3/8-16 x 3 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. Its countersunk head is useful when designers want a minimal surface profile while retaining internal hex access for installation and service work.

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 3/8-16 thread and 3 1/2 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: 3/8-16
• Length: 3 1/2 in.
• Nominal Body Diameter (B): 0.375 in.
• Head Diameter (A): 0.720-0.781 in.
• Head Height: 0.234 in.
• Hex Socket Size (J): 7/32 in.
• Minimum Key Engagement (T): 0.159 in.
• Drive Type: Internal Hex

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