肉辣文林宛宛
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 
 Links 

This site is maintained by Dr. Roy Maltby