4-40 x 1 3/4 Brass Flat Head Socket Cap Screw is commonly specified when a brass socket-drive screw needs to seat into a flat-head countersink rather than stand proud of the surface.
The countersunk profile helps designers keep covers, plates, and enclosures cleaner than they would be with raised drive hardware. Typical uses include access covers, equipment panels, and interior equipment, where reduced projection, socket-drive access, and a clean exposed surface can matter.
Brass selection should reflect the mechanical, electrical, environmental, and dimensional requirements of the assembly rather than substitution for steel or stainless hardware. For this 4-40 thread and 1 3/4 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 supports quote and availability requests for unusual configurations where the exact thread, length, material, and head style matter.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
