Question

1.Determine how deep you would have to drill a hole if you needed to use a plug tap to form 15 complete threads for a 0.875 – 16 thread. Explain your decision.

How deep would the hole need to be for a bottoming tap? Explain your decision.

2. Describe the thread specification of ¾-16 UNF – LH 0.5625

3.

1. Part A- For a 7/16” fine threaded hex head, 7” long bolt, specify:

Nominal Size	Tap Drill Dia	Minor Dia	Major Dia	Lock washer Min. inside Dia	Lock washer Mean Section Thk.	Hex Nut Thickness (H)	Hex Jam Nut Thickness (H)	Thread Length

Part B- In case of a Close Fit Class, what will be the nominal drill size?

Answer 1