3/8-16 x 1/4 Brass Button Head Socket Cap Screw fits applications where a rounded low-profile head and non-ferrous construction are both part of the design requirement. The button-head geometry is chosen for reduced head projection and a smooth exposed appearance while keeping the head visible and accessible. Engineers choose brass here for electrical conductivity, non-magnetic behavior, and non-ferrous construction rather than high-strength structural loading.

Appropriate uses include maintenance work and assembly operations, where the exact thread and length help match drawings, repair lists, and existing brass hardware. It can also fit architectural hardware and commercial brass components, where the rounded head provides a finished appearance on visible covers and trim. The internal hex drive supports socket-key installation in compact equipment without relying on an external wrenching surface.

For the 3/8-16 thread and 1/4 in. length, the reference head diameter is 0.636-0.656 in. and the head height is 0.185-0.199 in. Use the verified dimensions below when checking head projection, socket access, and replacement fit.

Technical Highlights

• Material: Brass
• Thread Size: 3/8-16
• Length: 1/4 in.
• Nominal Body Diameter: 3/8 (.375 in.)
• Head Diameter: 0.636-0.656 in.
• Head Height: 0.185-0.199 in.
• Hex-Key Size: 7/32 in.
• Drive Type: Internal Hex

Reference dimensions may vary slightly by manufacturer.