IS Counterbores
Freer Tool & Supply’s IS counterbores collection is designed for clean, accurate fastener seating in machining, fabrication, and assembly work. Counterbores create flat-bottom recesses that help bolts and socket head cap screws sit properly, improving fit, alignment, and overall assembly quality—especially when you’re working to print and holding tight tolerances.
Rock River Tool DE60128 1-7/16 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60128
MPN: 251446
Rock River Tool DE60132 1-1/2 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60132
MPN: 251448
Rock River Tool DE60136 1-9/16 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60136
MPN: 251450
Rock River Tool DE60140 1-5/8 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60140
MPN: 251452
Rock River Tool DE61016 1/4 Screw Size-3-13/16 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61016
MPN: 251608
Rock River Tool DE61020 5/16 Screw Size-3-13/16 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61020
MPN: 251610
Rock River Tool DE61024 3/8 Screw Size-4-1/16 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61024
MPN: 251612
Rock River Tool DE61028 7/16 Screw Size-4-1/16 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61028
MPN: 251614
Rock River Tool DE61032 1/2 Screw Size-4-5/16 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61032
MPN: 251616
Rock River Tool DE61036 9/16 Screw Size-4-5/16 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61036
MPN: 251618
Rock River Tool DE61040 5/8 Screw Size-5-1/8 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61040
MPN: 251620
Rock River Tool DE61044 11/16 Screw Size-5-1/8 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61044
MPN: 251622
Rock River Tool DE61048 3/4 Screw Size-5-3/8 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61048
MPN: 251624
Rock River Tool DE61052 13/16 Screw Size-5-3/8 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61052
MPN: 251626
Rock River Tool DE61056 7/8 Screw Size-5-3/8 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61056
MPN: 251628
Rock River Tool DE61060 15/16 Screw Size-6-1/8 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61060
MPN: 251630
Rock River Tool DE61100 1 Screw Size-6-3/8 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61100
MPN: 251632
Rock River Tool DE61104 1-1/16 Screw Size-6-3/8 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61104
MPN: 251634
Rock River Tool DE61108 1-1/8 Screw Size-6-3/8 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61108
MPN: 251636
Rock River Tool DE61112 1-3/16 Screw Size-6-3/8 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61112
MPN: 251638
Rock River Tool DE61116 1-1/4 Screw Size-6-5/8 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61116
MPN: 251640
Rock River Tool DE61120 1-5/16 Screw Size-6-5/8 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61120
MPN: 251642
Rock River Tool DE61124 1-3/8 Screw Size-6-5/8 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61124
MPN: 251644
Rock River Tool DE61128 1-7/16 Screw Size-7-7/8 OAL-CBD Tip-Interchange Pilot Cntrbre
SKU: FTS-DE61128
MPN: 251646