4-40 x 1/4 Brass Flat Head Socket Cap Screw is a brass flat head socket cap screw for assemblies that use a prepared countersink to reduce surface projection.
The 82-degree flat head is intended for a properly prepared countersunk hole; final seating depends on the mating countersink and the surrounding assembly geometry. Typical uses include electrical enclosures, control panels, and communication equipment, where reduced projection, socket-drive access, and a clean exposed surface can matter.
Brass may be specified for nonferrous construction, electrical conductivity, distinctive appearance, and general resistance to ordinary atmospheric corrosion. For this 4-40 thread and 1/4 in. length, review the body diameter, head diameter, head height, hex socket size, and key engagement before approving the fastener for a countersunk assembly. Cold Headers has supplied specialty industrial socket fasteners since 1962 and supports buyers looking for exact brass socket screw sizes.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
