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.
Quality Import CF55118716 1-3/16 Dia-HSS Pilot
SKU: FTS-CF55118716
MPN: 381–3861
Quality Import CF55125014 1-1/4 Dia-HSS Pilot
SKU: FTS-CF55125014
MPN: 381-3761
Quality Import CF55137514 1-3/8 Dia-HSS Pilot
SKU: FTS-CF55137514
MPN: 381-3769
Quality Import CF55143712 1-7/16 Dia-HSS Pilot
SKU: FTS-CF55143712
MPN: 381-3701
Quality Import CF55150014 1-1/2 Dia-HSS Pilot
SKU: FTS-CF55150014
MPN: 381-3777
Rock River Tool DE60016 1/4 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60016
MPN: 251408
Rock River Tool DE60020 5/16 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60020
MPN: 251410
Rock River Tool DE60024 3/8 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60024
MPN: 251412
Rock River Tool DE60028 7/16 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60028
MPN: 251414
Rock River Tool DE60032 1/2 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60032
MPN: 251416
Rock River Tool DE60036 9/16 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60036
MPN: 251418
Rock River Tool DE60040 5/8 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60040
MPN: 251420
Rock River Tool DE60044 11/16 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60044
MPN: 251422
Rock River Tool DE60048 3/4 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60048
MPN: 251424
Rock River Tool DE60052 13/16 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60052
MPN: 251426
Rock River Tool DE60056 7/8 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60056
MPN: 251428
Rock River Tool DE60060 15/16 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60060
MPN: 251430
Rock River Tool DE60100 1 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60100
MPN: 251432
Rock River Tool DE60104 1-1/16 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60104
MPN: 251434
Rock River Tool DE60108 1-1/8 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60108
MPN: 251436
Rock River Tool DE60112 1-3/16 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60112
MPN: 251438
Rock River Tool DE60116 1-1/4 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60116
MPN: 251440
Rock River Tool DE60120 1-5/16 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60120
MPN: 251442
Rock River Tool DE60124 1-3/8 Screw Size-CBD Tip-Straight Shank Interchangeable Pilot Counterbore
SKU: FTS-DE60124
MPN: 251444