Drilling? Options are a good thing!
What size do you like to drill? Do you like to start off small then work up to a bigger size? Our Bushing Clamps are fitted with hardened-steel drill bushings for long, accurate life, the heart of this product is the taper. The tapered surface is a high-tolerance feature, so while in use, please use caution and prevent damaging this area.
Size: Description
- 1/8 (.1250): Use for preferred extractors.
- 3/16 (.1875): Use for preferred extractors.
- #7 (.201): Minor diameter for the m6x1.0.
- 1/4 (.250): This size is perfect for drilling most of the m8x1.25 fastener; this will leave a .0078 wall to the minor diameter intact. Helical Insert Tap Drill size for m6x1.0.
- 17/64 (.2656): Minor Diameter for the m8x1.25 Note: Having used the 1/4 Bushing Clamp, this size will help cut out the remaining thread.
- 5/16 (.3125): Minor diameter for the 3/8-16.
- P (.323): Helical Insert Tap Drill size for m8x1.25. Used as a guide for the M8x1.25 tap for perpendicularity.
- 11/32 (.4348) Minor diameter for the M10x1.25.
Bushing Clamps

Bushing Clamp 1/4
This size is perfect for drilling most of
the m8x1.25 fastener; this will leave a
.0078 wall to the minor diameter intact.
Helical Insert Tap Drill size for m6x1.0

Bushing Clamp 17/64
Minor Diameter for the m8x1.25 Note: Having used
the 1/4 Bushing Clamp, this size will help cut out the
remaining thread.
Hardware/Drills and Taps
To browse discrete products or order replacement parts, please see the following links:

Custom Case
Available for new and returning customers. We now offer the ability to protect your tools in laser cut foam lined plastic cases. E-mail your request and specify what product you have or use your order to show us what you need. Some orders may require more than one case. Contact us to see what you can fit. Please allow up to 24 hours for your order to ship.

Laser Engraving
Do you want to personalize your tools? Maybe add your name or any other text on them? We will place the information provided on the best suggested area of the tool. Use the "Contact us" tab on the left and submit a 50 characters max after your order. Engraving will not be done if not purchased.