Spiral Point Tap,#4-40,HSS 2LXV2. OSG 2885001. Spiral Point Tap, Thread Size #4-40, UNC, Overall Length 1 27/32 in, High Speed Steel, Black Oxide, Right Hand, Thread Length 5/16 in, 75 Percent Thread Drill Size 2.20 mm, Thread Limit 2B, Class of Fit JIS 2, Number of Flutes 2.
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