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T40 bits, who makes the strongest?

O

Olafur

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You need heat, welder, and/or hammering to work these countersunk fasteners out after years in corrosive environment. They can destroy the best ph3/torx/hex bits on the planet with their big surface area contacting the rotor resulting in high friction...

And no- Snap On does not make the strongest bit sockets, neither do Hazet or PB Swiss you have to go to Japan to find the cream de la crème. One really good impact driver is made by Koken Japan - absolutely among the best toolmakers in the world. Koken bits (bitsockets) are about as good as it gets.
 

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ImportTuner

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M6erfan said:
Well Geoff here you go...

AG112H.jpg


And guess what? It comes with a T40 impact bit...

I have it, and like it!
Click to expand...

I have the same Koken Attack Driver and it only came with 4 bits (2 phillips and 2 slotted) :(
 
N

ND80

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I twisted off a t55 trying to get the rear caliper off my pick up.
Went and picked up the napa one i think they are carlyle brand.
It worked great and reasonably priced too.

Not sure if they are impact rated though...
 
M

M6erfan

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Olafur said:
You need heat, welder, and/or hammering to work these countersunk fasteners out after years in corrosive environment. They can destroy the best ph3/torx/hex bits on the planet with their big surface area contacting the rotor resulting in high friction...

And no- Snap On does not make the strongest bit sockets, neither do Hazet or PB Swiss you have to go to Japan to find the cream de la crème. One really good impact driver is made by Koken Japan - absolutely among the best toolmakers in the world. Koken bits (bitsockets) are about as good as it gets.
Click to expand...

I wish I could read Japanese, I can't make heads or tails of those charts...
 
V

Vinko

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apex makes great bits. Dunno if they make a torx 40 but I'd guess so. I've found Apex superior to SnapOn
 
Z

zcbauer89

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Lisle makes a good handheld impact driver, which is rebranded for some other companies. The Proto is good, and exactly the same thing as Mac. I have no experience with the Snap On.
 
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SantaAna12

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Olafur said:
You need heat, welder, and/or hammering to work these countersunk fasteners out after years in corrosive environment. They can destroy the best ph3/torx/hex bits on the planet with their big surface area contacting the rotor resulting in high friction...

And no- Snap On does not make the strongest bit sockets, neither do Hazet or PB Swiss you have to go to Japan to find the cream de la crème. One really good impact driver is made by Koken Japan - absolutely among the best toolmakers in the world. Koken bits (bitsockets) are about as good as it gets.
Click to expand...

I would like to read this chart too. Can you translate it first before posting please? If your able (chrome)? I tried, and no translate option.
 
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JonDick13926

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The proto impact is really good, but the bits dont seem to last in my experience. They dont break, they deform. After about 6 rotors the philips bit I use is almost useless due to severe twisting. I havent checked for a replacement, but if they're cheap ill buy a bunch and I guess it wont really matter. Also thought about terminator bits.
 
A

alpaca

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matco makes some impact torx that pretty nice

I've twisted a t-20 but a 12v impact is a lot of power for that tiny of a bit. If they twist on you you can always exchange them they are 1 piece
 
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JeepsAreBuilt

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I think those t-40 bits all get fragile over time and use. So, they all will break. For example, a rusted/stuck ford pickup bed bolt that takes a t-50 bit. a Old used snap-on t-50 will break by trying to get it out, where a New snap-on t-50 will let you keep hammering on it with the impact and get it loose.
 
O

Olafur

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M6erfan said:
I wish I could read Japanese, I can't make heads or tails of those charts...
Click to expand...

Here is the relevant part:


1:Brand name

2:type

3:size

4:Hardness Rockwell scale , https://en.wikipedia.org/wiki/Rockwell_scale

5: Din standard torque requirement for this size in Newton-meters [N-m]

6: Max torque recorded during test in N-m

7: How much over the DIN standard the MAX torque is.

8: No idea since I don't read Japanese either. :headscrat
Possibly measurement of how much the bit twisted during the test.
 
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WhiffySpark

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zcbauer89 said:
Lisle makes a good handheld impact driver, which is rebranded for some other companies. The Proto is good, and exactly the same thing as Mac. I have no experience with the Snap On.
Click to expand...

The lisle driver is junk. They constantly break. But they're cheap

I'm curious to what warranty turn around time is for koken?
 
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M6erfan

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Olafur said:
Here is the relevant part:


1:Brand name

2:type

3:size

4:Hardness Rockwell scale , https://en.wikipedia.org/wiki/Rockwell_scale

5: Din standard torque requirement for this size in Newton-meters [N-m]

6: Max torque recorded during test in N-m

7: How much over the DIN standard the MAX torque is.

8: No idea since I don't read Japanese either. :headscrat
Possibly measurement of how much the bit twisted during the test.
Click to expand...

Thank you very much.

Interesting that the KTC NEPROS won this test by a pretty fair margin. I wonder if OAL could have some bearing on the results?
 
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Skin

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Well, first the chart is for hex bits, not torx. And what may be playing a part is whether the bits are Ti coated or not. For example Nepros are, Snap-On and Koken aren't.
 
M

M6erfan

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Skin said:
Well, first the chart is for hex bits, not torx. And what may be playing a part is whether the bits are Ti coated or not. For example Nepros are, Snap-On and Koken aren't.
Click to expand...

Huh. I wouldn't think that a Ti coating would add much to structural integrity of the tool.
 
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Skin

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M6erfan said:
Huh. I wouldn't think that a Ti coating would add much to structural integrity of the tool.
Click to expand...

No I don't think so either, I think its just for wear resistance as opposed to structural rigidity but im not sure. The Snap-On "heavy duty" torx are also Ti coated.
 
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Jason280

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The only Torx bits I have worn out/damaged are the 1-pc designs, never had any trouble with the 2-pc styles when used properly.
 
M

M6erfan

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ImportTuner said:
Thanks for the info .. can you buy bits for the Koken Attack Driver?
Click to expand...

As mentioned you can buy the bits separately and I considered this when I was shopping for my Attack Driver. When I did the math I came out ahead buying the set with more bits, rather than buying them separate. Also, I liked that they all were in the same case with the larger kit...

The larger AG112H kit may cost 25% more, but IMO the value is better
 
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