12-28 x 2 3/4 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. This size keeps the specified 12-28 thread and 2 3/4 in. length visible for matching drawings and maintenance records. Selected for tooling, production lines, and packaging machinery, it gives maintenance teams a searchable alloy steel socket screw callout. Verified head dimensions and hex key size help engineering departments check fit before ordering. This keeps the listing focused on the fastener geometry rather than broad catalog language. Technical Highlights Material: Alloy Steel Thread: 12-28 Length: 2 3/4 in. Nominal Body Diameter: .215 in. Head Diameter: 0.337 in. min / 0.344 in. max Head Height: 0.211 in. min / 0.215 in. max Hex Key Size: 5/32 Drive Type: Internal hex socket Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.