Westward
Westward Cobalt Steel Drill Bit 5/16" Split Point Straw/Bronze
Cobalt steel jobber bit with a 143-degree split point for faster starts and reduced walking in tough metals
- TypeDrill Bits
- Split point reduces walking for accurate hole starts
- Cobalt steel construction withstands high heat in tough metals
- 143-degree point angle suits hard-material drilling
- Straw bronze finish identifies cobalt grade and resists corrosion
- 5/16 inch diameter matches common fractional drill requirements
Westward Cobalt Steel Drill Bit 5/16
This Westward jobber drill bit is made from cobalt steel with a straw-bronze finish. It measures 4-1/2 inches overall with a 3-3/16 inch flute length and a 5/16 inch shank diameter. The split point design has a 143-degree angle for accurate starts. The decimal equivalent is .3123 inches.
Suitable for right-hand drilling in metal
Users needing a cobalt steel bit with a split point for self-centering will find this suitable. Builders who require coolant-through capability should look elsewhere. The right-hand cutting direction limits use in left-handed applications. Buyers needing a different point angle or shank size must choose another bit.
143-degree split point angle for self-centering
The 143-degree split point is the key specification that determines if this bit matches the drilling task. It reduces walking and improves hole accuracy in tough alloys. Verify this angle suits the material and machine setup before purchase. The split point geometry defines the primary cutting action.
Highlights
- Split point reduces walking for accurate hole starts
- Cobalt steel construction withstands high heat in tough metals
- 143-degree point angle suits hard-material drilling
- Straw bronze finish identifies cobalt grade and resists corrosion
- 5/16 inch diameter matches common fractional drill requirements
Specifications
| Brand | Westward |
|---|---|
| Type | Drill Bits |
Questions about this item
Does the box contain only the single 5/16 inch cobalt steel drill bit, or are additional bits or a case included?
The product is a single jobber drill bit with a 5/16 inch diameter, split point geometry, 143 degree point angle, and straw/bronze finish; no case or extra bits are mentioned.
Should I choose this 5/16 inch fractional size or look for a different diameter in the same cobalt steel line?
Choose this bit when you need a 5/16 inch (0.3123 decimal equivalent) hole; other diameters in the same cobalt steel series would be separate list numbers.
How does the 143 degree split point affect drilling performance in a hand drill or press?
The 143 degree split point reduces walking and starts the cut faster on metal, while the cobalt steel construction resists heat during extended drilling.
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