4-40 x 1 Brass Socket Head Cap Screw is selected for low-strength fastening applications where brass machinability and non-magnetic material properties are useful. Compared with alloy steel fasteners, brass is chosen for material behavior such as conductivity and non-magnetic performance rather than structural load capacity. The socket head form works well in counterbored or recessed locations where clean access from above simplifies installation. Typical placements include automation equipment, machine controls, and assembly operations where brass material properties and socket access are useful. Assembly operations can standardize this size where conductive or non-magnetic socket-drive hardware is required. Technical Highlights: Material: Brass; Thread: 4-40 UNC; Length: 1 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.