{"title":"Torx Pan Head Screws (GB2672-2017 \/ ISO 14583) - Marine Stainless Steel (A4)","description":"\u003ch1\u003eTorx Pan Head Screws — GB\/T 2672-2017 \/ ISO 14583 | Marine Stainless Steel A4 (SUS316)\u003c\/h1\u003e\n\n\u003cp\u003eFULLERKREG A4 marine-grade Torx pan head screws (hexalobular socket pan head screws) are manufactured to \u003cstrong\u003eGB\/T 2672-2017\u003c\/strong\u003e and the equivalent international standard \u003cstrong\u003eISO 14583:2011(MOD)\u003c\/strong\u003e. Constructed from A4 (SUS316) stainless steel with added molybdenum content, these fasteners offer superior resistance to chloride corrosion, pitting, and crevice corrosion — making them the preferred choice for marine, coastal, chemical, and food-processing environments where A2 stainless steel is insufficient.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e A4 Marine Stainless Steel (SUS316)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface Treatment:\u003c\/strong\u003e Passivated \u0026amp; Whitened\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStrength Grade:\u003c\/strong\u003e A4-70\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Type:\u003c\/strong\u003e Torx \/ Hexalobular (T-drive)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type:\u003c\/strong\u003e Pan Head\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e GB\/T 2672-2017 \/ ISO 14583:2011(MOD)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize Range:\u003c\/strong\u003e M2 – M10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e Metric coarse thread (ISO 68-1), tolerance class 6g\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eDimensional Data (GB\/T 2672-2017 \/ ISO 14583)\u003c\/h2\u003e\n\u003cp\u003eAll dimensions in \u003cstrong\u003emm\u003c\/strong\u003e. Data verified against GB\/T 2672-2017 and ISO 14583:2011 standard tables.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%;font-size:13px;\"\u003e\n  \u003cthead style=\"background-color:#f2f2f2;\"\u003e\n    \u003ctr\u003e\n      \u003cth\u003eThread\u003cbr\u003ed\u003c\/th\u003e\n      \u003cth\u003ePitch\u003cbr\u003ep (mm)\u003c\/th\u003e\n      \u003cth\u003eHead Dia.\u003cbr\u003edk max (mm)\u003c\/th\u003e\n      \u003cth\u003eHead Dia.\u003cbr\u003edk min (mm)\u003c\/th\u003e\n      \u003cth\u003eHead Height\u003cbr\u003ek nom (mm)\u003c\/th\u003e\n      \u003cth\u003eHead Height\u003cbr\u003ek min (mm)\u003c\/th\u003e\n      \u003cth\u003eHead Height\u003cbr\u003ek max (mm)\u003c\/th\u003e\n      \u003cth\u003eTorx\u003cbr\u003eSize\u003c\/th\u003e\n      \u003cth\u003eDrive Depth\u003cbr\u003et min (mm)\u003c\/th\u003e\n      \u003cth\u003eShank Dia.\u003cbr\u003eds max (mm)\u003c\/th\u003e\n      \u003cth\u003eUnit Weight\u003cbr\u003e(g \/ 100 pcs)*\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM2\u003c\/td\u003e\n\u003ctd\u003e0.40\u003c\/td\u003e\n\u003ctd\u003e4.00\u003c\/td\u003e\n\u003ctd\u003e3.70\u003c\/td\u003e\n\u003ctd\u003e1.50\u003c\/td\u003e\n\u003ctd\u003e1.35\u003c\/td\u003e\n\u003ctd\u003e1.65\u003c\/td\u003e\n\u003ctd\u003eT6\u003c\/td\u003e\n\u003ctd\u003e0.70\u003c\/td\u003e\n\u003ctd\u003e2.00\u003c\/td\u003e\n\u003ctd\u003e~18\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM2.5\u003c\/td\u003e\n\u003ctd\u003e0.45\u003c\/td\u003e\n\u003ctd\u003e5.00\u003c\/td\u003e\n\u003ctd\u003e4.70\u003c\/td\u003e\n\u003ctd\u003e1.75\u003c\/td\u003e\n\u003ctd\u003e1.57\u003c\/td\u003e\n\u003ctd\u003e1.93\u003c\/td\u003e\n\u003ctd\u003eT8\u003c\/td\u003e\n\u003ctd\u003e0.90\u003c\/td\u003e\n\u003ctd\u003e2.50\u003c\/td\u003e\n\u003ctd\u003e~36\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003e0.50\u003c\/td\u003e\n\u003ctd\u003e6.00\u003c\/td\u003e\n\u003ctd\u003e5.70\u003c\/td\u003e\n\u003ctd\u003e2.00\u003c\/td\u003e\n\u003ctd\u003e1.82\u003c\/td\u003e\n\u003ctd\u003e2.18\u003c\/td\u003e\n\u003ctd\u003eT10\u003c\/td\u003e\n\u003ctd\u003e1.10\u003c\/td\u003e\n\u003ctd\u003e3.00\u003c\/td\u003e\n\u003ctd\u003e~61\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM3.5\u003c\/td\u003e\n\u003ctd\u003e0.60\u003c\/td\u003e\n\u003ctd\u003e7.00\u003c\/td\u003e\n\u003ctd\u003e6.64\u003c\/td\u003e\n\u003ctd\u003e2.40\u003c\/td\u003e\n\u003ctd\u003e2.18\u003c\/td\u003e\n\u003ctd\u003e2.62\u003c\/td\u003e\n\u003ctd\u003eT15\u003c\/td\u003e\n\u003ctd\u003e1.30\u003c\/td\u003e\n\u003ctd\u003e3.50\u003c\/td\u003e\n\u003ctd\u003e~102\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e0.70\u003c\/td\u003e\n\u003ctd\u003e8.00\u003c\/td\u003e\n\u003ctd\u003e7.64\u003c\/td\u003e\n\u003ctd\u003e2.70\u003c\/td\u003e\n\u003ctd\u003e2.46\u003c\/td\u003e\n\u003ctd\u003e2.94\u003c\/td\u003e\n\u003ctd\u003eT20\u003c\/td\u003e\n\u003ctd\u003e1.50\u003c\/td\u003e\n\u003ctd\u003e4.00\u003c\/td\u003e\n\u003ctd\u003e~158\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e0.80\u003c\/td\u003e\n\u003ctd\u003e9.50\u003c\/td\u003e\n\u003ctd\u003e9.14\u003c\/td\u003e\n\u003ctd\u003e3.30\u003c\/td\u003e\n\u003ctd\u003e3.02\u003c\/td\u003e\n\u003ctd\u003e3.58\u003c\/td\u003e\n\u003ctd\u003eT25\u003c\/td\u003e\n\u003ctd\u003e1.90\u003c\/td\u003e\n\u003ctd\u003e5.00\u003c\/td\u003e\n\u003ctd\u003e~295\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e1.00\u003c\/td\u003e\n\u003ctd\u003e12.00\u003c\/td\u003e\n\u003ctd\u003e11.57\u003c\/td\u003e\n\u003ctd\u003e4.00\u003c\/td\u003e\n\u003ctd\u003e3.70\u003c\/td\u003e\n\u003ctd\u003e4.30\u003c\/td\u003e\n\u003ctd\u003eT30\u003c\/td\u003e\n\u003ctd\u003e2.30\u003c\/td\u003e\n\u003ctd\u003e6.00\u003c\/td\u003e\n\u003ctd\u003e~540\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\u003e16.00\u003c\/td\u003e\n\u003ctd\u003e15.57\u003c\/td\u003e\n\u003ctd\u003e5.30\u003c\/td\u003e\n\u003ctd\u003e4.92\u003c\/td\u003e\n\u003ctd\u003e5.68\u003c\/td\u003e\n\u003ctd\u003eT40\u003c\/td\u003e\n\u003ctd\u003e3.00\u003c\/td\u003e\n\u003ctd\u003e8.00\u003c\/td\u003e\n\u003ctd\u003e~1,270\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e1.50\u003c\/td\u003e\n\u003ctd\u003e20.00\u003c\/td\u003e\n\u003ctd\u003e19.48\u003c\/td\u003e\n\u003ctd\u003e6.50\u003c\/td\u003e\n\u003ctd\u003e6.05\u003c\/td\u003e\n\u003ctd\u003e6.95\u003c\/td\u003e\n\u003ctd\u003eT50\u003c\/td\u003e\n\u003ctd\u003e3.80\u003c\/td\u003e\n\u003ctd\u003e10.00\u003c\/td\u003e\n\u003ctd\u003e~2,850\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size:12px;color:#666;\"\u003e* Unit weight values are approximate reference values for nominal length L=12mm. A4 (SUS316) density is approximately 7.98 g\/cm³, slightly higher than A2. Actual weight varies by length. Contact FULLERKREG for precise weight data by length.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eShank Length Tolerance (ISO 14583 \/ GB\/T 2672-2017)\u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse;width:50%;font-size:13px;\"\u003e\n  \u003cthead style=\"background-color:#f2f2f2;\"\u003e\n    \u003ctr\u003e\n\u003cth\u003eNominal Length l (mm)\u003c\/th\u003e\n\u003cth\u003eTolerance +\/- (mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e4 – 6\u003c\/td\u003e\n\u003ctd\u003e0.20\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e6 – 10\u003c\/td\u003e\n\u003ctd\u003e0.25\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e10 – 16\u003c\/td\u003e\n\u003ctd\u003e0.30\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e16 – 25\u003c\/td\u003e\n\u003ctd\u003e0.35\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e25 – 35\u003c\/td\u003e\n\u003ctd\u003e0.40\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e35 – 50\u003c\/td\u003e\n\u003ctd\u003e0.50\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e50 – 60\u003c\/td\u003e\n\u003ctd\u003e0.60\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 Choose Marine Grade?\u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%;font-size:13px;\"\u003e\n  \u003cthead style=\"background-color:#f2f2f2;\"\u003e\n    \u003ctr\u003e\n      \u003cth\u003eProperty\u003c\/th\u003e\n      \u003cth\u003eA2 (SUS304)\u003c\/th\u003e\n      \u003cth\u003eA4 (SUS316)\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChromium Content\u003c\/td\u003e\n\u003ctd\u003e17–19%\u003c\/td\u003e\n\u003ctd\u003e16–18%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMolybdenum Content\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003e2–3% (key differentiator)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChloride 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 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\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\u003eStrength Grade\u003c\/td\u003e\n\u003ctd\u003eA2-70\u003c\/td\u003e\n\u003ctd\u003eA4-70\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTypical Applications\u003c\/td\u003e\n\u003ctd\u003eIndoor, general purpose\u003c\/td\u003e\n\u003ctd\u003eMarine, coastal, chemical, food-grade\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eSelection Guide\u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%;font-size:13px;\"\u003e\n  \u003cthead style=\"background-color:#f2f2f2;\"\u003e\n    \u003ctr\u003e\n      \u003cth\u003eApplication\u003c\/th\u003e\n      \u003cth\u003eRecommended Specification\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\u003eMarine \/ boat fittings \u0026amp; deck hardware\u003c\/td\u003e\n      \u003ctd\u003eM4 – M8, A4-70, Passivated\u003c\/td\u003e\n      \u003ctd\u003eMolybdenum addition resists saltwater chloride attack and pitting\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCoastal outdoor structures\u003c\/td\u003e\n      \u003ctd\u003eM4 – M10, A4-70, Passivated\u003c\/td\u003e\n      \u003ctd\u003eLong-term corrosion resistance in salt-laden air environments\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eFood processing \u0026amp; beverage equipment\u003c\/td\u003e\n      \u003ctd\u003eM3 – M8, A4-70\u003c\/td\u003e\n      \u003ctd\u003eSUS316 meets hygiene requirements; resists acidic cleaning agents\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eChemical plant \u0026amp; industrial equipment\u003c\/td\u003e\n      \u003ctd\u003eM4 – M10, A4-70\u003c\/td\u003e\n      \u003ctd\u003eResistance to a wide range of corrosive chemicals and process fluids\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSwimming pool \u0026amp; water treatment facilities\u003c\/td\u003e\n      \u003ctd\u003eM4 – M8, A4-70, Passivated\u003c\/td\u003e\n      \u003ctd\u003eChlorinated water resistance; prevents rust staining on surfaces\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePrecision electronics in humid environments\u003c\/td\u003e\n      \u003ctd\u003eM2 – M4, A4-70\u003c\/td\u003e\n      \u003ctd\u003eMiniature size with enhanced corrosion protection over A2\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eStandard Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGB\/T 2672-2017\u003c\/strong\u003e is the Chinese national standard for hexalobular socket pan head screws, equivalent to and modified from \u003cstrong\u003eISO 14583:2011\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eCovers sizes M2 through M10 with nominal lengths from 3 mm to 60 mm (size-dependent).\u003c\/li\u003e\n  \u003cli\u003eThread tolerance: \u003cstrong\u003e6g\u003c\/strong\u003e per ISO 965-1.\u003c\/li\u003e\n  \u003cli\u003eTorx drive sizes follow \u003cstrong\u003eISO 10664\u003c\/strong\u003e. The hexalobular recess provides higher torque transmission than Phillips or slotted drives with reduced cam-out risk.\u003c\/li\u003e\n  \u003cli\u003eA4 stainless steel is defined in \u003cstrong\u003eISO 3506-1\u003c\/strong\u003e as austenitic stainless steel with molybdenum addition (SUS316 \/ 316L equivalent).\u003c\/li\u003e\n  \u003cli\u003eStrength grade \u003cstrong\u003eA4-70\u003c\/strong\u003e indicates minimum tensile strength of 700 MPa per ISO 3506-1.\u003c\/li\u003e\n  \u003cli\u003eMarking: Products are marked with the manufacturer identification and strength grade A4-70 where size permits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Gallery\u003c\/h2\u003e\n\u003cp\u003eFULLERKREG Torx Pan Head Screws — A4 Marine Stainless Steel, Passivated Finish\u003c\/p\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;\"\u003e[Product Image 1]\u003c\/td\u003e\n      \u003ctd style=\"width:25%;vertical-align:top;\"\u003e[Product Image 2]\u003c\/td\u003e\n      \u003ctd style=\"width:25%;vertical-align:top;\"\u003e[Product Image 3]\u003c\/td\u003e\n      \u003ctd style=\"width:25%;vertical-align:top;\"\u003e[Product Image 4]\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\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 no middlemen, ensuring competitive wholesale rates\u003c\/li\u003e\n  \u003cli\u003e📐 \u003cstrong\u003eStandard Compliance\u003c\/strong\u003e — Strictly manufactured to GB\/T 2672-2017 \u0026amp; ISO 14583, with full dimensional inspection\u003c\/li\u003e\n  \u003cli\u003e🔬 \u003cstrong\u003eMaterial Certified\u003c\/strong\u003e — A4 (SUS316) marine stainless steel with material test reports (MTR) and mill certificates available on request\u003c\/li\u003e\n  \u003cli\u003e📦 \u003cstrong\u003eBulk \u0026amp; Custom Orders\u003c\/strong\u003e — Flexible MOQ; custom packaging, labeling, and length combinations available\u003c\/li\u003e\n  \u003cli\u003e🌍 \u003cstrong\u003eGlobal Export\u003c\/strong\u003e — Experienced in international shipping with full export documentation support\u003c\/li\u003e\n  \u003cli\u003e⚡ \u003cstrong\u003eFast Quotation\u003c\/strong\u003e — RFQ response within 24 hours for standard and non-standard specifications\u003c\/li\u003e\n\u003c\/ul\u003e","products":[],"url":"https:\/\/www.fullerkr.com\/collections\/torx-pan-head-screws-gb2672-2017-iso-14583-marine-stainless-steel-a4.oembed","provider":"Fullerkreg Fasteners","version":"1.0","type":"link"}