PICTURES ARE REPRESENTATIVE OF ITEM, BUT ARE NOT OF THE ACTUAL ITEM. Product dimensions, finish, head markings, thread length, stamping shape or forging shape, etc., may differ from picture. Products are guaranteed to meet the specifications to which they are manufactured. Specifications allow for tolerances in dimension and shape, which can vary from lot to lot.

5/16"-18 x 2 1/2" A307 Grade A Square Head Machine Bolt Low Carbon Steel Hot Dip Galvanized

Price Per Piece: $0.3944

Part #:: 0000-117107
Minimum Purchase:: 50 pieces

PRODUCT SPECIFICATIONS (Part # 0000-117107)
Fastener Type:	Square Head Machine Bolt
Size Description:	5/16"-18 x 2 1/2"
Diameter/Nominal Size:	5/16"
Length:	2 1/2"
Wrench Size/Across Flats:	0.484-0.500"
Width Across Corners:	0.665-0.707"
Head Height:	0.186-0.220"
Thread Pitch:	18
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:	0.0595000 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.

Product Reviews

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5
Need matching nuts

Posted by Greg on 1st Dec 2018

So originally I gave this product a lower review because it has so much galvanized coating on them I couldn't get a regular nut on them without running a die over them. After that review ASMC contacted me and informed me that if I ordered the mating nuts with the heavy galvanized coating the threads in those nuts are over sized to allow for the extra coating on the bolts and nuts.

5/16"-18 x 2 1/2" A307 Grade A Square Head Machine Bolt Low Carbon Steel Hot Dip Galvanized

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Product Reviews

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Need matching nuts

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