Type 668 FractionalTools - Drills - Taper Shank Twist Drills - Taper Shank Drills with Smaller Taper Shank Number and 118° Standard Point
| Chip Class | Material Machined | Tool Type |
|---|---|---|
| 20 | NON-FERROUS - LONG CHIPS | - |
| 40 | NON-FERROUS - SHORT CHIPS | - |
| 60 | CAST IRONS | - |
Discontinued, While Supplies Last.
Description
- Standard taper shank, one number smaller
- Heavy duty construction
- Carbide tip high temperature brazed to hardened tool steel body
- Smooth flutes for effective chip flow
- Precision ground to insure concentricity of tip & body
- All dimensional & element tolerances conform to one of:
ASME/ANSI B94.11M
ISO - International Organization for Standardization
NAS 907 - National Aerospace Standards
USCTI - United States Cutting Tool Institute (formerly MCTI) - Taper Shank No. refers to American Standard taper series (formerly Morse taper series) fer ASME/ANSI B5.10
Modifications
- Modified tool diameter
- Metric tool diameter
- Modified point and / or angle
- Shank whistle notch for set screw
Coatings available:
- TITANIUM NITRIDE - TiN
- TITANIUM CARBONITRIDE - TiCN
- ZIRCONIUM NITRIDE - ZrN
- AL TITANIUM NITRIDE - AITiN
Use
- For tool holders that require a smaller taper shank
| Decimal Diameter | Fractional Diameter | Flute Length | Overall Length | Taper Shank Number | EDP | Price | 1.1562 | 1 5/32 | 7 1/4 | 11 7/8 | 3 | 66874 | $304.80 | 1.1875 | 1 3/16 | 7 3/8 | 12 | 3 | 66876 | $257.25 | 1.2188 | 1 7/32 | 7 1/2 | 12 1/8 | 3 | 66878 | $300.15 | 1.2500 | 1 1/4 | 7 7/8 | 12 1/2 | 3 | 66880 | $275.20 | 0.8750 | 7/8 | 6 1/8 | 10 | 2 | 66856 | $136.95 | 0.8906 | 57/64 | 6 1/8 | 10 | 2 | 66857 | $161.95 | 0.9062 | 29/32 | 6 1/8 | 10 | 2 | 66858 | $147.15 | 1.0938 | 1 3/32 | 6 7/8 | 11 1/2 | 3 | 66870 | $312.55 | 1.1250 | 1 1/8 | 7 1/8 | 11 3/4 | 3 | 66872 | $224.60 | 0.7969 | 51/64 | 6 1/8 | 10 | 2 | 66851 | $148.45 | 0.8125 | 13/16 | 6 1/8 | 10 | 2 | 66852 | $125.95 | 0.8281 | 53/64 | 6 1/8 | 10 | 2 | 66853 | $148.45 | 0.8438 | 27/32 | 6 1/8 | 10 | 2 | 66854 | $128.60 | 0.8594 | 55/64 | 6 1/8 | 10 | 2 | 66855 | $156.80 | 0.5000 | 1/2 | 4 3/8 | 7 3/4 | 1 | 66832 | $84.55 | 0.5156 | 33/64 | 4 5/8 | 8 | 1 | 66833 | $104.25 | 0.5312 | 17/32 | 4 5/8 | 8 | 1 | 66834 | $89.35 | 0.5469 | 35/64 | 4 7/8 | 8 1/4 | 1 | 66835 | $105.75 | 0.5625 | 9/16 | 4 7/8 | 8 1/4 | 1 | 66836 | $90.00 | 0.4844 | 31/64 | 4 3/8 | 7 3/4 | 1 | 66831 | $107.65 |