Aircraft Tool SupplyCountersink Kit W/Pilot Cutter

Q: what does the number stand-for for the countersink cutter? sometime is #40, #21, sometime is 1/4", I need 1/8" or 5/32", do you have?

The number is standard drill size. #40 being slightly larger than 3/32" and #30 slightly larger than 1/8". A quick google will give you a conversion chart. They do also sell them in standard sizes like 3/32 or 1/4, but you may have to contact ATS directly.

Q: Although this seems to be used for rivets on aircraft, can it also be used on solid aluminum and steel millwork projects for flat head machine screws?

Hello, Unfortunately this item will not work for the purpose you are proposing. These pilot cutters are 100 degree 3 flute cutting edge and I believe if you are using AN screws they will require a 82 degree cutter which we do not sell.

Q: What is the Thread size of the cutter's shank? (IE 1/4-28 ?)

It looks like 1/4" 28. I don't have any fine thread nuts around. It catches the first thread on 1/4 20 but won't go any further.

Q: Is it 60 degrees or, like most countersinks, 80 degrees? They don't say in the description.

100 degree counter sinks -- for standard aviation rivets AD426-xxxx

5.0/5

Product ID: 267745733

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Details

Material
metal
Shank type
Straight
Brand
Aircraft Tool
Tool flute type
Spiral
Surface recommendation
Metal

🔩Straight Shank Type

✈️Spiral Flute Design

🛠️Metal Surface Ready

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Aircraft Tool Supply Countersink Kit W/Pilot Cutter

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Description

🔧 Elevate Your Craftsmanship with Precision!

DURABLE CONSTRUCTION - Crafted from high-quality metal for long-lasting performance.
USER FRIENDLY DESIGN - Straight shank type for easy handling and precise control.
PRECISION ENGINEERING - Achieve flawless countersinks with our expertly designed pilot cutter.
VERSATILE APPLICATION - Perfect for metal surfaces, ensuring a professional finish every time.
ESSENTIAL TOOL FOR PROS - Elevate your toolkit with this must-have for any serious craftsman.

Aircraft Tool SupplyCountersink Kit W/Pilot Cutter

Specifications

Tool Flute Type	Spiral
Shank Type	Straight
Surface Recommendation	Metal
Material Type	metal

Have a Question? See What Others Asked

what does the number stand-for for the countersink cutter? sometime is #40, #21, sometime is 1/4", I need 1/8" or 5/32", do you have?

Although this seems to be used for rivets on aircraft, can it also be used on solid aluminum and steel millwork projects for flat head machine screws?

What is the Thread size of the cutter's shank? (IE 1/4-28 ?)

Is it 60 degrees or, like most countersinks, 80 degrees? They don't say in the description.

Common Questions

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Aircraft Tool SupplyCountersink Kit W/Pilot Cutter

Details

Description

Specifications

Have a Question? See What Others Asked

Common Questions