High Carbon Steel Tap & Drill Bit Combo Sets

Tap and drill bit combo sets are ideal for drilling the proper hole size and cutting internal threads.

  • Most taps feature four-flute design for maximum chip clearance
  • Recommended drill size is permanently marked on each tap
Where to Buy
Item #TypeTap SizeDrill SizeQuantity
21660Machine screw
4-40 NC433, 1 set per card
21661Machine screw
6-32 NC363, 1 set per card
21662Machine screw
8-32 NC293, 1, set per card
21663Machine screw
10-24 NC253, 1, set per card
21664Machine screw
10-32 NC213, 1, set per card
21665Machine screw
12-24 NC163, 1, set per card
21666Fractional
1/4-20 NC73, 1, set per card
21667Fractional
1/4-28 NF33, 1, set per card
21668Fractional
5/16-18 NCF3, 1, set per card
21669Fractional
3/8-16 NC5/16"3, 1, set per card
21670Fractional
1/2-13 NC27/64"3, 1, set per card
21671Pipe
1/4-18 NPT7/16"3, 1, set per card