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All Products ➞ Bordo ➞ Drills ➞ Jobber ➞ Cobalt HSS-Co5 ➞ Fractional Bulk
5/16" HSS Cobalt Jobber Drill
| Part Number: | 2010-5/16 |
| Brand: | Bordo |
| Sub Brand: | Cobalt Tough |
| Barcode: | 9326518036869 |
| Pack Qty: | 5 |
| Feed per revolution mm: | 0.21 |
| Spindle Speed Aluminium/Brass RPM: | 2936 |
| Spindle Speed Cast Iron RPM: | 1155 |
| Spindle Speed Free Cutting Steel RPM: | 2070 |
| Spindle Speed Malleable Iron RPM: | 1300 |
| Spindle Speed Med. Carbon Steel RPM: | 1444 |
| Spindle Speed Stainless Steel RPM: | 578 |
| Spindle Speed Tool Steel RPM: | 866 |
| Spindle Speed Wood/Plastic RPM: | 4380 |
| Diameter (inch): | 5/16 |
| Diameter (mm): | 7.94 |
| Flute Length (mm): | 81 |
| Overall Length (mm): | 114 |
About this item:
- 5/16" HSS Cobalt Twist
- Bordo Fractional Cobalt Tough HSS-Co5 Twist Drills.
- ANSI B94-11
- 135° Split Point (crankshaft point).
- Split point is self centering and the short distance from the drill axis to the outer corners results in faster penetration, reducing the need for end thrust.
- The 135° point should be used to cut harder steel materials especially in deep hole applications.
- In these situations it will produce thicker chips minimising work hardening of the cavity.
- Faster penetration reduces abrasion and friction along the cutting edges.
- Cobalt HSS Twist drills are extremely hard and provide superior performance and increased tool life especially in stainless steel and high tensile steel.
- Bronze Finish (gold oxide) surface treatment. The metallic brown coloured low temperature temper treatment is normally only used on cobalt tools for identification purposes.