{"title":"DIN 914 \/ ISO 4027 Socket Set Screw with Cone Point A2 Stainless","description":"\u003ch2\u003eDIN 914 \/ ISO 4027 — Socket Set Screw with Cone Point | A2 Stainless Steel\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e FULLERKREG  |  \u003cstrong\u003eMaterial:\u003c\/strong\u003e A2 Stainless Steel (SUS304 \/ 1.4301)  |  \u003cstrong\u003eSurface:\u003c\/strong\u003e Passivated (Bright Finish)\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eFULLERKREG DIN 914 \/ ISO 4027 Socket Set Screws with Cone Point in A2 Stainless Steel (SUS304) are precision headless set screws designed for permanent, high-force locking and positioning applications in corrosion-sensitive environments. The cone point — a sharp, conical tip — penetrates or seats into a mating conical recess on the shaft, creating an exceptionally strong mechanical lock with minimal tendency to loosen under vibration or axial load.\u003c\/p\u003e\n\u003cp\u003eCombined with the inherent corrosion resistance of A2 stainless steel and a bright passivated finish, these set screws are the preferred choice for food processing, pharmaceutical, chemical, marine, and outdoor industrial applications where both corrosion resistance and secure permanent locking are required.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eStandards \u0026amp; Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e DIN 914 (1987), ISO 4027\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Form:\u003c\/strong\u003e ISO Metric Coarse Thread (per ISO 68-1)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Tolerance:\u003c\/strong\u003e 6g (per ISO 965-1)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Type:\u003c\/strong\u003e Hexagon Socket (Allen \/ Hex Key)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type:\u003c\/strong\u003e Cone Point — sharp conical tip (included angle: 90° for M1.6–M8; 120° for M10 and above, per DIN 914)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e A2 Stainless Steel (SUS304 \/ 1.4301 \/ 18-8)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade:\u003c\/strong\u003e A2 per ISO 3506-3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface Treatment:\u003c\/strong\u003e Passivated — bright, clean finish with enhanced corrosion resistance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplicable Standard for Mechanical Properties:\u003c\/strong\u003e ISO 3506-3\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eMaterial \u0026amp; Mechanical Properties\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\u003cth\u003eStandard\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eA2 Stainless Steel (SUS304 \/ 1.4301)\u003c\/td\u003e\n\u003ctd\u003eISO 3506-3\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChemical Composition (Cr)\u003c\/td\u003e\n\u003ctd\u003e17.5 – 19.5%\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChemical Composition (Ni)\u003c\/td\u003e\n\u003ctd\u003e8.0 – 10.5%\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMinimum Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e700 MPa (A2-70)\u003c\/td\u003e\n\u003ctd\u003eISO 3506-3\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHardness (typical)\u003c\/td\u003e\n\u003ctd\u003eHV 200 – 300\u003c\/td\u003e\n\u003ctd\u003eISO 3506-3\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eThread Tolerance\u003c\/td\u003e\n\u003ctd\u003e6g\u003c\/td\u003e\n\u003ctd\u003eISO 965-1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSurface Treatment\u003c\/td\u003e\n\u003ctd\u003ePassivated (Bright \/ 洗白钝化)\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMagnetic Properties\u003c\/td\u003e\n\u003ctd\u003eSlightly magnetic (work-hardened)\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-196°C to +800°C (intermittent)\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eNote: A2 stainless steel set screws are not hardened to the same level as alloy steel grades. A2 is optimized for corrosion resistance. The cone point geometry compensates for lower tip hardness by seating into a pre-drilled conical recess rather than relying solely on tip penetration.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eCone Point Geometry — Design \u0026amp; Function\u003c\/h2\u003e\n\u003cp\u003eThe cone point is a sharp, conical tip that distinguishes DIN 914 \/ ISO 4027 from other set screw point types. Key characteristics:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded angle:\u003c\/strong\u003e 90° for thread sizes M1.6 to M8; 120° for M10 and above (per DIN 914).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePermanent locking:\u003c\/strong\u003e The cone tip seats into a matching conical indent or drilled recess on the shaft, creating a positive, self-centering mechanical lock that resists both rotation and axial displacement.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum holding force:\u003c\/strong\u003e Among all set screw point types, the cone point delivers the highest axial and torsional holding force when used with a matching shaft recess.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-centering:\u003c\/strong\u003e The conical geometry automatically centers the screw on the shaft recess, ensuring precise and repeatable positioning.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVibration resistance:\u003c\/strong\u003e Excellent resistance to loosening under dynamic, cyclic, and shock loads due to the positive mechanical interlock.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePermanent installation:\u003c\/strong\u003e Best suited for applications where the set screw position is fixed and frequent repositioning is not required, as the cone point creates a permanent indent in the shaft.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eCone Point vs. Other Point Types — Selection Guide\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003ePoint Type\u003c\/th\u003e\n\u003cth\u003eHolding Force\u003c\/th\u003e\n\u003cth\u003eShaft Damage\u003c\/th\u003e\n\u003cth\u003eRepositionable\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCone Point (DIN 914)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e✅ Maximum\u003c\/td\u003e\n\u003ctd\u003eHigh (permanent indent)\u003c\/td\u003e\n\u003ctd\u003e❌ No\u003c\/td\u003e\n\u003ctd\u003ePermanent locking, high-load, precision positioning\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCup Point (DIN 916)\u003c\/td\u003e\n\u003ctd\u003e✅ High\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003ctd\u003e⚠️ Limited\u003c\/td\u003e\n\u003ctd\u003eGeneral shaft locking, vibration resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFlat Point (DIN 913)\u003c\/td\u003e\n\u003ctd\u003e⚠️ Moderate\u003c\/td\u003e\n\u003ctd\u003eMinimal\u003c\/td\u003e\n\u003ctd\u003e✅ Yes\u003c\/td\u003e\n\u003ctd\u003eSoft shafts, frequent adjustment\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOval Point (DIN 915)\u003c\/td\u003e\n\u003ctd\u003e⚠️ Moderate\u003c\/td\u003e\n\u003ctd\u003eMinimal\u003c\/td\u003e\n\u003ctd\u003e✅ Yes\u003c\/td\u003e\n\u003ctd\u003eAdjustment screws, delicate surfaces\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eSurface Treatment: Passivation (洗白钝化)\u003c\/h2\u003e\n\u003cp\u003eAll FULLERKREG A2 stainless set screws undergo passivation treatment after manufacturing:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProcess:\u003c\/strong\u003e Acid passivation (citric acid or nitric acid bath) removes free iron, machining residues, and surface contaminants from the stainless steel surface.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResult:\u003c\/strong\u003e A bright, clean, silver-white finish with a reinforced chromium oxide passive layer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBenefit:\u003c\/strong\u003e Significantly enhances corrosion resistance beyond the as-machined state, especially in chloride-containing and humid environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAppearance:\u003c\/strong\u003e Uniform bright metallic finish — no discoloration, no scale, no heat tint.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eDimensional Range\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eThread Size\u003c\/th\u003e\n\u003cth\u003ePitch (mm)\u003c\/th\u003e\n\u003cth\u003eSocket Size s (mm)\u003c\/th\u003e\n\u003cth\u003eCone Angle\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\u003e1.5\u003c\/td\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003ctd\u003e3 – 16\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\u003e2.0\u003c\/td\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003ctd\u003e4 – 20\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\u003e2.5\u003c\/td\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003ctd\u003e5 – 25\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\u003e3.0\u003c\/td\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003ctd\u003e6 – 30\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\u003e4.0\u003c\/td\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003ctd\u003e8 – 40\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\u003e5.0\u003c\/td\u003e\n\u003ctd\u003e120°\u003c\/td\u003e\n\u003ctd\u003e10 – 50\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\u003e6.0\u003c\/td\u003e\n\u003ctd\u003e120°\u003c\/td\u003e\n\u003ctd\u003e12 – 60\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\u003e8.0\u003c\/td\u003e\n\u003ctd\u003e120°\u003c\/td\u003e\n\u003ctd\u003e16 – 80\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\u003e10.0\u003c\/td\u003e\n\u003ctd\u003e120°\u003c\/td\u003e\n\u003ctd\u003e20 – 100\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\u003e12.0\u003c\/td\u003e\n\u003ctd\u003e120°\u003c\/td\u003e\n\u003ctd\u003e25 – 120\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eCustom lengths and special configurations available upon request. Contact FULLERKREG for non-standard requirements.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eCorrosion Resistance of A2 Stainless Steel\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExcellent resistance\u003c\/strong\u003e to atmospheric corrosion, fresh water, mild acids, and alkalis.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGood resistance\u003c\/strong\u003e to food acids, dilute organic acids, and many chemical environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModerate resistance\u003c\/strong\u003e to chloride environments — suitable for light marine exposure and coastal atmospheres.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot recommended\u003c\/strong\u003e for direct seawater immersion or high-chloride splash zones — for these environments, A4 (SUS316) is recommended.\u003c\/li\u003e\n  \u003cli\u003ePassivation further enhances the natural chromium oxide passive layer, improving resistance to pitting and crevice corrosion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePermanent shaft-to-hub locking in corrosive or washdown environments\u003c\/li\u003e\n  \u003cli\u003ePrecision positioning with matching conical shaft recesses\u003c\/li\u003e\n  \u003cli\u003eFood processing and beverage equipment (FDA-compatible environments)\u003c\/li\u003e\n  \u003cli\u003ePharmaceutical and medical device manufacturing\u003c\/li\u003e\n  \u003cli\u003eChemical processing equipment — pumps, valves, agitators\u003c\/li\u003e\n  \u003cli\u003eMarine and coastal outdoor installations (light exposure)\u003c\/li\u003e\n  \u003cli\u003eLocking of pulleys, gears, couplings, and collars on stainless shafts\u003c\/li\u003e\n  \u003cli\u003eSemiconductor and cleanroom equipment\u003c\/li\u003e\n  \u003cli\u003eArchitectural and decorative hardware requiring a bright finish\u003c\/li\u003e\n  \u003cli\u003eGeneral industrial machinery in humid or wet environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eInstallation Guidelines\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eUse the correct hex key (Allen wrench) matching the socket size — refer to the dimensional table above.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShaft preparation:\u003c\/strong\u003e For maximum holding force, drill a matching conical recess (90° or 120° as appropriate) in the shaft at the desired locking position before installation.\u003c\/li\u003e\n  \u003cli\u003eEnsure the shaft and bore are clean and free of oil or debris before installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnti-galling precaution (critical for stainless):\u003c\/strong\u003e A2 stainless steel is susceptible to galling (cold welding \/ thread seizure). Always apply a nickel-based or molybdenum disulfide (MoS₂) anti-seize compound to the threads before tightening.\u003c\/li\u003e\n  \u003cli\u003eTighten slowly and steadily using a calibrated torque wrench — avoid high-speed power tools which increase galling risk.\u003c\/li\u003e\n  \u003cli\u003eFor vibration-critical applications, apply a stainless-compatible thread-locking compound in addition to the conical shaft recess.\u003c\/li\u003e\n  \u003cli\u003eDo not exceed the rated tightening torque for the thread size and A2-70 grade.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNote on permanence:\u003c\/strong\u003e The cone point creates a permanent indent in the shaft. Plan the installation position carefully before final tightening.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensional Inspection:\u003c\/strong\u003e 100% thread gauge inspection per ISO 965-1 (6g tolerance); cone angle verification per DIN 914\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Verification:\u003c\/strong\u003e PMI (Positive Material Identification) \/ spectrometer analysis confirming SUS304 composition\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness Testing:\u003c\/strong\u003e Vickers hardness test per ISO 3506-3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTensile \/ Proof Load Testing:\u003c\/strong\u003e Per ISO 3506-3 (A2-70)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSalt Spray Test:\u003c\/strong\u003e Corrosion resistance verification post-passivation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSocket Torque Test:\u003c\/strong\u003e Drive socket integrity verification\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLot Traceability:\u003c\/strong\u003e Full material and process traceability per batch\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003ePackaging Options\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBulk (polybag or carton) — standard for wholesale orders\u003c\/li\u003e\n  \u003cli\u003eSmall box (labeled, per size) — available for mixed or sample orders\u003c\/li\u003e\n  \u003cli\u003eCustom packaging — available for OEM and private-label customers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eOrdering Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e Unit price per piece (USD), not per thousand. Contact us for volume pricing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomer Base:\u003c\/strong\u003e B2B wholesale only. We do not serve retail \/ B2C customers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrder Method:\u003c\/strong\u003e All orders are placed offline. Online prices are for reference and inquiry only. Please contact us via email to place orders.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMOQ:\u003c\/strong\u003e Varies by size — contact FULLERKREG for minimum order quantities.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLead Time (Small Batch):\u003c\/strong\u003e Approx. 30 days, delivered DDP.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLead Time (Large Volume):\u003c\/strong\u003e FOB Shanghai; other Incoterms negotiable.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustom Orders:\u003c\/strong\u003e Non-standard lengths, special configurations, or OEM requirements available upon request.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between DIN 914 and ISO 4027?\u003c\/strong\u003e\u003cbr\u003e\nA: DIN 914 is the German standard; ISO 4027 is the international equivalent. Both specify the same cone point set screw geometry and are dimensionally interchangeable. FULLERKREG products comply with both standards.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the cone angle of DIN 914 set screws?\u003c\/strong\u003e\u003cbr\u003e\nA: Per DIN 914, the included cone angle is 90° for thread sizes M1.6 to M8, and 120° for M10 and above. When drilling a matching shaft recess, use the corresponding countersink angle.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to drill a recess in the shaft for cone point set screws?\u003c\/strong\u003e\u003cbr\u003e\nA: For maximum holding force and precision positioning, a matching conical recess should be drilled in the shaft. The cone point can also be used against a flat shaft surface, but holding force will be reduced and shaft damage will be more pronounced.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between cone point (DIN 914) and cup point (DIN 916)?\u003c\/strong\u003e\u003cbr\u003e\nA: The cone point delivers higher axial and torsional holding force and is best for permanent, precision locking applications. The cup point is more versatile, causes less shaft damage, and allows limited repositioning. Choose cone point when maximum holding force and permanent positioning are required; choose cup point for general-purpose shaft locking.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\nA: A2 is the designation for austenitic stainless steel per ISO 3506-3, corresponding to SUS304 \/ 1.4301 (18% Chromium, 8–10% Nickel). It offers excellent general corrosion resistance and is the most widely used stainless steel grade for fasteners.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is passivation (洗白钝化)?\u003c\/strong\u003e\u003cbr\u003e\nA: Passivation is an acid treatment that removes free iron and surface contaminants, restoring and enhancing the natural chromium oxide passive layer on the stainless steel surface. The result is a bright, clean, silver-white finish with improved corrosion resistance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Why do stainless steel set screws sometimes seize during installation?\u003c\/strong\u003e\u003cbr\u003e\nA: Stainless steel is prone to galling (cold welding) due to its tendency to work-harden under friction. Always apply an anti-seize compound to the threads and tighten slowly with a calibrated torque wrench to prevent seizure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do you offer custom lengths or thread pitches?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. FULLERKREG can produce non-standard configurations. Please contact us with your technical requirements.\u003c\/p\u003e","products":[],"url":"https:\/\/www.fullerkr.com\/collections\/din-914-iso-4027-socket-set-screw-with-cone-point-a2-stainless.oembed","provider":"Fullerkreg Fasteners","version":"1.0","type":"link"}