3/8 -16 x 4 A307 Grade A Square Head Machine Bolt Low Carbon Steel Hot Dip Galvanized Pk 50

PRODUCT SPECIFICATIONS Part #: 0000-121186 Fastener Type: Square Head Machine Bolt Size Description: 3/8 -16 x 4 Diameter/Nominal Size: 3/8 Length: 4 Thread Pitch: 16 Thread Direction: Right System of Measurement: Inch Grade: A (2) Material: Low Carbon Steel Finish: Hot Dip Galvanized Head Type: Square Drive Type: External Square Standards Met: A307 Average Piece Weight: 0.1306000 lbs. Square head bolts or square head machine bolts offer a large bearing area for positive gripping; primarily used nowadays for aesthetic projects that create a rustic look or to match existing fasteners; comes in both fully threaded and partially threaded pitches. Square head bolts are sometimes selected over hex heads because the head will fit neatly in a channel.