5/16 -18 x 7 1/2 6 THD UNDER-SIZED Coarse Thread A307 Grade A Carriage Bolt Low Carbon Steel Plain Finish Pk 50

PRODUCT SPECIFICATIONS Part #: 0000-121515 Fastener Type: Carriage Bolt Size Description: 5/16 -18 x 7 1/2 6 THD UNDER-SIZED Diameter/Nominal Size: 5/16 Length: 7 1/2 Thread Pitch: 18 Thread Pitch Type: Coarse Thread Direction: Right Thread Coverage: 6 THD System of Measurement: Inch Grade: A (2) Material: Low Carbon Steel Finish: Plain Finish (No Plating) Standards Met: A307 Average Piece Weight: 0.1395500 lbs. Carriage bolts are Ideal for use in square holes in wood-to-wood and wood-to-metal fastening; bolt has a square neck that prevents it from turning once screwed in. When trying to determine the length of the item measure from just under the head of the bolt.