Author Question: What drives a ballistic concrete nail in? What will be an ideal ... (Read 42 times)

sjones · **on:** Jul 26, 2018

What drives a ballistic concrete nail in?

What will be an ideal response?

Question 2

Explain the significance of each part of this bolt specification. 2 x NC-20 hex head

What will be an ideal response?

coyin · **Reply #1 on:** Jul 26, 2018

Answer to Question 1

A small charge that resembles a 22-caliber blank cartridge.

Answer to Question 2

The first dimension given, 2 inches is the length of the bolt. The second dimension, inch, is the outside or major diameter of the bolt. The letters NC refer to the fact that this a national coarse threaded bolt. It has twenty threads per inch, and the bolt has a hex head.