Specifications
| Drill Bit Size (Inch): 5/16 | Drill Bit Size (Decimal Inch): 0.3125 |
| Drill Bit Material: HSS | Drill Point Angle (Degrees): 135 |
| Coating/Finish: Oxide | Flute Type: Regular Spiral |
| Cutting Direction: Right Hand | Point Type: Split Point |
| Primary Workpiece Material: Cast Iron; Steel | Coolant Through: No |
| Number of Flutes: 2 | Flute Length (mm): 80.96 |
| Flute Length (Decimal Inch): 3.1875 | Flute Length (Inch): 3-3/16 |
| Shank Diameter (Decimal Inch): 0.3125 | Overall Length (mm): 114.30 |
| Overall Length (Inch): 4-1/2 | Spiral Type: Regular |
| Overall Length (Decimal Inch): 4.5000 | Series: Jobber |
| Tool Application: Holemaking | Shank Diameter (Inch): 5/16 |
| Web Thinning: Web-Thinned | Web Configuration: Tapered |
| Shank Type: Straight | Double Margin: No |
| Drill Bit Grade: Heavy Duty | Drill Bit Size Range (Decimal Inch): 0.3000 – 0.3500 |
| Specification Designation: NAS | Country of Origin: VARIOUS |
| Drill Bit Size (Inch): 5/16 | |
| Drill Bit Size (Decimal Inch): 0.3125 | |
| Drill Bit Material: HSS | |
| Drill Point Angle (Degrees): 135 | |
| Coating/Finish: Oxide | |
| Flute Type: Regular Spiral | |
| Cutting Direction: Right Hand | |
| Point Type: Split Point | |
| Primary Workpiece Material: Cast Iron; Steel | |
| Coolant Through: No | |
| Number of Flutes: 2 | |
| Flute Length (mm): 80.96 | |
| Flute Length (Decimal Inch): 3.1875 | |
| Flute Length (Inch): 3-3/16 | |
| Shank Diameter (Decimal Inch): 0.3125 | |
| Overall Length (mm): 114.30 | |
| Overall Length (Inch): 4-1/2 | |
| Spiral Type: Regular | |
| Overall Length (Decimal Inch): 4.5000 | |
| Series: Jobber | |
| Tool Application: Holemaking | |
| Shank Diameter (Inch): 5/16 | |
| Web Thinning: Web-Thinned | |
| Web Configuration: Tapered | |
| Shank Type: Straight | |
| Double Margin: No | |
| Drill Bit Grade: Heavy Duty | |
| Drill Bit Size Range (Decimal Inch): 0.3000 – 0.3500 | |
| Specification Designation: NAS | |
| Country of Origin: VARIOUS |
| MSC# | 84579218 |
| Mfr# | 300SB 5/16 |
| Big Book# | 24 |




















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