{"title":"DIN 913 \/ ISO 4026 Socket Set Screw Flat Point — Alloy Steel 45H Black","description":"\u003ch2\u003eDIN 913 \/ ISO 4026 — Socket Set Screw with Flat Point | Alloy Steel 45H | Grade 12.9 | Black Oxide\u003c\/h2\u003e\n\n\u003cp\u003eFULLERKREG DIN 913 \/ ISO 4026 socket set screws (grub screws) with flat point are manufactured to full DIN and ISO dimensional standards in \u003cstrong\u003ealloy steel ML40Cr\u003c\/strong\u003e, heat-treated to \u003cstrong\u003e45H property class (equivalent to Grade 12.9)\u003c\/strong\u003e, with a \u003cstrong\u003eblack oxide surface finish\u003c\/strong\u003e. These high-strength set screws deliver maximum clamping force and torsional resistance for demanding industrial, automotive, and tooling applications where performance and reliability are critical.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eDetail\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 913 \/ ISO 4026\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eSocket Set Screw (Grub Screw) — Flat Point\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDrive\u003c\/td\u003e\n\u003ctd\u003eHexagon Socket (Hex Allen Key)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAlloy Steel ML40Cr (Chromium-Molybdenum Alloy Steel)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProperty Class\u003c\/td\u003e\n\u003ctd\u003e45H (Grade 12.9 equivalent per DIN 267-11 \/ ISO 898-1)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSurface Treatment\u003c\/td\u003e\n\u003ctd\u003eBlack Oxide (Blackening)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003eMetric Coarse Thread (ISO 68-1)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eThread Tolerance\u003c\/td\u003e\n\u003ctd\u003e6H (internal) \/ 6g (external) per ISO 965\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTensile Strength\u003c\/td\u003e\n\u003ctd\u003eMin. 1220 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003e39–51 HRC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSize Range\u003c\/td\u003e\n\u003ctd\u003eM1.6 — M24\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLength Range\u003c\/td\u003e\n\u003ctd\u003e2 mm — 60 mm (size-dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePoint Type\u003c\/td\u003e\n\u003ctd\u003eFlat Point\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHead Type\u003c\/td\u003e\n\u003ctd\u003eFully Threaded, Headless (Grub)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRoHS Compliant\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eKey Dimensions (DIN 913 \/ ISO 4026)\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eThread (d)\u003c\/th\u003e\n      \u003cth\u003eHex Key Size (s)\u003c\/th\u003e\n      \u003cth\u003eMin. Thread Engagement\u003c\/th\u003e\n      \u003cth\u003eFlat Point Dia. (dp) approx.\u003c\/th\u003e\n      \u003cth\u003eCommon Lengths\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM1.6\u003c\/td\u003e\n\u003ctd\u003e0.7 mm\u003c\/td\u003e\n\u003ctd\u003e0.8 mm\u003c\/td\u003e\n\u003ctd\u003e0.80 mm\u003c\/td\u003e\n\u003ctd\u003e2, 3, 4, 5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM2\u003c\/td\u003e\n\u003ctd\u003e0.9 mm\u003c\/td\u003e\n\u003ctd\u003e1.0 mm\u003c\/td\u003e\n\u003ctd\u003e1.00 mm\u003c\/td\u003e\n\u003ctd\u003e2, 3, 4, 5, 6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM2.5\u003c\/td\u003e\n\u003ctd\u003e1.3 mm\u003c\/td\u003e\n\u003ctd\u003e1.25 mm\u003c\/td\u003e\n\u003ctd\u003e1.50 mm\u003c\/td\u003e\n\u003ctd\u003e3, 4, 5, 6, 8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003e1.5 mm\u003c\/td\u003e\n\u003ctd\u003e1.5 mm\u003c\/td\u003e\n\u003ctd\u003e2.00 mm\u003c\/td\u003e\n\u003ctd\u003e3, 4, 5, 6, 8, 10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e2.0 mm\u003c\/td\u003e\n\u003ctd\u003e2.0 mm\u003c\/td\u003e\n\u003ctd\u003e2.50 mm\u003c\/td\u003e\n\u003ctd\u003e4, 5, 6, 8, 10, 12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e2.5 mm\u003c\/td\u003e\n\u003ctd\u003e2.5 mm\u003c\/td\u003e\n\u003ctd\u003e3.50 mm\u003c\/td\u003e\n\u003ctd\u003e5, 6, 8, 10, 12, 16 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e3.0 mm\u003c\/td\u003e\n\u003ctd\u003e3.0 mm\u003c\/td\u003e\n\u003ctd\u003e4.00 mm\u003c\/td\u003e\n\u003ctd\u003e6, 8, 10, 12, 16, 20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e4.0 mm\u003c\/td\u003e\n\u003ctd\u003e4.0 mm\u003c\/td\u003e\n\u003ctd\u003e5.50 mm\u003c\/td\u003e\n\u003ctd\u003e8, 10, 12, 16, 20, 25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e5.0 mm\u003c\/td\u003e\n\u003ctd\u003e5.0 mm\u003c\/td\u003e\n\u003ctd\u003e7.00 mm\u003c\/td\u003e\n\u003ctd\u003e10, 12, 16, 20, 25, 30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e6.0 mm\u003c\/td\u003e\n\u003ctd\u003e6.0 mm\u003c\/td\u003e\n\u003ctd\u003e8.50 mm\u003c\/td\u003e\n\u003ctd\u003e12, 16, 20, 25, 30, 40 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e8.0 mm\u003c\/td\u003e\n\u003ctd\u003e8.0 mm\u003c\/td\u003e\n\u003ctd\u003e12.00 mm\u003c\/td\u003e\n\u003ctd\u003e16, 20, 25, 30, 40, 50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e10.0 mm\u003c\/td\u003e\n\u003ctd\u003e10.0 mm\u003c\/td\u003e\n\u003ctd\u003e15.00 mm\u003c\/td\u003e\n\u003ctd\u003e20, 25, 30, 40, 50, 60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM24\u003c\/td\u003e\n\u003ctd\u003e12.0 mm\u003c\/td\u003e\n\u003ctd\u003e12.0 mm\u003c\/td\u003e\n\u003ctd\u003e18.00 mm\u003c\/td\u003e\n\u003ctd\u003e25, 30, 40, 50, 60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cem\u003eAll dimensions per DIN 913 \/ ISO 4026. Consult FULLERKREG datasheet or contact us for full tolerance tables.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eMaterial — Alloy Steel ML40Cr\u003c\/h2\u003e\n\n\u003cp\u003eML40Cr is a chromium-alloyed medium-carbon steel specifically selected for high-strength fastener production. Its composition and heat treatment characteristics make it the standard material for 45H \/ Grade 12.9 set screws.\u003c\/p\u003e\n\n\u003ch3\u003eChemical Composition (ML40Cr)\u003c\/h3\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eElement\u003c\/th\u003e\n\u003cth\u003eContent (%)\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCarbon (C)\u003c\/td\u003e\n\u003ctd\u003e0.37 – 0.44\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSilicon (Si)\u003c\/td\u003e\n\u003ctd\u003e0.17 – 0.37\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eManganese (Mn)\u003c\/td\u003e\n\u003ctd\u003e0.50 – 0.80\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChromium (Cr)\u003c\/td\u003e\n\u003ctd\u003e0.80 – 1.10\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePhosphorus (P)\u003c\/td\u003e\n\u003ctd\u003e≤ 0.025\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSulfur (S)\u003c\/td\u003e\n\u003ctd\u003e≤ 0.025\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMechanical Properties — 45H Property Class (Grade 12.9 Equivalent)\u003c\/h3\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003cth\u003eStandard\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTensile Strength (Rm)\u003c\/td\u003e\n\u003ctd\u003eMin. 1220 MPa\u003c\/td\u003e\n\u003ctd\u003eDIN 267-11 \/ ISO 898-1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProof Load Stress (Sp)\u003c\/td\u003e\n\u003ctd\u003eMin. 1100 MPa\u003c\/td\u003e\n\u003ctd\u003eDIN 267-11\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003e39 – 51 HRC (385 – 530 HV)\u003c\/td\u003e\n\u003ctd\u003eDIN 267-11\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMinimum Breaking Torque\u003c\/td\u003e\n\u003ctd\u003ePer DIN 267-11 size table\u003c\/td\u003e\n\u003ctd\u003eDIN 267-11\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHeat Treatment\u003c\/td\u003e\n\u003ctd\u003eQuenched \u0026amp; Tempered\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e45H vs. Standard Property Classes\u003c\/h3\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eProperty Class\u003c\/th\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003cth\u003eTensile Strength\u003c\/th\u003e\n\u003cth\u003eHardness\u003c\/th\u003e\n\u003cth\u003eTypical Use\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e14H\u003c\/td\u003e\n\u003ctd\u003eCarbon steel\u003c\/td\u003e\n\u003ctd\u003eMin. 700 MPa\u003c\/td\u003e\n\u003ctd\u003e22–32 HRC\u003c\/td\u003e\n\u003ctd\u003eGeneral purpose\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e22H\u003c\/td\u003e\n\u003ctd\u003eCarbon \/ alloy steel\u003c\/td\u003e\n\u003ctd\u003eMin. 900 MPa\u003c\/td\u003e\n\u003ctd\u003e32–39 HRC\u003c\/td\u003e\n\u003ctd\u003eMedium duty\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e45H\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAlloy steel ML40Cr\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eMin. 1220 MPa\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e39–51 HRC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eHigh-strength, heavy duty\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cem\u003e45H is the highest standard property class for set screws per DIN 267-11, equivalent to Grade 12.9 in the ISO 898-1 bolt property class system.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eSurface Finish — Black Oxide\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProcess:\u003c\/strong\u003e Hot alkaline blackening — a chemical conversion coating that forms a thin magnetite (Fe₃O₄) layer on the steel surface\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAppearance:\u003c\/strong\u003e Uniform matte black finish with a professional, low-reflectance appearance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Thickness:\u003c\/strong\u003e Typically 1–2 microns — no significant dimensional change, preserving thread tolerances\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorrosion Resistance:\u003c\/strong\u003e Moderate — provides basic protection against light oxidation; supplemental oil or wax treatment recommended for enhanced protection in humid environments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo Hydrogen Embrittlement Risk:\u003c\/strong\u003e Unlike electroplating, black oxide does not introduce hydrogen into the steel — critical for high-strength Grade 12.9 fasteners where hydrogen embrittlement is a serious concern\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdhesion:\u003c\/strong\u003e Excellent base for supplemental lubricants and thread-locking compounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Resistance:\u003c\/strong\u003e Stable up to approximately 300°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eFlat Point — Design \u0026amp; Function\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eflat point\u003c\/strong\u003e is the most versatile set screw tip geometry. Combined with the high clamping force of Grade 12.9 \/ 45H, it delivers exceptional holding performance:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNon-marring clamping\u003c\/strong\u003e — distributes force over a broad flat area; does not indent or damage polished or hardened shafts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequent adjustment\u003c\/strong\u003e — can be loosened and repositioned without leaving permanent marks\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh clamping force\u003c\/strong\u003e — the 45H grade allows significantly higher tightening torques than standard grades, maximizing friction-based holding power\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardened shafts\u003c\/strong\u003e — flat point is the correct choice when the mating shaft is hardened steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThin-walled components\u003c\/strong\u003e — lower risk of deformation compared to cup or cone points\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFlat Point vs. Other Set Screw Point Types\u003c\/h3\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003ePoint Type\u003c\/th\u003e\n      \u003cth\u003eStandard\u003c\/th\u003e\n      \u003cth\u003eBest For\u003c\/th\u003e\n      \u003cth\u003eShaft Marking\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlat Point\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIN 913 \/ ISO 4026\u003c\/td\u003e\n\u003ctd\u003eNon-marring, frequent adjustment, hardened shafts\u003c\/td\u003e\n\u003ctd\u003eNone \/ Minimal\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCup Point\u003c\/td\u003e\n\u003ctd\u003eDIN 916 \/ ISO 4029\u003c\/td\u003e\n\u003ctd\u003ePermanent locking, soft shafts, high torque\u003c\/td\u003e\n\u003ctd\u003eCircular indent\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCone Point\u003c\/td\u003e\n\u003ctd\u003eDIN 914 \/ ISO 4027\u003c\/td\u003e\n\u003ctd\u003ePermanent location, V-groove shafts\u003c\/td\u003e\n\u003ctd\u003eDeep indent\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDog Point\u003c\/td\u003e\n\u003ctd\u003eDIN 915 \/ ISO 4028\u003c\/td\u003e\n\u003ctd\u003ePrecise location, keyway-free shafts\u003c\/td\u003e\n\u003ctd\u003eNone (pin engagement)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOval Point\u003c\/td\u003e\n\u003ctd\u003eISO 4026 variant\u003c\/td\u003e\n\u003ctd\u003eCurved surfaces, pivot points\u003c\/td\u003e\n\u003ctd\u003eMinimal\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\n\u003cp\u003eThe combination of 45H \/ Grade 12.9 alloy steel and flat point geometry makes these set screws the preferred choice for high-load, precision-critical applications:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMachine Tool \u0026amp; Tooling:\u003c\/strong\u003e Securing cutting tool holders, collets, boring bars, and milling arbors where maximum clamping force is essential\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomotive \u0026amp; Motorsport:\u003c\/strong\u003e Drivetrain components, gear assemblies, camshaft collars, and high-performance engine parts subject to vibration and high torque\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial Machinery:\u003c\/strong\u003e Securing pulleys, sprockets, gears, cams, and shaft collars in heavy-duty power transmission systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRobotics \u0026amp; Automation:\u003c\/strong\u003e Precision positioning of servo motor shafts, encoder wheels, and actuator components requiring repeatable, high-force clamping\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHydraulic \u0026amp; Pneumatic Equipment:\u003c\/strong\u003e Locking adjustment screws and valve components under high operating pressures\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAerospace \u0026amp; Defense (non-flight critical):\u003c\/strong\u003e Ground support equipment and test fixtures requiring high-strength fasteners\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePress \u0026amp; Die Tooling:\u003c\/strong\u003e Securing die components, guide pins, and adjustable stops in stamping and forming tools\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGeneral Heavy Industry:\u003c\/strong\u003e Any application where standard-grade set screws have proven insufficient under load or vibration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eInstallation Guidelines\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread engagement:\u003c\/strong\u003e Minimum engagement length = 1× nominal diameter (e.g., M8 requires min. 8 mm engagement); for maximum holding power, 1.5× diameter is recommended\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTightening torque:\u003c\/strong\u003e Use a calibrated torque wrench; 45H \/ Grade 12.9 allows significantly higher torques than standard grades — refer to the torque table below\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLubrication:\u003c\/strong\u003e Apply molybdenum disulfide (MoS₂) paste or equivalent anti-galling compound to threads; reduces friction coefficient and ensures accurate torque-to-clamp-force conversion\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex key:\u003c\/strong\u003e Use a high-quality, calibrated hex key (Allen key) of the correct size — see dimension table above; worn or undersized keys risk rounding the socket at high torques\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShaft flat:\u003c\/strong\u003e For maximum holding power, machine a flat on the shaft at the set screw contact point; this converts friction-based holding to positive mechanical engagement\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLocking:\u003c\/strong\u003e For high-vibration applications, use medium-strength thread-locking adhesive in addition to correct torque; do not rely on torque alone in severe vibration environments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHydrogen embrittlement:\u003c\/strong\u003e Black oxide finish does not introduce hydrogen — safe for Grade 12.9 \/ 45H. Never use electroplated fasteners at this strength level without baking treatment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDo not substitute lower grades:\u003c\/strong\u003e If a 45H \/ Grade 12.9 set screw is specified, do not substitute with lower property classes — the application load calculations are based on the specified grade\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eRecommended Tightening Torques (45H \/ Grade 12.9, MoS₂ Lubricated)\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eThread\u003c\/th\u003e\n\u003cth\u003eTorque (N·m) — Reference\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\u003e0.12 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM2.5\u003c\/td\u003e\n\u003ctd\u003e0.25 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003e0.45 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e1.05 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e2.10 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003ctd\u003e3.60 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003ctd\u003e8.80 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003ctd\u003e17.5 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e30.0 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003ctd\u003e75.0 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003ctd\u003e145.0 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cem\u003eReference values for MoS₂-lubricated 45H \/ Grade 12.9 alloy steel set screws. For dry installation, increase values by approximately 25–30%. Always verify with your engineering team for safety-critical applications.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eStandards \u0026amp; Compliance\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIN 913\u003c\/strong\u003e — Socket set screws with hexagon socket and flat point\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO 4026\u003c\/strong\u003e — Hexagon socket set screws with flat point\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIN 267-11\u003c\/strong\u003e — Technical delivery conditions for fasteners — set screws; defines 45H property class (tensile strength, hardness, breaking torque)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO 898-1\u003c\/strong\u003e — Mechanical properties of fasteners made of carbon steel and alloy steel; Grade 12.9 reference\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO 965-1\u003c\/strong\u003e — Metric screw thread tolerances\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRoHS 2011\/65\/EU\u003c\/strong\u003e — Restriction of hazardous substances compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003ePackaging \u0026amp; Ordering\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAvailable in standard retail packs, engineering bulk packs, and full-box quantities\u003c\/li\u003e\n  \u003cli\u003eCustom quantity packaging available for OEM, toolroom, and wholesale customers\u003c\/li\u003e\n  \u003cli\u003eEach pack labeled with: Part number, Thread size × Length, Material (ML40Cr), Property Class (45H), Standard (DIN 913 \/ ISO 4026), Surface (Black Oxide), Quantity\u003c\/li\u003e\n  \u003cli\u003eBulk orders: contact FULLERKREG for volume pricing and lead times\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e100% dimensional inspection on critical sizes per DIN 913 \/ ISO 4026\u003c\/li\u003e\n  \u003cli\u003eHardness testing per DIN 267-11 (39–51 HRC) on every production batch\u003c\/li\u003e\n  \u003cli\u003eBreaking torque testing per DIN 267-11 size requirements\u003c\/li\u003e\n  \u003cli\u003eMaterial certification available on request — confirms ML40Cr alloy steel composition\u003c\/li\u003e\n  \u003cli\u003eThread gauge inspection (Go\/No-Go) per ISO 965\u003c\/li\u003e\n  \u003cli\u003eHeat treatment records (quench \u0026amp; temper parameters) maintained for full traceability\u003c\/li\u003e\n  \u003cli\u003eBlack oxide coating uniformity inspection on each batch\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 45H mean for set screws?\u003c\/strong\u003e\u003cbr\u003e\nA: 45H is the property class designation for set screws defined in DIN 267-11. It specifies a minimum tensile strength of 1220 MPa and a hardness range of 39–51 HRC. It is the highest standard property class for set screws and is equivalent to Grade 12.9 in the ISO 898-1 bolt classification system.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between DIN 913 and ISO 4026?\u003c\/strong\u003e\u003cbr\u003e\nA: DIN 913 and ISO 4026 are technically equivalent standards for socket set screws with flat point. DIN 913 is the German standard; ISO 4026 is the international equivalent. Dimensions and tolerances are identical — parts are fully interchangeable.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Why is black oxide used instead of zinc plating for Grade 12.9 set screws?\u003c\/strong\u003e\u003cbr\u003e\nA: Electroplating processes (including zinc plating) introduce hydrogen into high-strength steel, creating a risk of hydrogen embrittlement — a form of delayed brittle fracture that can cause catastrophic failure without warning. Black oxide is a chemical conversion coating that does not introduce hydrogen, making it the safe and standard surface treatment for Grade 12.9 \/ 45H fasteners. This is specified in ISO 4042 and DIN 267-11.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use these set screws in corrosive environments?\u003c\/strong\u003e\u003cbr\u003e\nA: Black oxide provides only basic corrosion protection. For mildly corrosive environments, apply a supplemental oil or wax coating after installation. For environments with significant moisture, chemicals, or salt exposure, consider using stainless steel set screws instead. Contact FULLERKREG for guidance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What hex key (Allen key) size do I need?\u003c\/strong\u003e\u003cbr\u003e\nA: Refer to the dimension table above. Examples: M3 requires a 1.5 mm hex key; M6 requires a 3.0 mm hex key; M10 requires a 5.0 mm hex key. For Grade 12.9 torques, always use a high-quality hex key to avoid rounding the socket.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I maximize holding power with a flat point set screw?\u003c\/strong\u003e\u003cbr\u003e\nA: Machine a flat on the shaft at the set screw contact point. This converts the holding mechanism from pure friction to a combination of friction and positive mechanical engagement, significantly increasing resistance to both axial and rotational movement. Apply the correct tightening torque using a calibrated torque wrench.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Are these RoHS compliant?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. FULLERKREG 45H alloy steel set screws with black oxide finish are manufactured without restricted hazardous substances and are RoHS 2011\/65\/EU compliant.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I get a material test certificate (MTC)?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. FULLERKREG provides Mill Test Certificates on request, confirming the ML40Cr alloy steel chemical composition and heat treatment property class (45H).\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003cp\u003e\u003cem\u003eFULLERKREG — Precision Fasteners to DIN \/ ISO Standards. For technical support, custom sizes, or bulk quotations, please contact our engineering team.\u003c\/em\u003e\u003c\/p\u003e","products":[],"url":"https:\/\/www.fullerkr.com\/collections\/din-913-45h-socket-set-screw-flat-point.oembed","provider":"Fullerkreg Fasteners","version":"1.0","type":"link"}