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What are semi permanent joints. They refer to methods used to join different methods together, securely but not necessarily permanently.

Round or pin key.

Consist of a taper pin wich may be used to fix collars onto shafts.

Ways of joining engineering materials.

.bolts and nuts.

Studs.

Locking devices

Rivets and keys

Split pins

Bolts .

A bolt is a term for threaded fastener, using hexagonal square .

Head styles .

.hex

Square

Washer .

Body .

The body of a bolt is divided into the shank .

Partical thread .

Full thread. .

Point styles .

Refers to the end of threads .

Finish .

Mild steel bolts either have a black finish .

Studs .

Is a fastener threaded at both ends with an unthreaded shank in between