1/4-20 x 1 Brass Button Head Socket Cap Screw gives buyers a defined brass button-head fastener for equipment where appearance, conductivity, and serviceable socket access matter. 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 precision instruments and panel hardware, where the broad bearing surface can help seat the head cleanly on covers or brackets. It can also fit precision instruments and panel hardware, where the broad bearing surface can help seat the head cleanly on covers or brackets. The internal hex drive supports socket-key installation in compact equipment without relying on an external wrenching surface.

For the 1/4-20 thread and 1 in. length, the reference head diameter is 0.419-0.437 in. and the head height is 0.122-0.132 in. Use the verified dimensions below when checking head projection, socket access, and replacement fit.

Technical Highlights

• Material: Brass
• Thread Size: 1/4-20
• Length: 1 in.
• Nominal Body Diameter: 1/4 (.250 in.)
• Head Diameter: 0.419-0.437 in.
• Head Height: 0.122-0.132 in.
• Hex-Key Size: 5/32 in.
• Drive Type: Internal Hex

Reference dimensions may vary slightly by manufacturer.