The deformed end of a solid rivet that is created by bucking or squeezing the fastener during assembly. Unlike the factory head which is forged during manufacturing, this head is formed on the job to lock the joint together.
Heard on the job
The inspector rejected three rivets because the shop head was driven off-center.
Insider tip
A properly formed shop head should typically be 1.5 times the shank diameter in width and 0.5 times the shank diameter in height.
Also heard as
- Driven head
- Buck-tail
Do not mix it up with
- Factory head: The factory head is the pre-formed head on the uninstalled rivet, while the shop head is formed during installation.