KD Fasteners, Inc.’s Monel 500 hex bolts offer three times the yield strength and two times the tensile strength of Monel 400 while maintaining the excellent corrosion resistance characteristic of its predecessor.

The greater strength and hardness of Monel 500 hex bolts is due to age hardening where aluminum and titanium are added to the nickel-copper base.

Monel 500 Characteristicsmonel 500 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 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 hex bolts, also known as Hex Cap Screws, are available in standard (inch) and metric sizing. Standard sizes range from ¼ inch to 2 ½ inch diameter. However, custom sizes are also available and always made in the United States. 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.