interrupted screw

(redirected from Interrupted thread)
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interrupted screw

n
(Firearms, Gunnery, Ordnance & Artillery) a screw with a slot or slots cut into the thread, esp one used in the breech of some guns permitting both engagement and release of the block by a partial turn of the screw
References in periodicals archive ?
The soft steel of the interrupted thread bolt head allowed the left rear thread to bend when struck hard against the bolt stop.
The method by which this was accomplished is referred to as the interrupted thread.
The bolt body has two pairs of interrupted thread locking lugs with three lugs on each side.
I am used to takedown rifles that use an interrupted thread design, and I'd never encountered a system this simplistic.
As a result, the closures have an interrupted thread, which is not always acceptable.
Along with this, an interrupted thread was used on the barrel shank so that takedown was accomplished with a mere quarter-turn of the barrel, once the aforementioned retaining device was overcome.
The barrel shank and the receiver are machined with an interrupted thread.
Rear section with complete interrupted thread assembly for buffer to lock onto and center section with grip mounting holes intact and ejector plate in place.
The rear of the interrupted thread was readily deformed by battering against the bolt stop, and the bolt head could be flipped during reassembly so the rifle would fire without being locked.