6-40 x 1 1/2 Alloy Steel Flat Head Socket Cap Screw is used where the screw head must nest into an 82-degree countersink instead of standing proud of the work surface. The internal hex drive allows installation from above the workpiece, which is helpful in compact equipment where external wrench clearance is limited.

Maintenance teams use this configuration when replacing flush socket screws on guarding, covers, conveyor hardware, and other serviceable equipment. The alloy steel material keeps the product aligned with machine-building, tooling, and industrial repair requirements that specify this fastener family. The internal hex drive supports top-side socket engagement where side access is limited.

For this 6-40 thread and 1 1/2 in. length, the verified head data helps engineers compare countersink depth, head clearance, and tooling access. Cold Headers helps buyers match thread, length, and head style when replacement hardware must align with existing countersunk components.

Technical Highlights

• Material: Alloy Steel
• Thread Size: 6-40
• Length: 1 1/2 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.