Union Butterfield 6210146 4706 Aircraft Short Straight Shank Interchangeable Pilot Counterbore, 17/32 in Dia Bore, 1/4 in Dia Shank, 2-13/16 in OAL, 4 Flutes, HSS, Pilot Shank Diameter Compatibility: 1/8 in

UNIO 6005570 6210146 4706

Union Butterfield 6210153 4706 Aircraft Short Straight Shank Interchangeable Pilot Counterbore, 3/4 in Dia Bore, 1/4 in Dia Shank, 2-13/16 in OAL, 4 Flutes, HSS, Pilot Shank Diameter Compatibility: 3/16 in

UNIO 6005575 6210153 4706

Union Butterfield 6210141 4706 Aircraft Short Straight Shank Interchangeable Pilot Counterbore, 3/8 in Dia Bore, 1/4 in Dia Shank, 2-3/8 in OAL, 4 Flutes, HSS, Pilot Shank Diameter Compatibility: 3/32 in

UNIO 6005580 6210141 4706

Union Butterfield 6210139 4706 Aircraft Short Straight Shank Interchangeable Pilot Counterbore, 5/16 in Dia Bore, 1/4 in Dia Shank, 2-3/8 in OAL, 4 Flutes, HSS, Pilot Shank Diameter Compatibility: 3/32 in

UNIO 6005585 6210139 4706

Union Butterfield 6210143 4706 Aircraft Short Straight Shank Interchangeable Pilot Counterbore, 7/16 in Dia Bore, 1/4 in Dia Shank, 2-13/16 in OAL, 4 Flutes, HSS, Pilot Shank Diameter Compatibility: 1/8 in

UNIO 6005598 6210143 4706

Union Butterfield 6210157 4706 Aircraft Short Straight Shank Interchangeable Pilot Counterbore, 7/8 in Dia Bore, 1/4 in Dia Shank, 2-13/16 in OAL, 4 Flutes, HSS, Pilot Shank Diameter Compatibility: 3/16 in

UNIO 6005609 6210157 4706

Union Butterfield 6210147 4706 Aircraft Short Straight Shank Interchangeable Pilot Counterbore, 9/16 in Dia Bore, 1/4 in Dia Shank, 2-13/16 in OAL, 4 Flutes, HSS, Pilot Shank Diameter Compatibility: 1/8 in

UNIO 6005612 6210147 4706