Exam 13: Threads, Fasteners, and Springs

Which of the following is a general-purpose thread for holding purposes, designated NC?

Springs are classified as helical or __________.

In the thread note .25-20UNC-2B-LH, what is the class of fit? ________________

What is the radius of the curved head of a pan head machine screw, having a nominal size of 8? _________

The diameter of an imaginary cylinder passing though the threads to make equal the widths of the threads and the widths of the spaces cut by the cylinder describes:

What is the bolt max thickness of a high strength structural bolt of a M16x2 ? ________

Three types of compression springs are helical, extension, and torsion.

Which line type may be used to show a repetition of a series of identical features?

The screw identified as .75x2.50 HEX CAP SCR is 2 ½ inches long.

What is the drill diameter in mm of a $\varnothing$ .2835" ? __________