4-40 x 1/4 Brass Socket Head Cap Screw is specified where a non-ferrous internal-hex fastener is preferred for electrical assemblies or precision hardware. The brass material is appropriate for compatible low-strength joints where conductivity and appearance are design considerations. Hex-key installation helps technicians reach fastening points inside covers, panels, brackets, fixtures, and housings. Typical placements include electrical assemblies, control panels, and switchgear hardware where brass material properties and socket access are useful. Engineering departments can evaluate head clearance, drive access, and brass material compatibility before releasing the assembly. Technical Highlights: Material: Brass; Thread: 4-40 UNC; Length: 1/4 in.; Nominal Body Diameter: 0.112 in.; Head Diameter: 0.183 in. max / 0.176 in. min; Head Height: 0.112 in. max / 0.108 in. min; Hex Key Size: 3/32; Drive Type: internal hex. Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.