Dewamarket 1/4×22-20 x 2 1/2×22 (FT) Coarse Thread Grade 5 Hex Flange Screw with Serration Medium Carbon Steel Zinc Plated Pk 50

PICTURES ARE REPRESENTATIVE OF ITEM, BUT ARE NOT OF THE ACTUAL ITEM. Product dimensions, finish, head markings, thread length, stamping shape or forging shape, etc., may differ from picture. Products are guaranteed to meet the specifications to which they are manufactured. Specifications allow for tolerances in dimension and shape, which can vary from lot to lot. PRODUCT SPECIFICATIONS Part #: 0000-114593 Fastener Type: Hex Flange Screw with Serration Size Description: 1/4″-20 x 2 1/2″ (FT) Diameter/Nominal Size: 1/4″ Length: 2 1/2″ Wrench Size/Across Flats: 0.367-0.375″ Width Across Corners: 0.409-0.433″ Head Height: 0.216-0.240″ Flange Diameter: 0.513-0.531″ Thread Pitch: 20 Thread Pitch Type: Coarse Thread Direction: Right Thread Coverage: Full System of Measurement: Inch Grade: 5 Material: Medium Carbon Steel Finish: Zinc Plated Head Type: Hex Flange Drive Type: External Hex Average Piece Weight: 0.0357100 lbs. Flange screws distributes holding pressure by having a circular shaped flange (external ridge) under the head so that the screw is less likely to come loose; non-serrated variety is also known as a frame bolt.