Heavy Hex Bolts
Heavy hex bolts are bolts with a distinctly thick and wide hexagonal head. They are also known as heavy hex structural bolts and heavy duty bolts.
Frequently Asked Questions About Heavy Hex Bolts
What are heavy hex bolts used for?
Heavy hex bolts are used in a variety of high temperature and high strength industrial applications, most commonly steel fabrication and general construction.
What’s the difference between a heavy hex bolt and a standard hex bolt?
The key difference is in their size and thickness: heavy hex bolts have a thicker head than standard hex bolts, and a greater bearing surface that distributes the clamping load over a wider area.
What ASTM specifications are available?
ASTM specifications offered include ASTM A307 (carbon steel, ranging from 1/4-4” in diameter, and includes Grades A-C), ASTM A193 (alloy steel and stainless steel, built for high temperature and high pressure), and ASTM A325 and A490 (designed for steel-to-steel connections, shorter thread lengths, 1/2-1 1/2” in diameter).
What materials and finishes are available?
AFT offers heavy hex bolts in low and medium carbon steel, alloy, and stainless steel. In terms of finishes, AFT offers plain, hot dipped galvanized, phosphate, Xylan blue/Teflon, zinc Cr+3, or cadmium for additional corrosion resistance.
What sizes are available?
AFT offers diameter-thread sizes from 3/8”-16 to 2 1/4”-4 1/2, and lengths from 1-18”.
Related Searches: Heavy Hex Nuts, Hex Bolts, Structural Bolts