XF series CARBIDE STRAIGHT FLUTE DRILL BITS FOR WORK HARDENED STEELS 42- 65 ROCKWELL
#36 – #65 Straight Flute Carbide Drill Bit
Made in USA
Superior oxidation resistance provides unparalleled performance in high temperature machining.
Micro-hardness 3600 Vickers. Thermal Stability (750 deg. C or 1562 deg. F) Coefficient of Friction .45
XF-Series Solid Carbide Straight Flute Drill Bits are manufactured in the USA from premium C2 solid carbide and are engineered for drilling work-hardened steels from 42–65 HRC (Rockwell C). The straight flute design provides exceptional rigidity, accuracy, and wear resistance, making these drills ideal for applications where conventional twist drills often fail.
These drill bits are a trusted solution for removing broken bolts, studs, taps, and screw extractors (Easy-Outs®), as well as drilling hardened tool steel, die steel, dowel pins, and other difficult-to-machine materials. Their rigid straight flute geometry minimizes deflection while delivering precise, controlled drilling in the toughest materials.
These are the best drill bits you can use for drilling out broken bolts and fasteners. Also great for drilling out broken-off easy outs! When only the best will do
| #36 (0.1065) Carbide Straight Flute Terminator Drill Bit | HR-470-0.1065 |
| #37 (0.1040) Carbide Straight Flute Terminator Drill Bit | HR-470-0.1040 |
| #38 (0.1015) Carbide Straight Flute Terminator Drill Bit | HR-470-0.1015 |
| #39 (0.0995) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0995 |
| #40 (0.0980) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0980 |
| #41 (0.0960) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0960 |
| #42 (0.0935) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0935 |
| #43 (0.0890) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0890 |
| #44 (0.0860) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0860 |
| #45 (0.0820) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0820 |
| #46 (0.0810) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0810 |
| #47 (0.0785) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0785 |
| #48 (0.0760) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0760 |
| #49 (0.0730) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0730 |
| #50 (0.0700) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0700 |
| #51 (0.0670) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0670 |
| #52 (0.0635) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0635 |
| #53 (0.0595) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0595 |
| #54 (0.0550) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0550 |
| #55 (0.0520) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0520 |
| #56 (0.0460) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0460 |
| #57 (0.0430) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0430 |
| #58 (0.0420) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0420 |
| #59 (0.0410) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0410 |
| #60 (0.0400) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0400 |
| #61 (0.0390) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0390 |
| #62 (0.0380) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0380 |
| #63 (0.0370) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0370 |
| #64 (0.0360) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0360 |
| #65 (0.0350) Carbide Straight Flute Terminator Drill Bit | HR-470-0.0350 |
Features
- Premium C2 solid carbide construction
- Made in the USA
- Designed for drilling 42–65 HRC hardened steels
- Straight flute design for maximum rigidity and precision
- Excellent wear resistance and extended tool life
- Ideal for removing broken bolts, taps, studs, and screw extractors
- Available in Number Sizes #36–#65
Made in USA

