2-56 x 7/8 Alloy Steel Button Head Socket Cap Screw gives equipment builders a rounded button-head form for visible or frequently handled fastening points. The alloy steel construction is used on industrial equipment where exposed hardware benefits from a rounded head and socket drive.

This configuration is practical for robotics and packaging machinery where internal hex drive access supports repeatable assembly work in tight spaces. It also works in precision assemblies and repair work when buyers can match the listed thread and length to drawings or service records. Unlike a standard socket head cap screw, the button head emphasizes a lower rounded profile and broader exposed head for applications that benefit from that geometry.

For engineering layouts using 2-56 thread and 7/8 in. length, the reference head diameter is 0.154-0.164 in. and the head height is 0.038-0.046 in. The nominal body diameter and hex-key information below keep fit review, tool selection, and replacement ordering tied to verified reference values.

Technical Highlights

• Material: Alloy Steel
• Thread Size: 2-56
• Length: 7/8 in.
• Nominal Body Diameter: #2 (.086 in.)
• Head Diameter: 0.154-0.164 in.
• Head Height: 0.038-0.046 in.
• Hex-Key Size: 0.050 in.
• Drive Type: Internal Hex

Reference dimensions may vary slightly by manufacturer.

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