A 25 Torx bit is 25 What???

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Looks like Phillips would drive them in, but not grab on reverse without the right tool.
 
toolmanmike said:
Hate to bust up the party but have you seen any of these?View attachment 1715049178
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Yep. That's sort of the next gen Torx...

The MORTORQ® SUPER Spiral Drive System is the most advanced industrial drive system available today. Featuring an exceptionally shallow recess, it sets the standard for strength and functionality. Its recess geometry provides full driver contact over the entire mating surface of the recess wings. This results in extreme high-torquing capability without risk of damage to the fastener or surrounding head area. Minimal head height reduces the weight of fastened components. Made with less material and light in weight.
 
Ddaddy said:
Yep. That's sort of the next gen Torx...

The MORTORQ® SUPER Spiral Drive System is the most advanced industrial drive system available today. Featuring an exceptionally shallow recess, it sets the standard for strength and functionality. Its recess geometry provides full driver contact over the entire mating surface of the recess wings. This results in extreme high-torquing capability without risk of damage to the fastener or surrounding head area. Minimal head height reduces the weight of fastened components. Made with less material and light in weight.
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There you have it. A better mouse trap!
 
I think those are used in jails and prisons and federal parks to keep p from breaking out, stealing, and damaging things
 
Phily said:
I think those are used in jails and prisons and federal parks to keep p from breaking out, stealing, and damaging things
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Jails and prisons?
 
Ya cause they go in but don't have a stop for being able to reverse the screw to get it out
 
I've been to jail a few times to say the least lol. Never prison tho. I try try really really hard not to do anything illegal. That DUI got me last time but no jail time at least lol
 
Phily said:
I think those are used in jails and prisons and federal parks to keep p from breaking out, stealing, and damaging things
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Nope, those are not intended to be tamper resistant or security fasteners. They are designed for maximum torque going in or out using the minimum head thickness. They are the next generation of fastener designed to save weight and still provide maximum torque strength.

Mortorq.jpg
 
Lol well they looked funky like em. I did look up the screws they use and they are diff. But those bits look funky lol
 
These are actually a very advanced design. The offset in the head configuration is designed to maximize torque load in each direction. Going in, the torque load peaks at the sharply at the end when the fastener hits home. Upon removal, the torque is at it peak when the fastener is first being removed and diminishes rapidly after that as the bolt comes out. The difference in design clockwise vs. counter clockwise is based on the torque application curve to provide the best contact and transfer of energy possible.
 
Ddaddy said:
I can answer the question.

The Torx numbering system was derived based on 2 things, the diameter of the screw fastener to which the head was to be applied and the torque range for that diameter screw fastener. This then resulted in a universal difference in the point-to-point diameter of the Torx head and the screw fastener diameter.

Torx numbering is based on group ranges. 1-10, 20-30, 40-5, etc. The first digit (0,1,2,3 etc) defines the group and the required difference in Torx head P-P diameter vs. screw fastener diameter. The second number defines the Torx size within that group range.

Here is a quick table I put together to show how it works...

View attachment 1715049172

This is also why there aren't Torx bits in every size within a group. Since the threaded fastener diameters don't vary that much within a group range as the sizes get larger, there isn't a need for every possible size within that range.

So there you have it, the numbers do have a logic. :D
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Just saw this. Wow, the right answer, but there were so many other good ones.
 
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