by Unknown
Buy new: $26.95
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Also referred to as "Chicago Screw Posts" & "Chicago Screws", our Aluminum screw post binding posts are a great choice for swatch books, architectural and engineering drawings, or any application where loose sheets need to be kept together. * Diameter (outside post): 3/16" * Diameter (outside screw head): 7/16" * Recommended hole size: 1/4-5/16" * Post is threaded all the way through * Screw Head: 1/16" (A top & bottom head will add an additional 1/8" to post length)