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…

Leading Manufacturers
Ford Fasteners, Inc.
Fairfield, NJ | 800-272-3673Our 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!

Ken Forging
Jefferson, OH | 888-536-3674Our company has manufacturing experiences dating back to 1970 and over the years we have grown into an international supplier of bolts.

Southern Fasteners & Supply, Inc.
Winston-Salem, NC | 800-642-0921From our inventory of over 130,000 different fasteners, we know precisely which ones are right for your application. We test them for material composition and measurement accuracy. With our Vendor Management Inventory service (VMI) our Service Technicians monitor your needs and keep you fully supplied at all times. Our ISO 9001 and AS9120B certifications helps us maintain system standards that ensure the fasteners we supply are the highest quality parts available.

Dyson Corporation
Painsville, OH | 800-680-3600Dyson has over 100 years of experience in manufacturing industrial fasteners including bolts, screws, washers, construction accessories and custom forged and machined products. We carry a wide variety of standard fasteners as well as offer custom production, from a few parts up to a large order.

Fastening Products of Lancaster, Inc.
Lancaster, PA | 717-299-5771Since 1974, Fastening Products of Lancaster has been producing machined parts such as industrial bolts. We offer carriage bolts, hex lag bolts, anchor bolts and lag shields, among many others. Our stocking warehouse is the region's largest, and we offer same day shipment of items we have in stock.

More Hex Bolts Suppliers
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.
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.