1/4-20 x 2 1/2 Flat Socket Cap Screw 18-8 (A2) Stainless Steel

1/4-20 x 2 1/2 Flat Socket Cap Screw 18-8 (A2) Stainless Steel . 18-8 (A2) Stainless Steel Flat Socket Head Cap Screws from Brighton Best. Hardness of RC 38-43, meets or exceeds ASTM F879. Flat Head Socket Cap Screws are used for flush mounting of sections, usually where one part slides over another part or one part is mounted on another.