Hassle-Free Returns 3/8-16 X 1-1/4″ Socket Cap Screws Flat Head Hex Socket Drive Alloy Steel Thermal Black Oxide (100 / Pkg.)

Cap Screws Flat Socket Alloy Thermal Black Oxide 3/8-16 X 1 1/4 are high-strength fasteners designed for demanding mechanical assemblies that require a low-profile, secure fit.

These cap screws feature an alloy construction for strong, durable performance and a thermal black oxide finish that protects against corrosion and wear while delivering a subdued, non-reflective appearance.

Specifications: Thread size 3/8-16; Length 1 1/4 in; Head type: flat socket head; Drive: internal hex; Material: alloy; Finish: thermal black oxide.

Key benefits include a flat, low-profile head that sits flush under load, robust clamping force, and corrosion resistance suitable for harsh environments. The internal hex drive makes installation and removal quick and tool-friendly.

Commonly used in automotive, industrial machinery, equipment assemblies, and general mechanical construction where reliable fasteners and a clean finish are essential.

To install, pair these cap screws with compatible nuts and washers and torque according to your specific application requirements. This 3/8-16 thread size comes in a 1 1/4 in length with an alloy body and thermal black oxide finish.