1/4-20 x 3/8 Brass Button Head Socket Cap Screw helps designers combine a compact rounded head profile with material properties useful for electrical and instrumentation work. Compared with taller head styles, the rounded button head can reduce snag potential on panels, covers, and handled surfaces. The material is often selected when conductivity, machinability, and appearance are more relevant than the strength profile of alloy steel.

Appropriate uses include laboratory equipment and commercial fixtures, where non-ferrous construction and a clean exposed head are often preferred over plain steel hardware. It can also fit laboratory equipment and commercial fixtures, where non-ferrous construction and a clean exposed head are often preferred over plain steel hardware. 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 3/8 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: 3/8 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.