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Accusize Industrial Tools
Metric HSS Solid Cap Screw Counterbore Set
Seven-piece set, three flute, high-speed steel, straight shank, metric
SKU: 508S-007M
Specification of Each Cap Screw Counterbores
Shank sizes: M3-5.5mm/.218", M4-7.9mm/.312", M5-7.9mm/.312", M6-12.7mm/.500", M8-12.7mm/.500", M110-12.7mm/.500", M12-15.8mm/.625"
Insert a bolt?
We often need to insert a bolt into a hole on a workpiece
Try Accusize Solid Cap Screw Counterbores
- Use a center drill
- Use a drill bit
- Use a solid cap screw counterbore
Recommended Cutting Parameters for Each Cap Screw Counterbores
Chris
2025-08-26 15:48:22
Bought these to create a M5 Counterbored hole for a project I am working on, I used a 12 speed drill press with a 5/8 chuck, WD-40 as a cutting fluid, the clearance hole was predrilled.
Net
2025-08-09 12:10:06
This delivered fast. Seem good. Havent used them as of yet.Will update when used
Dude guy
2025-07-11 13:00:49
These are amazing. Not just amazing because of the price, they are great countersinks, and the low price is an added benefit! Been utilizing countersunk cap head screws a LOT this past summer since buying these. If you are into building your own tooling, these are great to have. The trick to them is low rpm (500rpm or so) and match the through drill bit size to the guide tip on the countersink.
hugh lafever
2025-07-06 13:46:43
cuts really well & to size , fast delivery
Calibrator54
2025-07-05 12:11:19
used to using low-profile cutters but these work as good; just needs more room
Timothy C White
2025-04-01 10:06:21
clears those cap screws
Jacob C.
2025-03-08 12:03:22
The media could not be loaded.
RT
2025-02-22 10:53:10
Very low quality appearance. Will update with a performance report as soon as I get a chance to try themUpdate: they actually cut pretty well on 6061 aluminum. I upgrade my 1 star to 3 stars
Conrad Brenko
2025-01-26 12:00:47
Haven't used them yet
Landslide
2025-01-12 17:37:27
Arrived as per description. Adequate quality for counter boring materials.
Clint Hildebrand
2025-01-11 10:09:31
These were exactly what I needed, and at a great price.
Miss.TD
2024-12-31 17:56:06
Do the job right
Slurpee Guy
2024-12-20 10:07:51
Works fine on aluminum. Haven't tried with steel.
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