Located in beautiful Phoenix Arizona , Superior Bolt & Nut Manufacturing Company,LLC is a leading supplier of high-quality, large diameter specialty fasteners. With manufacturing plants in the United States and abroad, Superior Bolt Mfg. has the experience and capacity to handle any size order.

Superior Bolt Mfg. takes pride in the quality of our products. All of our fasteners meet the highest quality standards from our ISO certified factories. In addition to ur custom manufacturing capabilities, Superior Bolt maintains a large inventory of bolt blanks that we can ship fast. These stock bolt blanks are ready to be cut and threaded to your specifications at a moments notice. We then can ship to you within 24-48 hours.

NEED SPECIALS? We can manufacture and ship fastener to your specifications in as little as TWO WEEKS!.

The best products are only as good as the people behind them. At Superior Bolt our experienced people set us apart from the competition. John Roach, Co-Founder of Superior Bolt Mfg, has over 40 years of experience in the fastener industry. Rest assured that if he can't help you with your fastener needs, he probably knows someone who can. So if you're looking for quality, low-cost and on-time delivery of your large diameter fasteners, call Superior Bolt...

...You'll be glad you did!

Our History

With more than 40 years experience in the fastener industry Superior Bolt in Phoenix,Arizona has grown to become one of the premier suppliers of high-quality,large diameter fasteners in the United States
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Manufacturing Capabilities

Our highly efficient in-house manufacturing capabilities give Superior Bolt the abiliity to fabricate and ship product in as little as 24 hours. We also offer fast turnaround on our plating and galvanizing services. If you need specials,our ISO certified factories can manufacture almost any size order to your specifications in as little as, two weeks!
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Headed Bolts

With hot forging capabilities from 1/2" diameter through 2-1/2" diameter Superior Bolt can manufacture a variety of headed bolts, in as little as, two weeks.


Our inventory of nuts include both domestic and imports.  All of our nuts are compatible for many grades of bolts in either plain or hot dip galvanized finish.

Finished Hex Nuts

Heavy Hex Nuts

Square Nuts


We carry an extensive line of washers compatible for the fasteners we manufacture and stock.

Standard Flat Washers

Hardened Round Washers

Lock Washers

Bent Bolts

Superior Bolt produces bent bolts with cut threads from 1/2" diameter through 2-1/2" diameter


Straight rods are produced with cut threads from 1/2" diameter through 6" diameter and reduced body roll thread rods from 3/8" diameter through 1" diameter in lengths up to 40 feet.

Anchor Rods

All Thread Rods

 Tie Rods

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