Bolt Planet

Nut and Bolt Stress Calculators This is the place to find UN/Unified nut and bolt dimensions/thread dimensions/sizes and stress calculators.

Common Bolt Types   UNC UNF UNEF 4UN 6UN 8UN 12UN 16UN 20UN 28UN 32UN UNS       Help   #00, #000, #0000 UNR, UNJ, M, MJ Click on UNC if you can't decide.

Specialty Threads   Acme, Stub Acme, Stub 60, Buttress, and others

Mistakes in Engineering Textbooks

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This site is maintained by Dr. Roy Maltby