5/16 -18 x 2 1/2 (FT) Coarse Thread Grade 5 Carriage Bolt Medium Carbon Steel Black Oxide Pk 400

PRODUCT SPECIFICATIONS Part #: 0000-116557 Fastener Type: Carriage Bolt Size Description: 5/16 -18 x 2 1/2 (FT) Diameter/Nominal Size: 5/16 Length: 2 1/2 Thread Pitch: 18 Thread Pitch Type: Coarse Thread Direction: Right Thread Coverage: Full System of Measurement: Inch Grade: 5 Material: Medium Carbon Steel Finish: Thermal Black Oxide Average Piece Weight: 0.0544100 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.