1"-8x3 1/4" Coarse Thread A307 Grade B Heavy Hex Bolt Low Carbon Steel Zinc Plated

PRODUCT SPECIFICATIONS (Part # 0000-257095)
Fastener Type:	Heavy Hex Bolt
Size Description:	1"-8x3 1/4"
Diameter/Nominal Size:	1"
Length:	3 1/4"
Thread Pitch:	8
Thread Pitch Type:	Coarse
Thread Direction:	Right
System of Measurement:	Inch
Grade:	B
Material:	Low Carbon Steel
Finish:	Zinc Plated
Head Type:	Hex
Drive Type:	External Hex
Standards Met:	A307
Average Piece Weight:	1.0500000 lbs.

Hexagonal heads and machine threads used with a nut or in a tapped hole; also known as or machine bolts. Hex bolts are similar to hex cap screws.

What is the difference between a hex cap screw and a hex bolt? A hex cap screw has tighter tolerances on the body dimensions and features a chamfered end and a washer face under the bolt head. A hex cap screw is often called a finished hex bolt. Hex bolts have a flat end and lack the washer face under the head. Hex bolts may have an undersize body in longer lengths.