They are surface treated with abrasion-resistant black oxide and made of high speed steel with a 118̡̉ conventional point. Hand Taps are the most versatile taps for hand use and are popular for general machine tapping. Drill America Tap and Drill Bit Kit in Pouch Case.
3/8"-80 UNS HSS Plug Tap and "U" HSS Drill Bit Kit Tap Information: Drill America DWT Series Hand Plug Taps are used to make new threads or re-thread damaged and/or jammed threads. They are also appropriate for tapping the vast majority of materials in through or blind holed conditions.