Socket Head Cap , 1/4-20 x 3 1/4", Stainless Steel 18-8, Hex Socket (Quantity: 100) Coarse Thread, 1/4 inch Hexagonal Allen Bolt, Length: 3 1/4 inch, Partial Thread$$Hardware

Thread: Coarse / Partial Thread / 18-8 Recommended Hex Socket Allen Key Wrench: 3/16 Ideal for precision assembly work with close tolerances and applications needing a well tooled appearance Supplies greater tensile strength than equivalent sizes of Grade 5 or Grade 8 hex head cap screws while requiring less surface area or counterbore since the fastener is internally wrenched