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Inch Hex & Square Head Machine Bolts

Looking for Hex & Square Head Machine Bolts?

We carry Inch Hex & Square Head Machine Bolts manufactured to ASME B18.2.1 standards.

Stock sizes include: 1/4-20 through 3/4-10 (Hex) & 1-8 through 1-1/4-7 (Square) in Steel Hot Dip Galvanized (Hex) & Steel Plain (Square).

Scroll down to find your size, or search by part number.

Add to Cart and buy online or email us for a custom quote.  Most popular products are in stock and ship within 24 hours.

Can't find what you're looking for? Email us at [email protected] for a custom quote. "We have the right screw for you" is our motto after all!
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5/16-18 X 1-1/2 Hex Machine Bolt Steel 5/16-18 X 1-1/2 Hex Machine Bolt Steel Hot Dip Galvanized [1000 PER BOX]
Price per Box: $221.09 / Quantity Discounts Available
5/16-18 X 2-1/2 Hex Machine Bolt Steel 5/16-18 X 2-1/2 Hex Machine Bolt Steel Hot Dip Galvanized [600 PER BOX]
Price per Box: $213.86 / Quantity Discounts Available
5/16-18 X 3-1/2 Hex Machine Bolt Steel 5/16-18 X 3-1/2 Hex Machine Bolt Steel Hot Dip Galvanized [450 PER BOX]
Price per Box: $208.94 / Quantity Discounts Available
5/16-18 X 3/4 Hex Machine Bolt Steel 5/16-18 X 3/4 Hex Machine Bolt Steel Hot Dip Galvanized [1500 PER BOX]
Price per Box: $275.63 / Quantity Discounts Available
5/16-18 X 4-1/2 Hex Machine Bolt Steel 5/16-18 X 4-1/2 Hex Machine Bolt Steel Hot Dip Galvanized [300 PER BOX]
Price per Box: $209.51 / Quantity Discounts Available
5/16-18 X 5 Hex Machine Bolt Steel 5/16-18 X 5 Hex Machine Bolt Steel Hot Dip Galvanized [250 PER BOX]
Price per Box: $161.80 / Quantity Discounts Available
5/16-18 X 1-1/4 Square Head Machine Bolt Steel 5/16-18 X 1-1/4 Square Head Machine Bolt Steel Plain [700 PER BOX]
Price per Box: $128.84 / Quantity Discounts Available
5/16-18 X 1-1/2 Square Head Machine Bolt Steel 5/16-18 X 1-1/2 Square Head Machine Bolt Steel Plain [600 PER BOX]
Price per Box: $187.35 / Quantity Discounts Available
5/16-18 X 1 Square Head Machine Bolt Steel 5/16-18 X 1 Square Head Machine Bolt Steel Plain [800 PER BOX]
Price per Box: $120.80 / Quantity Discounts Available
5/16-18 X 2-1/2 Square Head Machine Bolt Steel 5/16-18 X 2-1/2 Square Head Machine Bolt Steel Plain [500 PER BOX]
Price per Box: $244.47 / Quantity Discounts Available
5/16-18 X 2 Square Head Machine Bolt Steel 5/16-18 X 2 Square Head Machine Bolt Steel Plain [500 PER BOX]
Price per Box: $181.78 / Quantity Discounts Available
5/16-18 X 3/4 Square Head Machine Bolt Steel 5/16-18 X 3/4 Square Head Machine Bolt Steel Plain [800 PER BOX]
Price per Box: $132.04 / Quantity Discounts Available
5/16-18 X 3 Square Head Machine Bolt Steel 5/16-18 X 3 Square Head Machine Bolt Steel Plain [400 PER BOX]
Price per Box: $249.79 / Quantity Discounts Available
5/16-18 X 4 Square Head Machine Bolt Steel 5/16-18 X 4 Square Head Machine Bolt Steel Plain [300 PER BOX]
Price per Box: $210.39 / Quantity Discounts Available
   
 
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