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ISO 4014/DIN 931 Hexagonal Head Bolt

ISO 4014 Hex Bolt can be surface treated to variations of coatings. For instance, it can be coated with zinc by either electroplating or by immersing the fastener in zinc during hot dip galvanization. Other surface treating techniques include the finishes like auto black, dacromet, geomet and phosphate. Plating the alloy can also be utilized to increase the ISO 4014 bolt weight. DIN 931 ISO 4014 bolt are externally threaded fasteners with a hexagonal washer faced head and a chamfered tip to facilitate mating with an internally threaded component.  Check more about Din931 Hex Head Bolt Specifications:

ISO 4014/DIN 931 Hexagonal Head Bolt Available:

StandardMaterailClassDiameterLength/mmThreadSurface Treatment
ISO401440CR/35CRMO8.8/10.9/12.9M2460-500coarse threadBlack/ Dacromet / electro galvanizing
ISO401440CR/35CRMO8.8/10.9/12.9M2770-500coarse threadBlack/ Dacromet / electro galvanizing
ISO401440CR/35CRMO8.8/10.9/12.9M3080-500coarse threadBlack/ Dacromet / electro galvanizing
ISO401440CR/35CRMO/42CRMO8.8/10.9/12.9M3380-500coarse threadBlack/ Dacromet / electro galvanizing
ISO401442CRMO8.8/10.9/12.9M3690-720coarse threadBlack/ Dacromet / electro galvanizing
ISO401442CRMO8.8/10.9/12.9M39100-400(800)coarse threadBlack/ Dacromet / electro galvanizing
ISO401442CRMO8.8/10.9/12.9M42100-400(800)coarse threadBlack/ Dacromet / electro galvanizing
ISO401442CRMO8.8/10.9/12.9M45100-490(800)coarse threadBlack/ Dacromet / electro galvanizing
ISO401442CRMO8.8/10.9/12.9M48100-550(800)coarse threadBlack/ Dacromet / electro galvanizing
ISO401442CRMO8.8/10.9/12.9M56150-350(800)coarse threadBlack/ Dacromet / electro galvanizing
ISO401442CRMO8.8/10.9/12.9M64190-380(800)coarse threadBlack/ Dacromet / electro galvanizing
ISO401442CRMO8.8/10.9/12.9M72200-400coarse threadBlack/ Dacromet / electro galvanizing

ISO 4014/DIN 931 Bolt Product Specification

Thread Types of BoltUnified national fine (UNF),Unified national coarse (UNC), UNJC and UNJF threads, Unified national extra fine (UNEF), UNK threads, UNR threads, Constant-pitch threads.
ISO 4014 Bolts HeadSquare, Hex, Hex flange, Round, T-head , Flat & Triangular etc
ISO 4014 Bolts Neck typeSquare, Hex, Oval, Triangular & Knurled etc
ISO 4014 Bolts Drive type Slotted, Phil, Torx , Hex socket, & square slot etc
Application of Stainless Steel Hex Bolt Nuclear power, Wind tower, Automotive industry, Railway, Electronic,  Construction industry,
ISO 4014 Bolts DimensionsASME B18.6.3 *Exception: screws 6 inches and shorter are fully threaded.
Thread Requirements UNC & UNF, ASME B1.1, Class 2A (Fastenal will inspect and accept parts with a 1A no-go gauge)
FinishPer ASTM A380/A380M
Production technologyCold Forged
Manufacturing Process Cold Heading, Wire Drawing, Heat Treatment, Insert tapping, Inspection, Packing, Surface Plating
Surface treatment of Stainless steel Hex Bolt
  • Electroplating (color, blue, white, black zinc, Ni, Cr, tin, copper, silver)
  • Hot-dip galvanizing
  • Rust preventive oil
  • Sand blasting
  • Passivation
  • Anodizing
  • Black oxide coating
  • Polish
  • Heat-disposing

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