Allen Cap Socket Head Screw

Allen Cap Screws (Socket Head)

Our Socket Cap Screws, commonly known as Allen Caps, feature a cylindrical head with an internal hexagonal drive. Designed for high-torque tightening with an Allen wrench or hex key, they are the preferred choice for applications with limited space where a standard external wrench cannot fit. Their sleek, low-profile design combined with high tensile strength makes them ideal for precision machinery, automotive engines, and die-casting assemblies.

Technical Specifications

Head Style Cylindrical Head with Internal Hex Drive
Drive Type Hex Socket (Requires Allen Key / Hex Wrench)
Thread Type Metric Coarse, Metric Fine, UNC, UNF (Fully or Partially Threaded)
Size Range M3 to M64 | 1/8” to 2-1/2” Diameter
Lengths 10 mm to 1000 mm and above
Standards DIN 912, ISO 4762, ASME B18.3, ASTM A574
Materials High Tensile Alloy Steel (12.9), Stainless Steel (304, 316), Brass, Inconel
Finish Black Oxide (Self Color), Zinc Plated, PTFE Coated, Hot-Dip Galvanized

Key Features & Applications

  • High Torque Transmission
  • Compact / Tight Space Installation
  • Precision Machinery Assembly
  • High Tensile Strength (Grade 12.9)
  • Automotive Engine Components
  • Aesthetic & Clean Appearance
  • Machine Tool Fixtures
  • Die & Mold Manufacturing
back top