Counterbores are used to enlarge a preformed hole when a flat bottom is required or to spotface when a machine finish is required. The counterbore is an end cutting tool which may utilize a pilot to align the enlarged hole being machined with the preformed hole. Capscrew counterbores have non-removable pilots.
| Decimal Diameter | Fractional Diameter | Number Of Flutes | Overall Length | Pilot Diameter | Pilot Diameter Mm | Pilot Length | Screw Size | Screw Size Mm | Shank Diameter | EDP | Price | Order | 1.5420 | 4 | 8 1/2 | 1.031 | 1 | 1 | 1 | 95130313 | $202.95 | 1.5100 | 4 | 8 1/2 | 1 | 1 | 1 | 1 | 95130000 | $202.95 | 1.5260 | 4 | 8 1/2 | 1.015 | 1 | 1 | 1 | 95130156 | $202.95 | 1.3380 | 4 | 8 1/8 | 0.891 | 7/8 | 7/8 | 7/8 | 95138910 | $177.25 | 1.3540 | 4 | 8 1/8 | 0.906 | 7/8 | 7/8 | 7/8 | 95139060 | $177.25 | 1.2008 | 3 | 8 | 20.5 | 3/4 | 20 | 7/8 | 9513205 | $170.15 | 1.3220 | 4 | 8 1/8 | 0.875 | 7/8 | 7/8 | 7/8 | 95138750 | $177.25 | 1.1490 | 3 | 7 3/4 | 0.765 | 3/4 | 3/4 | 3/4 | 95137650 | $159.45 | 1.1650 | 3 | 7 3/4 | 0.781 | 3/4 | 3/4 | 3/4 | 95137810 | $159.45 | 0.9770 | 3 | 7 5/8 | 0.656 | 5/8 | 5/8 | 5/8 | 95136560 | $161.75 | 1.1330 | 3 | 7 3/4 | 0.75 | 3/4 | 3/4 | 3/4 | 95137500 | $159.45 | 0.9610 | 3 | 7 5/8 | 0.64 | 5/8 | 5/8 | 5/8 | 95136400 | $161.75 | 0.9646 | 3 | 7 5/8 | 16.5 | 5/8 | 16 | 5/8 | 9513165 | $183.45 | 0.8830 | 3 | 7 5/8 | 0.593 | 9/16 | 9/16 | 5/8 | 95135930 | $141.85 | 0.9450 | 3 | 7 5/8 | 0.625 | 5/8 | 5/8 | 5/8 | 95136250 | $161.75 | 0.8510 | 3 | 7 5/8 | 0.563 | 9/16 | 9/16 | 5/8 | 95135625 | $141.85 | 0.8670 | 3 | 7 5/8 | 0.578 | 9/16 | 9/16 | 5/8 | 95135780 | $141.85 | 0.7890 | 3 | 7 1/2 | 0.531 | 1/2 | 1/2 | 1/2 | 95135310 | $146.80 | 0.8465 | 3 | 7 5/8 | 14.5 | 9/16 | 14 | 5/8 | 9513145 | $175.65 | 0.7570 | 3 | 7 1/2 | 0.5 | 1/2 | 1/2 | 1/2 | 95135000 | $146.80 | 0.7730 | 3 | 7 1/2 | 0.515 | 1/2 | 1/2 | 1/2 | 95135150 | $146.80 | 0.6950 | 3 | 7 | 0.468 | 1/2 | 7/16 | 1/2 | 95134680 | $129.45 | 0.7283 | 3 | 7 1/2 | 12.5 | 1/2 | 12 | 1/2 | 9513125 | $150.60 | 0.6630 | 3 | 7 | 0.438 | 1/2 | 7/16 | 1/2 | 95134375 | $129.45 | 0.6790 | 3 | 7 | 0.453 | 1/2 | 7/16 | 1/2 | 95134530 | $129.45 | 0.6040 | 3 | 6 1/2 | 0.406 | 1/2 | 3/8 | 1/2 | 95134060 | $133.95 | 0.6496 | 3 | 7 | 10.5 | 1/2 | 10 | 1/2 | 9513105 | $160.55 | 0.5720 | 3 | 6 1/2 | 0.375 | 1/2 | 3/8 | 1/2 | 95133750 | $133.95 | 0.5880 | 3 | 6 1/2 | 0.39 | 1/2 | 3/8 | 1/2 | 95133900 | $133.95 | 0.5070 | 3 | 6 1/8 | 0.343 | 3/8 | 5/16 | 3/8 | 95133430 | $118.80 | 0.5315 | 17/32 | 3 | 6 1/2 | 8.5 | 3/8 | 8 | 1/2 | 9513085 | $147.60 | 0.4750 | 3 | 6 1/8 | 0.313 | 3/8 | 5/16 | 3/8 | 95133125 | $118.80 | 0.4910 | 3 | 6 1/8 | 0.328 | 3/8 | 5/16 | 3/8 | 95133280 | $118.80 | 0.4134 | 3 | 5 5/8 | 6.5 | 5/16 | 6 | 5/16 | 9513065 | $124.25 | 0.4140 | 3 | 5 5/8 | 0.281 | 5/16 | 1/4 | 5/16 | 95132810 | $118.05 | 0.3820 | 3 | 5 5/8 | 0.25 | 5/16 | 1/4 | 5/16 | 95132500 | $106.25 | 0.3980 | 3 | 5 5/8 | 0.265 | 5/16 | 1/4 | 5/16 | 95132650 | $118.05 | 0.3543 | 3 | 5 5/8 | 5.5 | 9/32 | 5 | 5/16 | 9513055 | $117.70 |
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