Square Head Bolts

Square head bolts, also called machine bolts are threaded to receive a nut. These decorative bolts come in smooth, hammered and pyramid head styles. To shop by head style click on the image below to see all available sizes in that head apperance.

Shop by Head Style

Shop by Diameter

#10
1/4"
5/16"
3/8"
1/2"
5/8"
3/4"
Larger Dia.
1/4" Dia. Smooth Square Head Bolt
1/4" Dia. Smooth Square Head Bolt from $2.00
1/4" Dia. Hammered Square Head Bolt
1/4" Dia. Hammered Square Head Bolt from $3.00
12 reviews
1/4" Dia. Pyramid Square Head Bolt
1/4" Dia. Pyramid Square Head Bolt from $4.00
6 reviews
1/4" Dia. Rustic Irregular Square Head Bolt
1/4" Dia. Rustic Irregular Square Head Bolt from $5.00
1 review
5/16" Dia. Smooth Square Head Bolt
5/16" Dia. Smooth Square Head Bolt from $2.00
5/16" Dia. Hammered Square Head Bolt
5/16" Dia. Hammered Square Head Bolt from $4.00
11 reviews
5/16" Dia. Pyramid Square Head Bolt
5/16" Dia. Pyramid Square Head Bolt from $4.00
3/8" Dia. Smooth Square Head Bolt
3/8" Dia. Smooth Square Head Bolt $3.00 from $2.00
2 reviews
Sale
3/8" Dia. Hammered Square Head Bolt
3/8" Dia. Hammered Square Head Bolt from $4.00
1 review
3/8" Dia. Pyramid Square Head Bolt
3/8" Dia. Pyramid Square Head Bolt from $4.00
7 reviews
3/8" Dia. Rustic Irregular Square Head Bolt
3/8" Dia. Rustic Irregular Square Head Bolt from $5.00
1/2" Dia. Smooth Square Head Bolt
1/2" Dia. Smooth Square Head Bolt $7.00 from $5.00
2 reviews
Sale
1/2" Dia. Hammered Square Head Bolts
1/2" Dia. Hammered Square Head Bolts $7.00 from $6.00
1 review
Sale
1/2" Dia. Pyramid Square Head Bolt
1/2" Dia. Pyramid Square Head Bolt from $7.00
1/2" Dia. Rustic Irregular Square Head Bolt
1/2" Dia. Rustic Irregular Square Head Bolt from $6.00
5/8" Smooth Square Head Bolt
5/8" Smooth Square Head Bolt $12.00 from $8.00
Sale
5/8" Hammered Square Head Bolt
5/8" Hammered Square Head Bolt $12.00 from $10.00
7 reviews
Sale
5/8" Pyramid Square Head Bolt
5/8" Pyramid Square Head Bolt $12.00 from $11.00
3 reviews
Sale
5/8" Dia. Rustic Irregular Square Head Bolt
5/8" Dia. Rustic Irregular Square Head Bolt from $7.00
3/4" Dia. Smooth Square Head Bolt
3/4" Dia. Smooth Square Head Bolt $22.00 from $14.00
1 review
Sale
3/4" Dia. Hammered Square Head Bolt
3/4" Dia. Hammered Square Head Bolt $22.00 from $15.00
Sale
3/4" Dia. Pyramid Square Head Bolt
3/4" Dia. Pyramid Square Head Bolt $22.00 from $16.00
Sale
3/4" Dia. Rustic Irregular Square Head Bolt
3/4" Dia. Rustic Irregular Square Head Bolt from $4.00
5/16" Dia. Rustic Irregular Square Head Bolt
5/16" Dia. Rustic Irregular Square Head Bolt from $4.00