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Square Head Bolts

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Square Head Bolts are threaded fasteners with a square shaped head for easy wrench installation and were widely used prior to the development of hex head bolts.
A307 Grade A Square Head Bolt, Galvanized (Inch)
A307 Grade A Square Head Bolt, Galvanized (Inch)
A307 Grade A Square Head Bolt, Plain (Inch)
A307 Grade A Square Head Bolt, Plain (Inch)
A307 Grade A Square Head Bolt, Zinc (Inch)
A307 Grade A Square Head Bolt, Zinc (Inch)

Square Head Bolts offer a large bearing area for positive gripping with an open or adjustable wrench. Length is measured from under the head. Head width or wrench size is measured across the flats.
 



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