64 Piece NC NF HSS Round Tap and Die Set (#4 - 1") with 1" - 2" OD Round Dies and Handles

UNC (Coarse Thread): #4-40, #6-32, #8-32, #10-24, #12-24, 1/4"-20, 5/16"-18, 3/8"-16, 7/16"-14, 1/2"-13, 9/16"-12, 5/8"-11, 3/4"-10, 7/8"-9, and 1"-8. UNF (Fine Thread): #4-48, #6-40, #8-36, #10-32, #12-28, 1/4"-28, 5/16"-24, 3/8"-24, 7/16"-20, 1/2"-20, 9/16"-18, 5/8"-18, 3/4"-16, 7/8"-14, and 1"-12.

About High Speed Steel Plug Taps

• Used to make new threads or re-thread damaged and/or jammed threads
• Hand Taps are the most versatile taps for hand use, or for tapping under power
• Hand taps are popular for use in general machine tapping or CNC tapping
• They are also appropriate for tapping the vast majority of materials in through or blind holed conditions
• Plug Style taps are generally used in thru holes

About Round Dies

• For use in making new threads or re-threading existing threads
• Good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
• Round die is chamfered on both faces. One side has a 2 to 3 thread chamfer for threading, the other side has a 1 to 1-1/2 thread chamfer for threading close to a shoulder.
• Adjustment is obtained by a fine pitch screw which forces the sides of the die apart, or allows them to spring together.
• The slot is beveled so that when the dies are used in a machine holder the adjusting screw can be removed and adjustment made by the adjusting screws in the holder.