Specifications
| Drill Bit Size (Inch): 5/16 | Drill Bit Size (Decimal Inch): 0.3125 |
| Drill Bit Material: Cobalt | Drill Point Angle (Degrees): 135 |
| Coating/Finish: Straw | Flute Type: Regular Spiral |
| Cutting Direction: Right Hand | Point Type: Split Point |
| Primary Workpiece Material: Steel | Specification Number: NAS 907 |
| Coolant Through: No | Number of Flutes: 2 |
| Flute Length (mm): 80.96 | Flute Length (Decimal Inch): 3.1875 |
| Flute Length (Inch): 3-3/16 | Primary Workpiece Material Code: P; S; K; M; N |
| 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 | Proprietary Coating/Finish: Oxide;Bronze |
| Series: R10CO-R15CO-R18CO | Tool Application: Drilling |
| Flute By Diameter Ratio: 10xD | Shank Diameter (Inch): 5/16 |
| Maximum Drilling Depth (Decimal Inch): 3.1875 | Maximum Drilling Depth (Inch): 3-3/16 |
| Shank Length (Decimal Inch): 1.3125 | Shank Length (Inch): 1-5/16 |
| Number of Flats: 0 | Web Thinning: Web-Thinned |
| Web Configuration: Tapered | Shank Type: Straight |
| Tool Performance: General Purpose | Standards: ANSI |
| Double Margin: No | Drill Bit Grade: Heavy Duty |
| Drill Bit Size Range (Decimal Inch): 0.3000 – 0.3500 | Specification Designation: NAS |
| Country of Origin: Brazil | |
| Drill Bit Size (Inch): 5/16 | |
| Drill Bit Size (Decimal Inch): 0.3125 | |
| Drill Bit Material: Cobalt | |
| Drill Point Angle (Degrees): 135 | |
| Coating/Finish: Straw | |
| Flute Type: Regular Spiral | |
| Cutting Direction: Right Hand | |
| Point Type: Split Point | |
| Primary Workpiece Material: Steel | |
| Specification Number: NAS 907 | |
| Coolant Through: No | |
| Number of Flutes: 2 | |
| Flute Length (mm): 80.96 | |
| Flute Length (Decimal Inch): 3.1875 | |
| Flute Length (Inch): 3-3/16 | |
| Primary Workpiece Material Code: P; S; K; M; N | |
| 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 | |
| Proprietary Coating/Finish: Oxide;Bronze | |
| Series: R10CO-R15CO-R18CO | |
| Tool Application: Drilling | |
| Flute By Diameter Ratio: 10xD | |
| Shank Diameter (Inch): 5/16 | |
| Maximum Drilling Depth (Decimal Inch): 3.1875 | |
| Maximum Drilling Depth (Inch): 3-3/16 | |
| Shank Length (Decimal Inch): 1.3125 | |
| Shank Length (Inch): 1-5/16 | |
| Number of Flats: 0 | |
| Web Thinning: Web-Thinned | |
| Web Configuration: Tapered | |
| Shank Type: Straight | |
| Tool Performance: General Purpose | |
| Standards: ANSI | |
| Double Margin: No | |
| Drill Bit Grade: Heavy Duty | |
| Drill Bit Size Range (Decimal Inch): 0.3000 – 0.3500 | |
| Specification Designation: NAS | |
| Country of Origin: Brazil |
| MSC# | 78503307 |
| Mfr# | 5998209 |
| Big Book# | 25 |



















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