Type 518 FractionalTools - Counterbores - Counterbores with a Taper Shank - Taper Shank Counterbores with 4 Flutes
| Chip Class | Material Machined | Tool Type |
|---|---|---|
| 20 | NON-FERROUS - LONG CHIPS | 516 or 518 |
| 40 | NON-FERROUS - SHORT CHIPS | 516 or 518 |
| 60 | CAST IRONS | 516 or 518 |
| 80 | LOW STRENGTH STEELS | 511 |
| 100 | MEDIUM STRENGTH STEELS | 511 |
| 120 | HIGH STRENGTH STEELS | 511 |
| 140 | HIGH TEMPERATURE ALLOYS | 516 or 518 |
Description
- Right spiral flutes
- Carbide tips brazed to tough hardened alloy steel body
- Tool diameter tolerance: plus .001", minus .000"
- Geometry and carbide grade appropriate for material being machined
- Carbide tips brazed to tough hardened alloy steel body
- Precision ground cutting edges
- USCTI
- Taper Shank No. refers to American Standard taper series (formerly Morse taper series) per ASME/ANSI B5.10
Modifications
- Modified tool diameter - priced below
- Cutting diameter reduced for step
- Corner chamfer or corner radius
- Shank whistle notch for set screw
- Smaller taper shank
Coatings available:
- TITANIUM NITRIDE - TiN
- TITANIUM CARBONITRIDE - TiCN
- ZIRCONIUM NITRIDE - ZrN
- AL TITANIUM NITRIDE - AITiN
| Decimal Diameter | Fractional Diameter | Minimum Cut Diameter | Number Of Flutes | Overall Length | Pilot Hole Diameter | Taper Shank Number | EDP | Price | 0.9688 | 31/32 | 0.3530 | 4 | 6 3/8 | 5/16 | 3 | 51831 | $169.05 | 1.0000 | 1 | 0.3530 | 4 | 6 3/8 | 5/16 | 3 | 51832 | $159.45 | 1.0625 | 1 1/16 | 0.3530 | 4 | 6 3/8 | 5/16 | 3 | 51834 | $161.55 | 1.1250 | 1 1/8 | 0.3530 | 4 | 6 3/8 | 5/16 | 3 | 51836 | $166.65 | 1.1875 | 1 3/16 | 0.3530 | 4 | 6 3/8 | 5/16 | 3 | 51838 | $172.30 | 0.8125 | 13/16 | 0.2900 | 4 | 5 3/8 | 1/4 | 2 | 51826 | $139.05 | 0.8438 | 27/32 | 0.2900 | 4 | 5 3/8 | 1/4 | 2 | 51827 | $160.75 | 0.8750 | 7/8 | 0.2900 | 4 | 5 3/8 | 1/4 | 2 | 51828 | $146.20 | 0.9062 | 29/32 | 0.2900 | 4 | 6 1/8 | 1/4 | 3 | 51829 | $165.20 | 0.9375 | 15/16 | 0.2900 | 4 | 6 1/8 | 1/4 | 3 | 51830 | $150.15 | 0.6562 | 21/32 | 0.2280 | 4 | 5 1/8 | 3/16 | 2 | 51821 | $147.95 | 0.6875 | 11/16 | 0.2280 | 4 | 5 1/8 | 3/16 | 2 | 51822 | $134.35 | 0.7188 | 23/32 | 0.2900 | 4 | 5 3/8 | 1/4 | 2 | 51823 | $150.40 | 0.7500 | 3/4 | 0.2900 | 4 | 5 3/8 | 1/4 | 2 | 51824 | $136.75 | 0.7812 | 25/32 | 0.2900 | 4 | 5 3/8 | 1/4 | 2 | 51825 | $153.00 | 0.5000 | 1/2 | 0.2280 | 4 | 4 5/16 | 3/16 | 1 | 51816 | $121.80 | 0.5312 | 17/32 | 0.2280 | 4 | 4 5/16 | 3/16 | 1 | 51817 | $136.40 | 0.5625 | 9/16 | 0.2280 | 4 | 4 5/16 | 3/16 | 1 | 51818 | $124.05 | 0.5938 | 19/32 | 0.2280 | 4 | 5 1/8 | 3/16 | 2 | 51819 | $140.15 | 0.6250 | 5/8 | 0.2280 | 4 | 5 1/8 | 3/16 | 2 | 51820 | $127.40 |
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