1/2 -13 x 2 1/2 (FT) Coarse Thread Grade 5 Hex Flange Screw with Serration Medium Carbon Steel Zinc Plated Pk 50

PRODUCT SPECIFICATIONS Part #: 0000-123139 Fastener Type: Hex Flange Screw with Serration Size Description: 1/2 -13 x 2 1/2 (FT) Diameter/Nominal Size: 1/2 Length: 2 1/2 Thread Pitch: 13 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: 0.1920000 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.