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Hardened Undersized High-Speed M2 Tool Steel Rods

- Yield Strength: Not Rated
- Hardness: Rockwell C60 (Very Hard)
These rods, also known as drill blanks, have an undersized diameter for machining your own jobbers'-length drill bits. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Dia. | Dia. Tolerance | Drill Bit Size | Lg. | Mechanical Finish | Straightness Tolerance | Each | |
6.25mm | -0.0050mm to 0.0000mm | 6.25 mm | 4" | Precision Ground | 0.012" per ft. | 00000000 | 00000 |
Helical Inserts with Installation Tools

Inserts come with a through-hole tap and installation tool. Also known as Heli-Coil inserts, they have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw.
Thread Size | Thread Pitch, mm | Thread Spacing | Installed Lg., mm | Drill Bit Size | For Max. Hole Dia. | No. of Inserts Included | Includes | Each | |
18-8 Stainless Steel—Right-Hand Threaded | |||||||||
---|---|---|---|---|---|---|---|---|---|
M6 | 1 | Coarse | 6 | 6.25 mm | 1/4" | 10 | Drill Bit, Through-Hole Tap, Installation Tool | 000000000 | 000000 |
M6 | 1 | Coarse | 9 | 6.25 mm | 1/4" | 10 | Drill Bit, Through-Hole Tap, Installation Tool | 000000000 | 00000 |
M6 | 1 | Coarse | 12 | 6.25 mm | 1/4" | 10 | Drill Bit, Through-Hole Tap, Installation Tool | 000000000 | 00000 |
M6 | 1 | Coarse | 15 | 6.25 mm | 1/4" | 10 | Drill Bit, Through-Hole Tap, Installation Tool | 000000000 | 00000 |
M6 | 1 | Coarse | 18 | 6.25 mm | 1/4" | 10 | Drill Bit, Through-Hole Tap, Installation Tool | 000000000 | 00000 |