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Chamfer 4.5P - 5.5P. Class of Fit 3B. Tap Style Spiral Point. Tap Size 1/4". Thread Type UNC. Product List Number 287. Number of Flutes 2. Square Size 0.190".
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.