What does 3/8 16 UNC 2B mean?

3/8-16 UNC 2B (21) The “2B” is a tolerance class. The standards for a thread series include specifications of tolerances. Most specify several different classes, because for some uses a close fit is essential, while achieving it for other uses would be a waste of money.

What is a 2B thread?

The “2B” is a tolerance class. The standards for a thread series include specifications of tolerances. Most specify several different classes, because for some uses a close fit is essential, while achieving it for other uses would be a waste of money.

What size are the threads on a UNF/UNC tap?

Tap size NF/NC UNF/UNC Threads per inch Basic major dia (inches) Basic minor dia of int. threads (inches) 5/8-18 UNF 18 .6250 .5649 3/4-10 UNC 10 .7500 .6417 3/4-16 UNF 16 .7500 .6823 7/8-9 UNC 9 .8750 .7547

What does 8 32 mean on a bolt?

A typical smaller fastener could be “a 1-inch 8-32,” “8” being a gauge number and “32” the number of threads per inch. A bolt’s diameter isn’t all you need to know to buy a nut to fit it.