{"title":"Eye Bolts (DIN 444 Type B) - Marine Stainless Steel (A4)","description":"\u003ch1\u003eEye Bolts (DIN 444 Type B) — Marine Stainless Steel A4 (SUS316)\u003c\/h1\u003e\n\n\u003cp\u003eFULLERKREG DIN 444 Type B eye bolts in A4 marine stainless steel (SUS316) represent the premium choice for lifting and rigging in the most demanding corrosive environments. Manufactured by hot forging followed by precision CNC machining, then finished with whitened passivation, these eye bolts combine the structural integrity of a forged closed-ring eye with the superior chloride and seawater resistance of molybdenum-enhanced A4 stainless steel. The long shank (Type B) ensures deep thread engagement for secure, vibration-resistant fastening through thick materials.\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\u003eStandard:\u003c\/strong\u003e DIN 444 Type B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e A4 Marine Stainless Steel (SUS316 \/ X 2 Cr Ni Mo 17-12-2)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturing Process:\u003c\/strong\u003e Forged + Precision Machined (Turned)\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\u003eProperty Class:\u003c\/strong\u003e A4-70 (Marine Grade Stainless)\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 DIN 13\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKey Feature:\u003c\/strong\u003e Long shank (Type B) + Closed ring eye + Mo-enhanced corrosion resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhy Choose FULLERKREG DIN 444 Type B A4 Marine Eye Bolts?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eA4 (SUS316) marine grade\u003c\/strong\u003e — molybdenum-enhanced alloy for superior chloride, seawater, and pitting corrosion resistance vs. A2\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eForged + precision machined\u003c\/strong\u003e — superior dimensional accuracy and surface finish; tight tolerances for consistent load distribution\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eLong shank (Type B)\u003c\/strong\u003e — deeper thread engagement for secure, vibration-resistant fastening in thick materials\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eClosed ring eye\u003c\/strong\u003e — prevents hook disengagement; safer than open-eye designs in dynamic lifting\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePassivated finish\u003c\/strong\u003e — enhanced chromium-molybdenum oxide passive layer for maximum long-term corrosion protection\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eNon-magnetic (austenitic)\u003c\/strong\u003e — ideal for sensitive electronic, MRI-adjacent, and food-processing environments\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eDIN 444 compliant\u003c\/strong\u003e — internationally recognized standard for precision eye bolt applications\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eWholesale \u0026amp; bulk supply\u003c\/strong\u003e — available in large quantities for shipyards, distributors, and OEMs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eDIN 444 Type A vs. Type B — What Is the Difference?\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eFeature\u003c\/th\u003e\n      \u003cth\u003eDIN 444 Type A (Short Shank)\u003c\/th\u003e\n      \u003cth\u003eDIN 444 Type B (Long Shank) — This Product\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eShank Length\u003c\/td\u003e\n\u003ctd\u003eShort (standard engagement)\u003c\/td\u003e\n\u003ctd\u003eLong (extended engagement) ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eThread Engagement\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eDeeper — more secure in thick materials ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eVibration Resistance\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eEnhanced ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTypical Use\u003c\/td\u003e\n\u003ctd\u003eGeneral light-duty lifting\u003c\/td\u003e\n\u003ctd\u003eHeavy-duty, vibration-prone, thick-plate applications ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEye Shape\u003c\/td\u003e\n\u003ctd\u003eClosed ring\u003c\/td\u003e\n\u003ctd\u003eClosed ring\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eA4 vs. A2 — Why Marine Grade Matters\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eProperty\u003c\/th\u003e\n      \u003cth\u003eA2 (SUS304)\u003c\/th\u003e\n      \u003cth\u003eA4 (SUS316) — This Product\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMolybdenum Content\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003e2.0–2.5% ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSeawater Resistance\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003ctd\u003eExcellent ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePitting Corrosion Resistance\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eSuperior ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCrevice Corrosion Resistance\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003ctd\u003eSuperior ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChemical \/ Acid Resistance\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eExcellent ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRecommended for Marine Use\u003c\/td\u003e\n\u003ctd\u003eLimited\u003c\/td\u003e\n\u003ctd\u003eYes ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFood \u0026amp; Pharma Grade\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eDIN 444 Type B vs. DIN 580 — Key Differences\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eFeature\u003c\/th\u003e\n      \u003cth\u003eDIN 580 (Lifting Eye Bolt)\u003c\/th\u003e\n      \u003cth\u003eDIN 444 Type B — This Product\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 580 \/ ISO 3266\u003c\/td\u003e\n\u003ctd\u003eDIN 444\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEye Shape\u003c\/td\u003e\n\u003ctd\u003eOpen ring (forged loop)\u003c\/td\u003e\n\u003ctd\u003eClosed ring (solid eye) ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eShank Length\u003c\/td\u003e\n\u003ctd\u003eShort\u003c\/td\u003e\n\u003ctd\u003eLong (Type B) ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eManufacturing\u003c\/td\u003e\n\u003ctd\u003eForged\u003c\/td\u003e\n\u003ctd\u003eForged + Precision Machined ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensional Precision\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eHigher (machined finish) ✅\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTypical Application\u003c\/td\u003e\n\u003ctd\u003eGeneral lifting \u0026amp; rigging\u003c\/td\u003e\n\u003ctd\u003ePrecision machinery, marine, heavy-duty attachment\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 444 Type B Eye Bolts\u003c\/h2\u003e\n\u003cp\u003eAll dimensions in millimeters (mm). Data strictly referenced from DIN 444 standard drawings. WLL values are for axial (vertical) loading only.\u003c\/p\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eThread (d)\u003c\/th\u003e\n      \u003cth\u003ed2 (mm)\u003c\/th\u003e\n      \u003cth\u003ed3 (mm)\u003c\/th\u003e\n      \u003cth\u003eD (mm)\u003c\/th\u003e\n      \u003cth\u003eb (mm)\u003c\/th\u003e\n      \u003cth\u003ee (mm)\u003c\/th\u003e\n      \u003cth\u003eh (mm)\u003c\/th\u003e\n      \u003cth\u003el1 (mm)\u003c\/th\u003e\n      \u003cth\u003el2 (mm)\u003c\/th\u003e\n      \u003cth\u003er (mm)\u003c\/th\u003e\n      \u003cth\u003er1 (mm)\u003c\/th\u003e\n      \u003cth\u003es (mm)\u003c\/th\u003e\n      \u003cth\u003eWLL (kg)\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\u003e11\u003c\/td\u003e\n\u003ctd\u003e6.4\u003c\/td\u003e\n\u003ctd\u003e22\u003c\/td\u003e\n\u003ctd\u003e9\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003ctd\u003e36\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003ctd\u003e8.4\u003c\/td\u003e\n\u003ctd\u003e28\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e45\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e200\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e17\u003c\/td\u003e\n\u003ctd\u003e10.5\u003c\/td\u003e\n\u003ctd\u003e34\u003c\/td\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003ctd\u003e22\u003c\/td\u003e\n\u003ctd\u003e17\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e55\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e320\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e12.5\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e26\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e65\u003c\/td\u003e\n\u003ctd\u003e9\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003e500\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e26\u003c\/td\u003e\n\u003ctd\u003e16.5\u003c\/td\u003e\n\u003ctd\u003e52\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003ctd\u003e34\u003c\/td\u003e\n\u003ctd\u003e26\u003c\/td\u003e\n\u003ctd\u003e38\u003c\/td\u003e\n\u003ctd\u003e85\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e9\u003c\/td\u003e\n\u003ctd\u003e900\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e32\u003c\/td\u003e\n\u003ctd\u003e20.5\u003c\/td\u003e\n\u003ctd\u003e64\u003c\/td\u003e\n\u003ctd\u003e23\u003c\/td\u003e\n\u003ctd\u003e42\u003c\/td\u003e\n\u003ctd\u003e32\u003c\/td\u003e\n\u003ctd\u003e46\u003c\/td\u003e\n\u003ctd\u003e105\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e1400\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM24\u003c\/td\u003e\n\u003ctd\u003e38\u003c\/td\u003e\n\u003ctd\u003e24.5\u003c\/td\u003e\n\u003ctd\u003e76\u003c\/td\u003e\n\u003ctd\u003e27\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e38\u003c\/td\u003e\n\u003ctd\u003e54\u003c\/td\u003e\n\u003ctd\u003e125\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003ctd\u003e2000\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM30\u003c\/td\u003e\n\u003ctd\u003e46\u003c\/td\u003e\n\u003ctd\u003e30.5\u003c\/td\u003e\n\u003ctd\u003e92\u003c\/td\u003e\n\u003ctd\u003e33\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e46\u003c\/td\u003e\n\u003ctd\u003e66\u003c\/td\u003e\n\u003ctd\u003e155\u003c\/td\u003e\n\u003ctd\u003e22\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003ctd\u003e3200\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM36\u003c\/td\u003e\n\u003ctd\u003e55\u003c\/td\u003e\n\u003ctd\u003e36.5\u003c\/td\u003e\n\u003ctd\u003e110\u003c\/td\u003e\n\u003ctd\u003e39\u003c\/td\u003e\n\u003ctd\u003e72\u003c\/td\u003e\n\u003ctd\u003e55\u003c\/td\u003e\n\u003ctd\u003e78\u003c\/td\u003e\n\u003ctd\u003e185\u003c\/td\u003e\n\u003ctd\u003e27\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003ctd\u003e5000\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cem\u003e* WLL values are for axial (vertical) loading only. Always verify load ratings with a qualified engineer before use in safety-critical applications. Dimensions are nominal; refer to the full DIN 444 standard for tolerances.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eMaterial \u0026amp; Mechanical Properties — A4 Marine Stainless Steel (SUS316)\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\u003eA4 \/ SUS316 \/ X 2 Cr Ni Mo 17-12-2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eUNS No.\u003c\/td\u003e\n\u003ctd\u003eS31600\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProperty Class\u003c\/td\u003e\n\u003ctd\u003eA4-70\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTensile Strength (Rm)\u003c\/td\u003e\n\u003ctd\u003e≥ 700 MPa (A4-70)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eYield Strength (Rp0.2)\u003c\/td\u003e\n\u003ctd\u003e≥ 450 MPa (A4-70)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eElongation (A5)\u003c\/td\u003e\n\u003ctd\u003e≥ 20%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003e≤ 250 HV\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCorrosion Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent — superior to A2 in chloride \u0026amp; marine environments\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMagnetic\u003c\/td\u003e\n\u003ctd\u003eNon-magnetic (austenitic)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eKey Advantage vs. A2\u003c\/td\u003e\n\u003ctd\u003eMolybdenum (Mo) addition — enhanced pitting \u0026amp; crevice corrosion resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eChemical Composition — A4 (SUS316) Marine 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      \u003cth\u003eMo (%)\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eA4 \/ X 2 Cr Ni Mo 17-12-2\u003c\/td\u003e\n      \u003ctd\u003e≤ 0.03\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\u003e16.5–18.5\u003c\/td\u003e\n      \u003ctd\u003e10.0–13.0\u003c\/td\u003e\n      \u003ctd\u003e2.0–2.5\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eThe addition of Molybdenum (Mo 2.0–2.5%) is the defining characteristic of A4\/316 stainless steel, providing significantly enhanced resistance to pitting corrosion in chloride-rich environments such as seawater, de-icing salts, and industrial chemicals.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eManufacturing Process — Forged + Precision Machined\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStep 1 — Hot Forging:\u003c\/strong\u003e Billets of A4 (SUS316) stainless steel are hot-forged to shape the closed ring eye and shank, aligning the grain structure for maximum strength and fatigue resistance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStep 2 — Precision Machining (Turning):\u003c\/strong\u003e The forged blank is CNC-turned to achieve tight dimensional tolerances on the shank diameter, bearing surfaces, and eye geometry — ensuring consistent fit and load distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStep 3 — Thread Rolling \/ Cutting:\u003c\/strong\u003e Metric coarse threads are formed to DIN 13 specification for precise engagement with standard metric tapped holes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStep 4 — Whitening \u0026amp; Passivation:\u003c\/strong\u003e Acid washing removes surface contamination and free iron; passivation enhances the natural chromium-molybdenum oxide layer for superior corrosion resistance in marine environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStep 5 — Inspection:\u003c\/strong\u003e Dimensional and visual inspection per DIN 444 requirements before packaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eApplication Scenarios\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e⚓ \u003cstrong\u003eMarine \u0026amp; offshore\u003c\/strong\u003e — deck fittings, anchor points, mooring equipment, subsea rigging in seawater environments\u003c\/li\u003e\n  \u003cli\u003e🏗️ \u003cstrong\u003eShipbuilding \u0026amp; shipyards\u003c\/strong\u003e — hull assembly, engine lifting, structural rigging in salt-air environments\u003c\/li\u003e\n  \u003cli\u003e🌊 \u003cstrong\u003eCoastal \u0026amp; port infrastructure\u003c\/strong\u003e — jetties, pontoons, harbour equipment exposed to seawater spray\u003c\/li\u003e\n  \u003cli\u003e🏭 \u003cstrong\u003eFood, beverage \u0026amp; pharmaceutical\u003c\/strong\u003e — hygienic lifting in wash-down environments requiring non-magnetic, high-purity stainless\u003c\/li\u003e\n  \u003cli\u003e🏭 \u003cstrong\u003eChemical \u0026amp; petrochemical plants\u003c\/strong\u003e — lifting in chloride-rich, acidic, or caustic process environments\u003c\/li\u003e\n  \u003cli\u003e🔧 \u003cstrong\u003ePrecision machinery \u0026amp; OEM\u003c\/strong\u003e — attachment points requiring tight dimensional tolerances and superior corrosion resistance\u003c\/li\u003e\n  \u003cli\u003e🛠️ \u003cstrong\u003eVibration-prone environments\u003c\/strong\u003e — long shank provides deeper thread engagement for secure fastening under dynamic marine loads\u003c\/li\u003e\n  \u003cli\u003e🌡️ \u003cstrong\u003eDesalination \u0026amp; water treatment\u003c\/strong\u003e — high-chloride process environments where A2 would suffer pitting failure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Gallery\u003c\/h2\u003e\n\u003cp\u003eFULLERKREG DIN 444 Type B Marine Stainless Steel A4 Eye 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; custom labeling available for OEM, shipyard, 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) and third-party inspection certificates available on request\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustom Sizes:\u003c\/strong\u003e Non-standard sizes, 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 makes A4 (SUS316) better than A2 (SUS304) for marine applications?\u003c\/strong\u003e\u003cbr\u003e\nA: A4 stainless steel contains 2.0–2.5% Molybdenum, which dramatically improves resistance to pitting and crevice corrosion caused by chloride ions in seawater and salt-laden atmospheres. A2 lacks this element and can suffer pitting failure in prolonged marine exposure. For any application involving seawater, coastal environments, or chloride-rich chemicals, A4 is the correct choice.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between DIN 444 Type A and Type B?\u003c\/strong\u003e\u003cbr\u003e\nA: DIN 444 Type A has a short shank (standard thread engagement length), while Type B has a long shank providing extended thread engagement. Type B is preferred for thick materials, vibration-prone environments, or applications requiring maximum pull-out resistance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How does DIN 444 differ from DIN 580?\u003c\/strong\u003e\u003cbr\u003e\nA: DIN 444 eye bolts feature a \u003cstrong\u003eclosed ring\u003c\/strong\u003e (solid eye) and a longer shank, manufactured by forging plus precision machining. DIN 580 lifting eye bolts have an open forged loop and a shorter shank. DIN 444 offers higher dimensional precision and a closed eye for improved hook retention safety.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Are these eye bolts suitable for permanent offshore installation?\u003c\/strong\u003e\u003cbr\u003e\nA: FULLERKREG A4 DIN 444 Type B eye bolts are suitable for marine and offshore environments. For permanent subsea or splash-zone installations, consult a qualified structural engineer and verify compliance with applicable offshore standards.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Are these eye bolts suitable for angular or side loading?\u003c\/strong\u003e\u003cbr\u003e\nA: DIN 444 eye bolts are designed primarily for axial (in-line with the shank) loading. For angular loading, consult the applicable standard and apply appropriate reduction factors. For frequent multi-directional loading, swivel hoist rings are recommended.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What surface treatment is applied?\u003c\/strong\u003e\u003cbr\u003e\nA: FULLERKREG DIN 444 Type B A4 eye bolts are acid-washed (whitened) and passivated, removing surface contamination and enhancing the natural chromium-molybdenum oxide passive layer for maximum corrosion resistance in marine environments.\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 inspection certificates upon request for wholesale and OEM orders.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What thread standard is used?\u003c\/strong\u003e\u003cbr\u003e\nA: All threads are metric coarse (ISO\/DIN 13), compatible with standard metric tapped holes.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003cp\u003e\u003cem\u003eFULLERKREG — Precision Fasteners to DIN\/ISO Standards. All technical data is provided for reference. Always verify load ratings with a qualified engineer before use in safety-critical lifting applications.\u003c\/em\u003e\u003c\/p\u003e","products":[],"url":"https:\/\/www.fullerkr.com\/collections\/eye-bolts-din-444-type-b-marine-stainless-steel-a4.oembed","provider":"Fullerkreg Fasteners","version":"1.0","type":"link"}