1/4-20 x 4 3/8 Alloy Steel Socket Head Cap Screw is intended for mechanical assemblies that specify an exact nonstandard length rather than a common catalog length. It is useful for legacy equipment, jigs, and maintenance replacement points, especially when the 1/4-20 thread and 4 3/8 in. length must match existing parts rather than a nearby standard size. Use the technical highlights to confirm socket tooling and head geometry before placing the item into a work order. This hard-to-find size is listed for buyers who need a searchable exact-size socket screw instead of a substituted length. Use the callout and highlights to confirm the part before requesting pricing and availability. Technical Highlights Material: Alloy Steel Thread: 1/4-20 UNC Length: 4 3/8 in. Nominal Body Diameter: .250 in. Head Diameter: 0.365 in. min / 0.375 in. max Head Height: 0.244 in. min / 0.250 in. max Hex Key Size: 3/16 Drive Type: Internal hex socket Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.