Socket Head Cap Screws

Socket Head Cap Screws Supplier

Socket head cap screws (also known as allen screw) are fasteners with a hexagonal internal groove in the center of the head, which are rotated using a hexagonal socket or hexagonal wrench, and are compact in design, with a stronger tightening torque than slotted or cross-slotted screw fasteners, and are generally used in places where space limitations prevent the use of hexagon socket head cap screws. It does not require a nut fit (this form of connection becomes a screw connection, which is also a removable connection, and can also be used with a nut fit for a tight connection between two parts with through holes).

  • Conforms to standards
  • Fast shipment
  • Customizable
  • Complete specifications
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Specifications

  • Diameter: M3 to M64.
  • Length: 3mm to 690mm.
  • Threads: UNC thread, UNF thread, ISO thread, Metric thread, Imperial thread, Full thread, Half thread,Coarse thread, Fine thread.
  • Strength grade: 4.8 grade, 6.8 grade,,8.8 grade, 10.9 grade, 12.9 grade; A2-70, A2-80, A4-70, A4-80.
  • Standard: DIN, ISO, JIS, BS, ASME, GB
  • Packaging: Small Box + Carton +Pallet,Custom Packaging Service.
hex socket cap screw dimensions

Materials

  • Carbon Steel
  • Stainless Steel
  • Alloy Steel
  • Brass
  • Aluminum Alloy
  • Titanium alloy
  • Plastic

Surface Processing

We work with more than 10 surface processing manufacturers and can provide any surface processing services.

  • Zinc plating
  • Black oxidation
  • Nickel plating
  • Copper plating
  • Passivation
  • Polishing
  • Dacromet
  • Powder spraying

Standards

DIN 912ISO 4762DIN 7500JIS B 1176NF E25-125BS 4168-1
DIN 6912ISO 12474DIN 7984JIS B 1194NF E25-146BS 2470
DIN 7964EISO 21269DIN 12474JIS B 1174NF E27-191BS 4168-8
DIN 6929ISO 10642DIN 9841JIS B 1175UNI 5933GOST 28962
DIN 7991ISO 7380ASME/ANSI B18.3.5MGB 70UNI 9327GOST 11738
DIN 10642ASME/ANSI B18.3.4MASME/ANSI B18.3.3MASME/ANSI B18.3.1MGB/T 5281UNI 5931

Hexagon Socket Head Cap Screw Types

51Fasteners supplies a full range of high quality Hexagon Socket Head Cap Screws, including: Countersunk Head Cap Screws, Cylindrical Head Cap Screws, Pan Head Cap Screws and more.

cylindrical head hex socket cap screw

Cylindrical Head Socket Cap Screw

The head is cylindrical with an internal hexagonal groove. It is also called a cup-head socket head screw.

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countersunk flat head hex socket screw

Countersunk Flat Socket Cap Screw

The head is tapered, also known as flat head screws or countersunk bolt, the head of the screw is flush with the surface of the part or slightly below the surface after installation.

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round head socket screw

Button Head Socket Cap Screw

The head design of the button socket cap screw (also called pan head, round head, mushroom head hexa socket cap screw) provides a larger force-bearing area.

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flange hex socket screw

Flanged Head Socket Cap Screw

The flange head design increases the contact area, effectively reduces the indentation of the connected parts and enhances the anti-loosening effect.

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Applications

  • Mechanical Manufacturing
  • Electronics Industry
  • Furniture Manufacturing
  • Automotive & Motorcycle
  • Aerospace
  • Shipbuilding

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