6-40 x 3/16 Alloy Steel Flat Head Socket Cap Screw gives engineers a socket-drive fastener for assemblies where surface projection has to be minimized. The flat-head profile is particularly useful around moving stock, operator contact areas, and assemblies where exposed screw heads should not project.

For fixture construction, machine covers, and production equipment, the 82-degree countersunk head helps avoid raised fastener edges without requiring external wrenching space. As an alloy steel socket fastener, it is selected for industrial assemblies that require a durable internal-hex screw where countersunk geometry and socket-drive access are important. The internal hex drive supports top-side socket engagement where side access is limited.

For this 6-40 thread and 3/16 in. length, the verified head data helps engineers compare countersink depth, head clearance, and tooling access. Cold Headers focuses on difficult-to-find socket products where exact thread, length, and head style matter to the application.

Technical Highlights

• Material: Alloy Steel
• Thread Size: 6-40
• Length: 3/16 in.
• Nominal Body Diameter (B): 0.138 in.
• Head Diameter (A): 0.263-0.307 in.
• Head Height: 0.097 in.
• Hex Socket Size (J): 5/64 in.
• Minimum Key Engagement (T): 0.066 in.
• Drive Type: Internal Hex

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.