1/2-20NF 1004 4FL H3 T-P-B HAND TAP

Hand Tap Set, Bottoming, Plug, Taper, HSS, Size 1/2, Finish Bright, Flutes 4, General Purpose, Pitch 20, Thread Type UNF, Thread Length 1-21/32 In., Thread Length 42.067 mm, Overall Length 3-3/8 In., Overall Length 85.725 mm, Pitch Diameter Limits H3, Shank Dia. 0.367, Standards USCTI 302, List Number 1004, For Alloy Steel, Carbon Steel, Free-Machining Stainless and Aluminum