\u003e30, 35, 40, 45, 50, 55, 60, 65, 70, 80, 90, 100, 110, 120, 130, 140, 150\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e35, 40, 45, 50, 55, 60, 65, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 180, 200\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e45, 50, 55, 60, 65, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 180, 200\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM24\u003c\/td\u003e\n\u003ctd\u003e50, 55, 60, 65, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 180, 200\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003e* Non-standard lengths available on request. Contact FULLERKREG for custom length requirements.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eMechanical Properties — A2-80 Stainless Steel (ISO 3506-1)\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eProperty\u003c\/th\u003e\n      \u003cth\u003eA2-80 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\u003eA2-80 (per ISO 3506-1) — Highest A2 Grade\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTensile Strength (Rm) min.\u003c\/td\u003e\n\u003ctd\u003e800 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e0.2% Proof Stress (Rp0.2) min.\u003c\/td\u003e\n\u003ctd\u003e600 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eElongation (A) min.\u003c\/td\u003e\n\u003ctd\u003e8%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eReduction of Area (Z) min.\u003c\/td\u003e\n\u003ctd\u003e25%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHardness min.\u003c\/td\u003e\n\u003ctd\u003e250 HV\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHardness max.\u003c\/td\u003e\n\u003ctd\u003e320 HV\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCharpy Impact (KV)\u003c\/td\u003e\n\u003ctd\u003eNot specified (cold-worked grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAchievable by\u003c\/td\u003e\n\u003ctd\u003eCold working \/ strain hardening of A2 austenitic stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cem\u003e⚠️ Note: A2-80 strength is achieved through cold working (strain hardening) of A2 stainless steel. This process increases tensile and proof strength significantly but reduces elongation compared to A2-50 and A2-70. The material remains fully austenitic and corrosion-resistant.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eMaterial Properties — A2 Stainless Steel (SUS304)\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eProperty\u003c\/th\u003e\n      \u003cth\u003eValue\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaterial Designation\u003c\/td\u003e\n\u003ctd\u003eA2 \/ SUS304 \/ X 5 Cr Ni 18-10\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eUNS No.\u003c\/td\u003e\n\u003ctd\u003eS30400\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCorrosion Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent — suitable for marine, food \u0026amp; outdoor use\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMagnetic\u003c\/td\u003e\n\u003ctd\u003eSlightly magnetic after cold working (austenitic base)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e−50°C to +300°C (continuous)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cem\u003e⚠️ Note on magnetism: Cold-worked A2-80 stainless steel may exhibit slight magnetic response due to strain-induced martensite. This does not affect corrosion resistance. For strictly non-magnetic applications, specify annealed A2-50 or A2-70 grade.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eChemical Composition — A2 (SUS304) Stainless Steel\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eElement\u003c\/th\u003e\n      \u003cth\u003eC (%)\u003c\/th\u003e\n      \u003cth\u003eSi (%)\u003c\/th\u003e\n      \u003cth\u003eMn (%)\u003c\/th\u003e\n      \u003cth\u003eP (%)\u003c\/th\u003e\n      \u003cth\u003eS (%)\u003c\/th\u003e\n      \u003cth\u003eCr (%)\u003c\/th\u003e\n      \u003cth\u003eNi (%)\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eA2 \/ X 5 Cr Ni 18-10\u003c\/td\u003e\n      \u003ctd\u003e≤ 0.07\u003c\/td\u003e\n      \u003ctd\u003e≤ 1.0\u003c\/td\u003e\n      \u003ctd\u003e≤ 2.0\u003c\/td\u003e\n      \u003ctd\u003e≤ 0.045\u003c\/td\u003e\n      \u003ctd\u003e≤ 0.03\u003c\/td\u003e\n      \u003ctd\u003e17.0–19.5\u003c\/td\u003e\n      \u003ctd\u003e8.0–10.5\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\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, product grades A and B\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 (equivalent to DIN 933)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eISO 3506-1\u003c\/td\u003e\n\u003ctd\u003eInternational\u003c\/td\u003e\n\u003ctd\u003eMechanical properties of stainless steel fasteners — A2-80 grade definition\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eISO 261 \/ DIN 13\u003c\/td\u003e\n\u003ctd\u003eInternational\u003c\/td\u003e\n\u003ctd\u003eMetric coarse thread specification\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eTightening Torque Reference — A2-80 Stainless Steel\u003c\/h2\u003e\n\u003cp\u003eRecommended tightening torques for A2-80 stainless steel hex bolts (metric coarse thread, lubricated, μ = 0.12). Higher proof stress vs. A2-70 allows greater preload at the same torque:\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\u003eM3\u003c\/td\u003e\n\u003ctd\u003e0.6\u003c\/td\u003e\n\u003ctd\u003e1.8\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e1.5\u003c\/td\u003e\n\u003ctd\u003e3.4\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e3.0\u003c\/td\u003e\n\u003ctd\u003e5.5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e5.5\u003c\/td\u003e\n\u003ctd\u003e8.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003ctd\u003e14.5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e27\u003c\/td\u003e\n\u003ctd\u003e23.5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e47\u003c\/td\u003e\n\u003ctd\u003e34.5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM14\u003c\/td\u003e\n\u003ctd\u003e75\u003c\/td\u003e\n\u003ctd\u003e47.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e115\u003c\/td\u003e\n\u003ctd\u003e62.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e225\u003c\/td\u003e\n\u003ctd\u003e97.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM24\u003c\/td\u003e\n\u003ctd\u003e390\u003c\/td\u003e\n\u003ctd\u003e139.0\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003e* Torque values are for reference only. Actual requirements depend on friction coefficient, lubrication, joint material, and application. Always consult a qualified engineer for safety-critical applications.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eApplication Scenarios\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e🏗️ \u003cstrong\u003eHeavy structural engineering\u003c\/strong\u003e — stainless steel structural connections requiring maximum bolt strength with corrosion resistance\u003c\/li\u003e\n  \u003cli\u003e⚓ \u003cstrong\u003eMarine \u0026amp; offshore\u003c\/strong\u003e — high-load deck hardware, hull structural connections, offshore platform fittings\u003c\/li\u003e\n  \u003cli\u003e⚡ \u003cstrong\u003ePower generation \u0026amp; energy\u003c\/strong\u003e — wind turbine assemblies, solar mounting structures, transformer connections\u003c\/li\u003e\n  \u003cli\u003e🔧 \u003cstrong\u003eHeavy machinery \u0026amp; OEM\u003c\/strong\u003e — high-vibration equipment where maximum preload and fatigue resistance are critical\u003c\/li\u003e\n  \u003cli\u003e🏭 \u003cstrong\u003eChemical \u0026amp; petrochemical plants\u003c\/strong\u003e — high-pressure flange connections in corrosive process environments\u003c\/li\u003e\n  \u003cli\u003e🚂 \u003cstrong\u003eRail \u0026amp; transportation infrastructure\u003c\/strong\u003e — structural fastening requiring both high strength and corrosion resistance\u003c\/li\u003e\n  \u003cli\u003e🌊 \u003cstrong\u003eCoastal \u0026amp; port infrastructure\u003c\/strong\u003e — high-load structural connections in salt-air environments\u003c\/li\u003e\n  \u003cli\u003e🏭 \u003cstrong\u003eFood \u0026amp; pharmaceutical processing\u003c\/strong\u003e — high-load hygienic equipment assembly requiring stainless fasteners\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Gallery\u003c\/h2\u003e\n\u003cp\u003eFULLERKREG DIN 933 Full Thread Hex Bolts A2-80 Stainless Steel — 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 OEM 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 3506-1 A2-80 compliance certificates, and third-party inspection reports available on request\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustom Requirements:\u003c\/strong\u003e Non-standard lengths, special thread forms, and custom markings 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 does A2-80 mean and how is it different from A2-70?\u003c\/strong\u003e\u003cbr\u003e\nA: A2 refers to the stainless steel grade (SUS304), and 80 refers to the minimum tensile strength of 800 MPa per ISO 3506-1. A2-80 is the \u003cstrong\u003ehighest strength class\u003c\/strong\u003e for A2 stainless steel — 14% stronger than A2-70 (700 MPa) and 60% stronger than A2-50 (500 MPa). The higher strength is achieved through cold working (strain hardening).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How is A2-80 strength achieved?\u003c\/strong\u003e\u003cbr\u003e\nA: A2-80 strength is achieved through cold working (strain hardening) of the austenitic stainless steel. This process deforms the crystal structure to increase tensile and proof strength significantly, without changing the chemical composition or corrosion resistance of the material.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Will A2-80 bolts be slightly magnetic?\u003c\/strong\u003e\u003cbr\u003e\nA: Cold-worked A2-80 stainless steel may exhibit a slight magnetic response due to strain-induced martensite transformation. This does not affect corrosion resistance. For strictly non-magnetic applications, specify annealed A2-50 or A2-70 grade bolts instead.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between DIN 933 and DIN 931?\u003c\/strong\u003e\u003cbr\u003e\nA: DIN 933 (ISO 4017 \/ GB 5783) specifies \u003cstrong\u003efully threaded\u003c\/strong\u003e hex bolts — the thread runs the entire shank length. DIN 931 (ISO 4014) specifies \u003cstrong\u003epartially threaded\u003c\/strong\u003e hex bolts with an unthreaded shank section. Full thread bolts offer greater grip-length flexibility and maximum thread engagement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Are A2-80 bolts suitable for outdoor and marine use?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. A2 (SUS304) stainless steel provides excellent corrosion resistance for outdoor, coastal, and mildly marine environments. For prolonged seawater immersion or high-chloride environments, FULLERKREG recommends upgrading to A4-80 (SUS316) for superior pitting corrosion resistance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What nuts and washers are compatible?\u003c\/strong\u003e\u003cbr\u003e\nA: Use ISO 4032 \/ DIN 934 hex nuts (A2-70 or A2-80) and ISO 7089 \/ DIN 125 flat washers (A2) for a fully matched stainless steel assembly. For A2-80 bolts, ensure the nut proof load is sufficient to match the bolt strength. FULLERKREG supplies the complete range of compatible stainless fasteners.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I get material test reports (MTR)?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. FULLERKREG provides material test reports and ISO 3506-1 A2-80 compliance certificates upon request for wholesale and OEM 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 and torque requirements with a qualified 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-high-tensile-stainless-steel-a2-80.oembed","provider":"Fullerkreg Fasteners","version":"1.0","type":"link"}