5/8-11 x 2 1/4 Alloy Steel Flat Head Socket Cap Screw is built for 82-degree countersunk fastening where the installed head needs to sit even with the surrounding surface. The internal hex drive allows installation from above the workpiece, which is helpful in compact equipment where external wrench clearance is limited.

It fits panel installations, service covers, bracket assemblies, and precision machinery where maintenance access and surface clearance both matter. 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 5/8-11 thread and 2 1/4 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: 5/8-11
• Length: 2 1/4 in.
• Nominal Body Diameter (B): 0.625 in.
• Head Diameter (A): 1.112-1.188 in.
• Head Height: 0.324 in.
• Hex Socket Size (J): 3/8 in.
• Minimum Key Engagement (T): 0.220 in.
• Drive Type: Internal Hex

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