metals temporary joining methods Flashcards
1
Q
self tapping screws
A
join thin sheet metal
pilot hole drilled through metals to be joined
screw cuts its own thread when screwed in
2
Q
machine screws
A
thread is the whole length of shaft
use for thicker pieces
top piece has clearance hole larger than thread
bolt goes through this and is screwed into threaded hole
often tightened with spanner or allen key
3
Q
nuts and bolts
A
go through both pieces
nut is tightened onto end of screw to keep pieces together
