Screw Threads Chap 4 Flashcards
1
Q
How much classes of fit are there ? Screw threads
A
5
2
Q
What are the 5 types of classes of fit?
A
Class 1 - loose fit
Class 2 - free fit
Class 3 - medium fit
Class 4 - close fit
Class 5 - tight fit
3
Q
What are the three types of power transmission threads ?
A
Square thread
ACME thread
Buttress thread
4
Q
Unified threads
A
UNC
UNF
UNJF
5
Q
Metric thread
A
60•
Aerospace - MJ profile
6
Q
Self tapping thread
A
Cuts there own mating thread
7
Q
Thread gauges (3)
A
Screw thread gauges
Plug screw gauges
Ring screw gauges
