bolt blank

bolt blank

[′bōlt ‚blaŋk]
(design engineering)
A threadless bolt with a head that can be threaded for specific applications. Also known as screw blank.

bolt blank, screw blank

A bolt having a fixed head, but no threads or nuts; intended for a subsequent threading operation.
Mentioned in ?
References in periodicals archive ?
The tool is shown in a perspective view at the right, while the left shows the same tool in position over the anvil's hardie hole with a flattened bolt blank in place.
4) Hex head (right) and square head (left) bolt blanks, both made by the upsetting method.