High Carbon Steel Fractional Bottoming Taps

High carbon steel fractional bottoming taps are ideal for cutting right-hand internal threads.

  • Bottoming taps have 1-1/2 threads chamfered for tapping to the bottom of a hole
  • Four-flute design on all taps ensures fast and easy chip clearance
  • Required drill size is permanently etched on the tool for quick and easy reference
Where to Buy
Item #SizeThread LengthOverall LengthShank DiameterNumber of FlutesUse Drill Bit SizeQuantity
202681/4" - 20 NC1.0002-1/2".250 / .257473, 1 per card
202691/4" - 28 NF1.0002-1/2".250 / .257433, 1 per card
202705/16" - 24 NF1.1252-23/32".314 / .3184F3, 1 per card
202715/16" - 24 NF1.1252-23/32".314 / .3184I3, 1 per card
202723/8" - 16 NC1.2502-15/16".376 / 3.8145/16"3, 1 per card
202733/8" - 24 NF1.2502-15/16".376 / .381421/64"3, 1 per card
202747/16" - 14 NC1.4373-5/32".318 / .32143/8"3, 1 per card
202757/16" - 20 NF1.4373-5/32".318 / .321425/64"3, 1 per card
202761/2" - 13 NC1.6563-3/8".362 / .364427/64"3, 1 per card
202773/16" - 32 NS1.6562-3/8"1.88 / .195429/64"3, 1 per card