1 1/2-6 x 4 1/2 Alloy Steel Socket Head Cap Screw provides a strength-focused alloy steel socket cap screw option for mechanical assemblies requiring this exact size. The 1 1/2-6 thread and 4 1/2 in. length support replacement sourcing without changing the specified size in machine frames and brackets. Common uses include maintenance repair, material handling, and fixture design, where internal hex installation helps keep the joint accessible. Alloy steel supports strength-focused fastening where clamp load and repeatable assembly are important. This keeps the listing focused on the fastener geometry rather than broad catalog language. Technical Highlights Material: Alloy Steel Thread: 1 1/2-6 Length: 4 1/2 in. Nominal Body Diameter: 1.500 in. Head Diameter: 2.224 in. min / 2.250 in. max Head Height: 1.485 in. min / 1.500 in. max Hex Key Size: 1 Drive Type: Internal hex socket Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.