Precision Twist Drill Jobber Length Drill Bit, Heavy Duty, Series: 331HD, Imperial, O Drill - Letter, 0.316 in Drill - Decimal Inch, 4-1/2 in Overall Length, 3-3/16 in Cutting Depth, Spiral Flute, 3-3/16 in Flute Length, 0.316 in Shank, Straight Shank, 135 deg Point, Split/Self-Centering Point, Right Hand Cutting Direction, HSS Cutting Edge, HSS, Steam Tempered, Dark Gray, Applicable Materials: Medium Strength Alloy Materials
| Applicable Materials |
: |
Medium Strength Alloy Materials |
| Color |
: |
Dark Gray |
| Cutting Depth |
: |
3-3/16 in |
| Cutting Direction |
: |
Right Hand |
| Cutting Edge Material |
: |
HSS |
| Drill Diameter Measurement System |
: |
Imperial |
| Flute Length |
: |
3-3/16 in |
| Flute Type |
: |
Spiral |
| Overall Length |
: |
4-1/2 in |
| Point Type |
: |
Split/Self-Centering |
| Series |
: |
331HD |
| Shank Size |
: |
0.316 in |
| Shank Type |
: |
Straight |
| Type |
: |
Heavy Duty |
| Drill Size - Letter |
: |
O |
| Drill Size - Decimal Inch |
: |
0.316 in |
| Point Angle |
: |
135 deg |
| Material |
: |
HSS |
| Finish |
: |
Steam Tempered |
- Web construction is heavier than the 301JD general purpose drills providing greater rigidity and strength in drilling medium strength alloy materials
- The self-centering 135 deg split point additionally reduces the thrust requirements and minimizes walking particularly on curved surfaces
- Steam oxide for improved abrasion resistance
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https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Union_Butterfield_1010845_Catalog.pdf
