External Torx Bolt, Why ?

HTSS_TR

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Bought the made in USA Lisle 26750 Torx Socket 7-pieces Set for $12. Didn't use it yet, but initial inspection seems to be high quality. So happy that it is not made in China.
 
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Originally Posted By: sciphi
Almost every bolt on the engine/transmission in my Cruze is external Torx. It must be a European thing. The HF external Torx set is now in my toolbox. Hopefully it doesn't need much use.
Saw my first one on my ole 1991 Corolla exhaust manifold to ex. pipe more than ten years ago while replacing my pipe. Stopped the job in its tracks.
 

rdh

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Oct 19, 2012
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Some German cars BMW use a low profile torx bolt and the standard external torx will strip. Toyota,Nissan and Subaru also use them. Snap On makes a E12 FLCC120 and EPL10,ep18,EPL20 Cta 9575 Google Koken Tools Japan. The sell a set of EPL sockets and Low profile normal torx.Look at pictures for explanation. CTA 9650 is a set of external torx plus Amazon sells cta You can use a grinder to remove the counter sink but torx plus are different.
 
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Originally Posted By: johnachak
Less chance most people will try to fix their car. Mercedes isnt fond of their owners fixing their cars obviously.
Ever worked on one? It's a great experience, actually.
 
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External Torx bolts are great because they can candle tremendous torque (compared to hex or regular Torx) for the same size bolt head. They are also far less likely to stick to the driver. The not getting stuck is probably the part that makes them well suited for robots in a factory. I hate them because I have only two socket sets and a couple of stray wrenches, but that's my fault not theirs.
 
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Hello to the 20, or so, people who have jumped into this thread. I asked the OP's question myself. "What's the benefit?", is how I approach these questions. My guess is that the External Torx bolt head is smaller at any given strength. I base my guess on seeing E-TORX fasteners in confined locations on exhaust manifolds. On applications which are not confined at all, like the underside of the ABS unit in my car-a totally smooth bottom-of-a-box, the E-TORX head simply takes less metal to make vs. a hex head. Other reasons relevant to manufacturing economies are things I wouldn't argue. ALSO: To dOOdfOOd and yon yon, It seemed to me that the E-TORX could take a lot of torque and be less likely to slip out of the wrench when I had to change a front wheel bearing. AND: To dparm, Regarding the triple square system; I agree, where is the benefit to that system? Kira
 
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My 1995 Escort has three external torx studs that hold on an exhaust shield. The purpose is to have something that you can potentially unscrew the nut and remove the nut over the stud end while having a wrench on the nut and a torx socket on the stud. Of course it's all rusted together now.
 
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7 years after the last post in this thread, I hope it's understood what they're for.
 
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