Chatterless Countersink 90° Six Flute 5/16"
(Pack of
1.0)
Centerline Angle 45°, Included Angle 90°
Staggered cutting edges inhibit the occurrence of resonant or harmonic vibration
No break-in period required
Made of M2 high-speed steel
Made in USA
45° Centerline Angle
Can be used in drill presses, screw machines, automatics, lathes, hand tools or special set-ups
NOTE: Use of a good quality cutting fluid is recommended.
CAUTION: Any cutting tool may break or shatter under improper use. Government regulations require use of safety glasses and other appropriate safety equipment at all times in the vicinity of use.
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Product Description
Centerline Angle 45°, Included Angle 90° Staggered cutting edges inhibit the occurrence of resonant or harmonic vibration
No break-in period required
Made of M2 high-speed steel
Made in USA
45° Centerline Angle
Can be used in drill presses, screw machines, automatics, lathes, hand tools or special set-ups
NOTE: Use of a good quality cutting fluid is recommended.
CAUTION: Any cutting tool may break or shatter under improper use. Government regulations require use of safety glasses and other appropriate safety equipment at all times in the vicinity of use.
Technical Specifications
Item#: | 57144 |
---|---|
Type | Countersink |
Body Diameter | 5/16 " |
Flutes | Six |
Included Angle | 90 ° |
Centerline Angle | 45 ° |
Shank Size | 1/4 " |
Shank Length | 1 " |
Overall Length | 2 " |
For Screw Size | No. 3 - No. 5 |
Maximum RPM (Aluminum) | 1,710 RPM |
Maximum RPM (Cast Iron or Mild Steel) | 850 RPM |
Material | M2 High Speed Steel |
UNSPSC #: | 23241603 |
TAA Compliant: | Yes |
Weight: | 0.04 lb |
Product Restrictions


