ANSI B18.2.6 ASTM A563 Heavy Hex Nuts by Material, Finish and Size

Heavy Hex Nuts are larger and thicker than standard (finished) hex nuts.The heavy hex pattern is typically used for large diameter and high strength bolts, and with certain high-strength grades of steel can be used with structural bolts in structural applications.

Search thousands of US/Imperial fasteners by ASME specification, including ASME b18.2.6 Heavy Hex Nuts, in the FCH Sourcing Network database of first-run, surplus, odd lot, slow-moving and hard to find fasteners.

A heavy hex nut is visibly different from a normal hex nut or finished hex nut in that it is bigger and stronger. Hex Nuts are hexagon nuts with six sides that are used to tighten bolts and screws. Its use, however, is not restricted to hex-headed bolts. The hexagonal body allows for fast wrenching while still applying sufficient torque to the bolting joint. Both types of bolts can be used with hex nuts. Hex nuts are also known as hexagon nuts or six-sided nuts. With unified national coarse pitch (UNC), fine pitch (UNF), fixed pitch (Un), and ISO metric thread profiles, hex nut dimensions are described in both metric and imperial sizes. These are available in a variety of materials and ASTM requirements.
Common applications of Heavy Hex Nuts are:

  • • Structural
  • • Machinery
  • • Automotive
ASME b18.2.6 Heavy Hex Nuts by Imperial/ Sizes

Heavy Hex Nuts are available on the FCH Network with imperial diameters that range from 1/4 to 6, and with lengths that range from 5/16 to 8 1/2.

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ASME b18.2.6 Heavy Hex Nuts by Coatings/Finishes

ASME b18.2.6 Heavy Hex Nuts are available on the FCH Network in finishes or coatings that range from Plain to Phosphate.

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