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To produce hex bolts, manufacturers most commonly employ a method called cold-forming. A cold-forming machine usually has a series of three or four dies that progressively shape a metal blank into the final shape and dimensions that its manufacturer desires. Once the cold-forming operations are finished, a thread rolling machine cuts threads into the shaft of the unfinished hex bolt. Read More…

Hex Bolts Hex bolts, also called machine bolts, are cylindrical fasteners used to clamp two pieces of metal together. Hex bolts have hexagonal heads, thus the name, and machine threads for use with nuts or in a tapped hole.
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Leading Manufacturers

Fairfield, NJ  |  800-272-3673

Our company has a reputation for superior products, customer service, and dependability. All our fastener products are built to last, and we know that our customers appreciate our dedication to using the best materials and manufacturing techniques. If you would like to learn more about us, contact us by phone or email, or stop by our website today!

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Ford Fasteners, Inc. $$$

Jefferson, OH  |  888-536-3674

Our company has manufacturing experiences dating back to 1970 and over the years we have grown into an international supplier of bolts.

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Ken Forging $$$

Houston, TX  |  713-230-2500

Since 1938 TSP Manufacturing has been a leading manufacturer of fasteners and bolts. We are committed to creating the highest quality products and exceeding all expectations of our customers. Since 1997 TSP Manufacturing has been ISO 9002 certified. TSP has a wide variety of materials that are used for fasteners and bolts including but not limited to stainless steel, pH grades, bronze, and plastics. Contact us today to learn how we can help supply your company.

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TSP Manufacturing $$$

Orange, CA  |  714-639-2040

With over 20 years experience in distributing specialty fasteners to the aerospace, commercial, military, construction, electronic and marine industries, you can count on Integrity Fasteners for all your fastener needs. We supply screws, metric fasteners, industrial fasteners and more.

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Integrity Fasteners, Inc. $$$

San Diego, CA  |  619-231-5966

We are a master distributor of virtually every type of bolt, screw, washer, and nut you can think of. We are your complete source, even doing custom manufacturing when unique specifications are required. This diversity provides our customers with a strategic advantage; certified quality, superior service, and fast delivery.

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Hayes Bolt & Supply $$$
placeholder image Ford Fasteners, Inc. Ken Forging TSP Manufacturing Integrity Fasteners, Inc. Hayes Bolt & Supply

From there, the hex bolt is most likely heat treated to obtain the sought after hardness and tensile strength. After this, the bolt, which is now finished, may undergo a final zinc plating or hot-dipping process in order to inhibit corrosion.Hex bolts are categorized into one of several grades that are based on tensile strength and material composition. In the United States, the three most commonly used grades are two, five and eight.

Stainless Steel Hex Screws Stainless Steel Hex Screws - Ford Fasteners, Inc.

The higher the grade, the greater a bolt's tensile strength and hardness. Bolts with higher grades are generally used in applications where stronger fasteners are required. Outside of the US, metric grades are used. To compare, for example, metric grades 8.8 and 10.9 are respectively equivalent to US grades five and eight. Stainless steel hex bolts are categorized by the type of steel used.

The following are some of materials and grades by which hex bolts are categorized: stainless steel 18-8, stainless steel 316, zinc plated steel, zinc plated grade 5 steel, zinc plated grade 8 steel yellow, grade 8 steel plain finish, chrome plated grade 5 steel, hot dipped galvanized steel and silicon bronze. Additionally, aluminum and brass bolts are available for applications in the marine and aerospace industries. Stainless steel and silicon bronze hex bolts better resist corrosion than carbon steel and are typically used in applications where they will be exposed to the elements. Hex bolts are available in both standard and metric sizes and left and right threads. Additionally, both coarse and fine thread varieties are available.



Hex Bolt Informational Video