1-3/8-12 X 5-1/2″ Socket Cap Screws Hex Socket Drive Alloy Steel Last Chance

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