Socket Head Cap Screws Alloy Steel 1-3/8-12 X 5-1/2 are high-strength fasteners designed for rigid machine assemblies and demanding industrial use. The 1-3/8-12 size denotes a large-diameter, fine-pitched thread paired with a 5-1/2 inch long shank, providing secure clamping and reliable torque transfer in precision equipment.

Constructed from alloy steel, these socket head cap screws deliver exceptional strength, durability, and fatigue resistance under load. The flush, low-profile head profile allows for compact assemblies and clean tool access, making them ideal for applications where space is at a premium and performance is non-negotiable.

Key Specifications

• Head style: Socket Head Cap
• Material: Alloy Steel
• Thread size: 1-3/8-12
• Length: 5-1/2 in

Applications

These high-strength socket head cap screws are well-suited for machine tool assemblies, automotive components, robotics, hydraulic and pneumatic systems, and other precision equipment where a secure, flush profile is essential.

Why choose these fasteners

• Designed for high-load, high-demand environments requiring durable alloy steel construction
• Precise thread engagement with standard 1-3/8-12 size for dependable fastening
• Socket drive enables easy installation and consistent torque without slippage
• Suitable for repeat disassembly and reassembly when tightened with proper tools