A piece of fastening hardware used with aluminum square-tube Fast-Fold or EZ-Fold projection screens to attach the frame to the legs; or in the case of truss-framed screens, to attach the horizontal members to the verticals.
Usually 5/16"-18 (occasionally 1/4"-20) threads.
View attachment 4893
In context:
View attachment 4894
When assembling a portable projection screen, it often seems included with the kit are either: an abundance of extra crank bolts, or one too few.
[file]Image:crank_bolt2.jpg|thumb[/file][file]Image:crank_bolt1.jpg|thumb[/file]
Usually 5/16"-18 (occasionally 1/4"-20) threads.
View attachment 4893
In context:
View attachment 4894
When assembling a portable projection screen, it often seems included with the kit are either: an abundance of extra crank bolts, or one too few.
[file]Image:crank_bolt2.jpg|thumb[/file][file]Image:crank_bolt1.jpg|thumb[/file]
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