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▲ Fine Unified Thread (UNF): #10 - 32 UNF, 1/4” - 28 UNF, 5/16” - 24 UNF, 3/8” - 24 UNF, 7/16” - 20 UNF, 1/2” - 20 UNF. ▲ MOST POPULAR SIZE: Includes a full range of most commonly used tap & die sizes for unified screw threads (UN-Series).
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.