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6542 Solid Cap Screw Counterbores
Premium HSS Solid Cap Screw Counterbore Set
Seven-piece set, three flute, high-speed steel, straight shank, premium quality. 6542 solid cap screw counterbore
SKU: 509S-0007
Features
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Main Features
Premium HSS Socket Cap Screw Counterbore Set
Bright finished, premium quality, packed in a premium aluminum fitted case.
Specification of Each Cap Screw Counterbores
Usage Scencario
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
Derek Maxwell
Reviewed in the United States on August 20, 2024
This is an Awesome product.
Zach T.
Reviewed in the United States on June 1, 2024
Haven't used these yet but I am not impressed with the sizes.M3-M6 have a pilot size that is in between a close fit and a normal fit, but M8, M10, M12 have oversized pilots.M3 + M4 + M6 have slightly undersized counterbore diameters, the rest are slightly oversized.Pilot Hole Sizes:Size - Close Fit - Normal Fit - Accusize PilotM3 - 3.4mm - 3.7mm - 3.4mmM4 - 4.4mm - 4.8mm - 4.5mmM5 - 5.4mm - 5.8mm - 5.5mmM6 - 6.4mm - 6.8mm - 6.6mmM8 - 8.4mm - 8.8mm - 9mmM10 - 10.5mm - 10.8mm - 11mmM12 - 12.5mm - 12.8mm - 14mmCounterbore Diameters:Size - Std. Counterbore Dia - Accusize Cutter SizeM3 - 6.5mm - 6mmM4 - 8.25mm - 8mmM5 - 9.75mm - 10mmM6 - 11.25mm - 11mmM8 - 14.25mm - 15mmM10 - 17.25mm - 18mmM12 - 19.25mm - 20mm
BLÜ INDUSTRIAL
Reviewed in Mexico on May 19, 2023
todo bien
Tanner Dennard
Reviewed in the United States on May 16, 2023
The counterbores are sharp and cut very nicely. Huge issue for me though is the pilots. The pilots are way oversized on every counterbore. For example the 3/8 counterbore pilot measures a crazy .405 instead of .375-.380. This leaves way to much wiggle room for me. Shoot it is larger then the call out for a 3/8 clearance drill free fit at .396. I ended up correcting this myself since I missed return window.
Bryan Charlton
Reviewed in Canada on April 11, 2022
Used then the first day I received them. Used for drilling and counterboring gears for mounting them on dies on a press. I have already recommended this set to my machinist’s in the shop and for anybody else! Get set to have!
Lee
Reviewed in Canada on March 17, 2021
Great product. Only used so far on aluminum but cut through it like butter.
foobar
Reviewed in Canada on January 23, 2021
The general fit and finish is OK. However when boring in aluminium the drill locks up and it's impossible to retract it again. At first i did not want to believe that, but it's reproducible. In a drill press. Small aluminium rings form around the relief behind the front guide, because the drill is not cutting but forming the metal. I was able to fix this with a more generous relief grind. Then everything works.
EngineerDave
Reviewed in the United States on May 18, 2020
Very nice counter bore set that you can get excited about. Mine came in a very nice aluminum case, not the wood case shown. Out of the case boring of aluminum made a beautiful counter bore for a hex cap screw!
Derek J. Christensen
Reviewed in the United States on March 29, 2019
Storage box organizer, good quality, arrived quickly
Amzol
Reviewed in Canada on February 24, 2018
Faboulous
Customer
Reviewed in the United States on December 21, 2016
Great to have
Nathan Van Bynen
Reviewed in the United States on October 25, 2016
Nice metric set, worked great and leaves a nice clean/smooth hole in 1018 steel.
Salvatore Oriti
Reviewed in the United States on April 20, 2015
The bits are good but the case is not. The case was cut wrong for one of the bits and it doesn't fit. The lid of the case also broke on mine.
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