5/16-18 x 1 1/4 Alloy Steel Low Head Socket Cap Screw is commonly used when covers, guards, or tooling plates need a lower head than a conventional socket cap screw. The internal wrenching design is practical for tight equipment layouts where external wrench clearance is limited.

The fastener is appropriate for brackets, panels, and access covers, where the bearing surface and reduced profile can help keep exposed fasteners controlled. It remains useful in brackets, panels, and access covers, where the bearing surface and reduced profile can help keep exposed fasteners controlled. The reduced head height is the main selection reason when a taller socket head would conflict with nearby machine components.

For replacement sourcing, the thread size and length identify the fastener while the low-head dimensions confirm fit in the existing counterbore, cover, or guarded area.

Technical Highlights

• Material: Alloy Steel
• Thread Size: 5/16-18
• Length: 1 1/4 in.
• Basic Diameter: 0.312 in.
• Head Diameter: 0.431-0.437 in.
• Head Height: 0.152-0.158 in.
• Hex Socket Size: 5/32 in.
• Minimum Key Engagement: 0.110 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.