Interchangeable Pilot Counterbores
Decimal Cutting Diameter
- 0.2500" (3)
- 0.2813" (1)
- 0.3125" (3)
- 0.3438" (2)
- 0.3750" (3)
- 0.4063" (2)
- 0.4375" (3)
- 0.4688" (2)
- 0.5000" (4)
- 0.5313" (2)
- 0.5625" (3)
- 0.5938" (2)
- 0.6250" (1)
- 0.6563" (1)
- 0.6875" (4)
- 0.7500" (4)
- 0.7813" (2)
- 0.8125" (4)
- 0.8438" (1)
- 0.8750" (4)
- 0.9375" (2)
- 1.0000" (3)
- 1.0625" (1)
- 1.1250" (1)
- 1.1875" (1)
- 1.2500" (1)
- 1.3750" (1)
- 1.5000" (1)
- 1.6250" (1)
- 2.0000" (2)
- 2.1250" (1)
Fractional Cutting Diameter
- 3/16" (1)
- 7/32" (1)
- 1/4" (4)
- 9/32" (2)
- 5/16" (4)
- 11/32" (3)
- 3/8" (4)
- 13/32" (3)
- 7/16" (4)
- 15/32" (3)
- 1/2" (5)
- 17/32" (3)
- 9/16" (4)
- 19/32" (3)
- 5/8" (2)
- 21/32" (2)
- 11/16" (5)
- 23/32" (1)
- 3/4" (5)
- 25/32" (3)
- 13/16" (7)
- 27/32" (2)
- 7/8" (6)
- 29/32" (1)
- 15/16" (3)
- 31/32" (1)
- 1" (6)
- 1-1/16" (2)
- 1-1/8" (2)
- 1-3/16" (2)
- 1-1/4" (2)
- 1-5/16" (1)
- 1-3/8" (2)
- 1-7/16" (1)
- 1-1/2" (2)
- 1-9/16" (1)
- 1-5/8" (2)
- 1-11/16" (1)
- 1-3/4" (1)
- 1-13/16" (1)
- 1-7/8" (1)
- 1-15/16" (1)
- 2" (3)
- 2-1/8" (1)
Metric Cutting Diameter
- 6.35 mm (3)
- 7.14 mm (1)
- 7.94 mm (3)
- 8.73 mm (2)
- 9.53 mm (3)
- 10.32 mm (2)
- 11.11 mm (3)
- 11.91 mm (2)
- 12.70 mm (4)
- 13.49 mm (2)
- 14.29 mm (3)
- 15.08 mm (2)
- 15.88 mm (1)
- 16.67 mm (1)
- 17.46 mm (4)
- 19.05 mm (4)
- 19.84 mm (2)
- 20.64 mm (4)
- 21.43 mm (1)
- 22.23 mm (4)
- 23.81 mm (2)
- 25.40 mm (3)
- 26.99 mm (1)
- 28.58 mm (1)
- 30.16 mm (1)
- 31.75 mm (1)
- 34.93 mm (1)
- 38.10 mm (1)
- 41.28 mm (1)
- 50.80 mm (2)
- 53.98 mm (1)
19/32 in. HSS Bright Finish RH 3 Flute Short Set Straight Shank Interchangeable Pilot Counterbore
Brand: Union ButterfieldUnit Size: 1
Availability:
7/8 in. HSS Bright Finish RH 3 Flute Short Set Straight Shank Interchangeable Pilot Counterbore
Brand: Union ButterfieldUnit Size: 1
Availability:
7/16 in. HSS Bright Finish RH 3 Flute Short Set Straight Shank Interchangeable Pilot Counterbore
Brand: Union ButterfieldUnit Size: 1
Availability:
2 in. HSS Bright Finish RH 5 Flute Short Set Straight Shank Interchangeable Pilot Counterbore
Brand: Union ButterfieldUnit Size: 1
Availability:
9/16 in. HSS Bright Finish RH 3 Flute Short Set Straight Shank Interchangeable Pilot Counterbore
Brand: Union ButterfieldUnit Size: 1
Availability:
25/32 in. HSS Bright Finish RH 3 Flute Short Set Straight Shank Interchangeable Pilot Counterbore
Brand: Union ButterfieldUnit Size: 1
Availability:
27/32 in. HSS Bright Finish RH 3 Flute Short Set Straight Shank Interchangeable Pilot Counterbore
Brand: Union ButterfieldUnit Size: 1
Availability:
1/2 in. x 11/16 in. Shank HSS Bright Finish Interchangeable Detachable Counterbore Pilot
Brand: Union ButterfieldUnit Size: 1
Availability:
3/8 in. x 11/16 in. Shank HSS Bright Finish Interchangeable Detachable Counterbore Pilot
Brand: Union ButterfieldUnit Size: 1
Availability:
5/16 in. x 11/16 in. Shank HSS Bright Finish Interchangeable Detachable Counterbore Pilot
Brand: Union ButterfieldUnit Size: 1
Availability:
7/16 in. x 11/16 in. Shank HSS Bright Finish Interchangeable Detachable Counterbore Pilot
Brand: Union ButterfieldUnit Size: 1
Availability:
3/16 in. x 11/32 in. Shank HSS Bright Finish Interchangeable Detachable Counterbore Pilot
Brand: Union ButterfieldUnit Size: 1
Availability:
1/4 in. x 13/16 in. Shank HSS Bright Finish Interchangeable Detachable Counterbore Pilot
Brand: Union ButterfieldUnit Size: 1
Availability:
3/16 in. x 13/16 in. Shank HSS Bright Finish Interchangeable Detachable Counterbore Pilot
Brand: Union ButterfieldUnit Size: 1
Availability:
3/8 in. x 13/16 in. Shank HSS Bright Finish Interchangeable Detachable Counterbore Pilot
Brand: Union ButterfieldUnit Size: 1
Availability: