PRODUCT SPECIFICATION
USA MADE 3/8" HSS BLACK & GOLD JOBBER LENGTH DRILL BITS - 6 PACK
Made in the USA for demanding shop and production use, these 3/8" Black & Gold Jobber Length Drill Bits are precision-ground from solid, heat-treated M2 high-speed steel and hardened to HRC 64 for dependable cutting performance and wear resistance. The one-piece design delivers a durable, consistent cutting tool built for repeated drilling in steel, sheet metal, aluminum, PVC, MDF, oak, and maple.
A 135° split point helps the bit start accurately with less walking, while spiral flutes help carry chips out of the hole as you drill. The three-flat straight shank provides additional chuck engagement to help resist slipping under load, while the jobber-length design maintains a practical balance of reach and rigidity. The 6-pack keeps replacement 3/8" bits ready for fabrication, maintenance, production, and everyday shop work.
Product Specifications
| Specification |
Details |
| Size |
3/8" (0.375" / 9.525 mm) |
| Material |
M2 High-Speed Steel |
| Hardness |
HRC 64 |
| Finish |
Black & Gold |
| Point |
135° Split Point |
| Length Class |
Jobber |
| Overall Length |
5" |
| Shank |
Three-Flat Straight |
| Shank Diameter |
3/8" |
| Quantity |
6 Pack |
| Country of Origin |
USA |
Features
- Made in the USA
- Heat-treated M2 high-speed steel for dependable everyday drilling
- HRC 64 hardness for strength and wear resistance
- Precision-ground from a solid one-piece blank for consistent drilling performance
- 135° split point helps reduce starting wander
- Spiral flutes help clear chips as you drill
- Three-flat straight shank helps resist slipping in the chuck
- Black-and-gold finish
- Jobber-length design balances reach and rigidity
- 6-pack keeps replacement 3/8" bits ready for repeated use
Applications & Performance
- General-purpose drilling in mild and low-carbon steel
- Sheet metal drilling with proper work support
- Aluminum drilling with appropriate speed, feed, and chip clearance
- PVC drilling where heat is controlled
- MDF drilling with proper backing and dust control
- Oak and maple drilling with support at the exit surface
- Production, fabrication, maintenance, repair, and general shop drilling
- Useful as a replacement size where repeated 3/8" holes are required
The 135° split point helps establish the hole with less walking, while the spiral flutes provide a path for chips to move away from the cutting edges. The three-flat shank provides additional chuck engagement compared with a fully round shank and helps reduce slipping during drilling.
Materials
- Mild and low-carbon steel
- Sheet metal
- Aluminum
- PVC
- MDF
- Oak
- Maple
Machine Compatibility
The 3/8" three-flat straight shank is designed for conventional drill chucks that securely grip the bit. Confirm secure chuck grip, the machine’s drilling capacity for the material and a suitable speed range being drilled.
Compatible examples include:
-
RIKON® 30-212VS Drill Press
-
WEN® 4214T Drill Press
-
Grizzly® G7943 Drill Press
-
Grizzly® G7942 Drill Press
-
Makita® XFD13Z Drill/Driver — use when the installed chuck securely grips the 3/8" shank
-
Milwaukee® 3403-20 Drill/Driver — use when the installed chuck securely grips the 3/8" shank
-
Milwaukee® 3404-20 Hammer Drill/Driver — use when the installed chuck securely grips the 3/8" shank; select drilling-only mode
-
DEWALT® DCD800B Drill/Driver — use when the installed chuck securely grips the 3/8" shank
-
Bosch® GSR18V-400 Drill/Driver — use when the installed chuck securely grips the 3/8" shank
-
Bosch® GSR12V-300 Drill/Driver — use when the installed chuck securely grips the 3/8" shank
For handheld drill/drivers, confirm the installed chuck securely grips the three-flat shank before use.
Safety Tips
- Wear appropriate eye protection when drilling.
- Secure the workpiece with suitable clamps or a vise before drilling..
- Keep loose clothing, hair, and other items away from rotating parts.
- Use rotary drilling mode and turn off hammer action on hammer drills.
- Match drilling speed and feed pressure to the material and bit size.
- Clear chips as needed and avoid excessive heat buildup.
- Support sheet metal, wood, and plastic properly to control breakthrough.
