Cold Headers
5514 N. Elston Ave Chicago, IL 60630 Phone: 1-773-775-7900 Fax: 1-773-775-0779 Email:sales@coldheaders.com
Website: www.coldheaders.com Working Hours: Mon - Fri 8:00am - 4:30pm CST
Saturday - Sunday CLOSED If you have any questions, please call or email us.
1/2-20 x 5 1/2 Alloy Steel Socket Head Cap Screw is commonly used where an Allen-style socket drive is preferred over external-wrench hardware in confined equipment layouts. The 1/2-20 thread and 5 1/2 in. length support matching drawings and maintenance records in repair inventories. The screw is useful across machine tools, production lines, and precision assemblies when a compact internal-hex fastener is required. The socket head form provides a cylindrical head suited to counterbores and recessed mounting pockets. This keeps the listing focused on the fastener geometry rather than broad catalog language. Technical Highlights Material: Alloy Steel Thread: 1/2-20 Length: 5 1/2 in. Nominal Body Diameter: .500 in. Head Diameter: 0.735 in. min / 0.750 in. max Head Height: 0.492 in. min / 0.500 in. max Hex Key Size: 3/8 Drive Type: Internal hex socket Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.