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T6H, T7H, T8H, T9H, T10H - vs - TR6, TR7, TR8, TR9, TR10

Is the T6H, T7H, T8H, T9H, T10H -bit identical to the (torx security) TR6, TR7, TR8, TR9, TR10 -bit? And what is the reason for the difference in naming?

I’m deciding whether to buy a precision screwdriver kit.


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The only difference is the security screws have a pin so the Torx TR bit have a hole to get around the pin, unlike the standard Torx drivers which don't.


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The difference is the T6H is the torx security bit, and the T6 is the regular torx bit. I think you can use the torx security bit in the regular torx, but you definitely can’t use the standard torx driver in the security screw.

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My question is if (for ex.) the bit labeled as T6H is the same as one labeled TR6.


@Professional Amateur They’re not. The H one is the security bit, the non H one is the standard bit.


It's a matter of terminology, just observe the bit itself -- does the Torx bit have a hole in it? Then it's a Torx security bit. T6H (H probably means 'hole') and TR6 (tamper-Resistant) are equivalent.


It looks like the answer is yes but no one is giving a definitive answer. Simple is a TR8 the same as a T8H?


@oldturkey03 Seems like you are wrong if you look at the post below. And you did not give a definitive answer either.


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I just bought a set containing T6H and T8H bits and I can confirm they fit the TR6 and TR8 Torx Security Screws from the Mac Mini Late 2014 Hard Drive Replacement instructions. The T#H bits have a little divot in the center that accommodates the nib in the center of the security screws.

Does the "R" in TR6 mean "Regular"? Or does the "R" designate that it's a security screw? I have no idea and I wonder if some of the confusion on this thread stems from that "R". Regardless, the T#H bits do work with security screws.

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