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Product Specifications:
| Item | Jobber Length Drill Bit |
| Aircraft Drill | No |
| Application | Carbon Steel, Alloy Steel, Cast Iron, Use With Positive Split Sleeve Drivers |
| Coolant Fed | Non-Coolant Through |
| Coolant Through | No |
| Cutting Direction | Right Hand |
| Decimal Equivalent | 0.3125 |
| Depth X Dia. Ratio | 4xd |
| Depthdia. Ratio | 4Xd |
| Drill Bit Dimension Type | Fractional Inch |
| Drill Bit Finish | Black Oxide |
| Drill Bit Grouping | Drill Bit |
| Drill Bit Material | High Speed Steel |
| Drill Bit Point Angle | 118° |
| Drill Bit Point Type | Conventional Point |
| Drill Bit Size | 5/16" |
| Drill Diameter Tolerance | -0.001" to 0" |
| Drill Length Class | Jobber Length |
| Drill Point Length | 0.0939" |
| Finish | Black Oxide |
| Finish - Machining | Black Oxide |
| Flute Length | 3 3/16" |
| Flute Type | Spiral |
| Grade | General Purpose |
| Helix Angle | +21° to +34° |
| Left/right Hand | Right |
| Material | High Speed Steel |
| Material - Machining | High Speed Steel |
| Material Grade - Machining | General Purpose |
| Max. Drilling Depth | 2 3/8" |
| Mfr. Series | 250AN |
| Number Of Coolant Holes | 0 |
| Number Of Flutes | 2 |
| Overall Length | 4 1/2" |
| Point Angle | 118° |
| Point Type | Conventional Point |
| Primary Material Application | Cast Iron, Steel |
| Primary Material Application Iso Code | K, P |
| Series | 250AN Series |
| Shank Length | 1 5/16" |
| Shank Type | Tang Shank |
| Shank Type - Machining | Tang Shank |
| Sheeter Drill | No |
| Size | 0.312" |
| Spiral Direction | Right Hand |
| System Of Measurement | Fractional Inch |
| Web Thinning | Thinned |
Shipping Info:
| Ship weight (kg) | 0.03 |
| Ship height (cm) | 3.81 |
| Ship length (cm) | 12.5 |
| Ship width (cm) | 2.54 |
| Country of Origin | US |
Product Variants
| Product | Model | Coolant Fed | Cutting Direction | Flute Length | Flute Type | Overall Length | Drill Bit Size | Drill Bit Point Angle | Drill Bit Point Type | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
41020TANG | Non Coolant Through | Right Hand | 3 3/16" | Parabolic | 4 1/2" | 5/16" | 135° | Split Point | €48.45 | |
![]() |
47358 | Non-Coolant Through | Right Hand | 94 mm | Spiral | 142 mm | 11.8 mm | 118° | Conventional Point | €28.27 | |
![]() |
45364 | Non-Coolant Through | Right Hand | 108 mm | Spiral | 160 mm | 13.8 mm | 118° | Conventional Point | €56.22 | |
![]() |
47365 | Non-Coolant Through | Right Hand | 114 mm | Spiral | 169 mm | 14.25 mm | 118° | Conventional Point | €60.16 | |
![]() |
47367 | Non-Coolant Through | Right Hand | 114 mm | Spiral | 169 mm | 14.75 mm | 118° | Conventional Point | €60.46 | |
![]() |
47371 | Non-Coolant Through | Right Hand | 120 mm | Spiral | 178 mm | 15.75 mm | 118° | Conventional Point | €66.42 | |
![]() |
47373 | Non-Coolant Through | Right Hand | 125 mm | Spiral | 184 mm | 16.25 mm | 118° | Conventional Point | €83.40 |
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Contact us
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We're available Monday through Friday, from 07:30 until 17:00.
CHICAGO-LATROBE 47504 Jobber Length Drill Bit, 5/16 Inch Size Size, 3-3/16 Inch Flute Length
€13.55 /unit




