5/8-11 x 5 1/2 Coarse Thread Grade 8 Hex Flange Screw no Serration Alloy Steel Black Phosphate Pk 25

PRODUCT SPECIFICATIONS Part #: 0000-180849 Fastener Type: Hex Flange Screw no Serration Size Description: 5/8-11 x 5 1/2 Diameter/Nominal Size: 5/8 Length: 5 1/2 Thread Pitch: 11 Thread Pitch Type: Coarse Thread Direction: Right System of Measurement: Inch Grade: 8 Material: Alloy Steel Finish: Black Phosphate Head Type: Hex Flange Drive Type: External Hex Standards Met: SAE J429 Average Piece Weight: 0.5930000 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.