KD Fasteners, Inc.’s Monel 500 heavy hex bolts combine the excellent corrosion resistance characteristic of Monel 400 with greater strength and hardness. These increased properties are obtained by adding aluminum and titanium to the nickel-copper base and by age hardening.

Monel 500 Characteristicsmonel 500 heavy hex bolts

  • Corrosion resistance
  • Good strength and hardness
  • Resistant to a sour gas environment
  • Spark resistant
  • Non-magnetic to -200°F
  • Excellent tensile and yield strengths at subzero temperatures

Monel 500 heavy hex bolts remain corrosion resistant in many marine and chemical environments. These include pure water to non-oxidizing mineral acids, salts, and alkalis. These bolts also offer excellent resistance to high-velocity sea water and resistance to a sour gas environment.


  • Pump shafts
  • Impellers
  • Doctors blades and scrapers
  • Oil and gas production
  • Electronic components
  • Sour-gas service applications
  • Oil well tools and instruments
  • Marine industry
  • Cryogenic applications

Monel 500 heavy hex bolts are custom made with quick turnaround times. Available in standard (inch) and metric sizing. Standard sizes are available up to 4-inch diameter and custom sized diameter goes up to 3 ½ inches. Products are made in the USA. Whether you need a standard or custom size, KD Fasteners has a solution for you. Contact us today by calling 1-800-736-5014 or filling out our contact form.