Torx screws

Jim

The reputable toolholder manufacturers sell the screws as spares.

RS (Radiospares) seem to describe them confusingly as "steel 6 lobe csk head screws" rather than Torx.

Regards, Tony

Talk to Jenny, at JB Cutting Tools in Sheffield, (She attends the better ME shows)01246 418110 (email snipped-for-privacy@btinternet.com) --

Chris Edwards (in deepest Dorset) "....there *must* be an easier way!"

Chronos do spare screws for "Glanz" tool. Part No. TXS01 (key TXK01) - these mic. up at

Brian

On or around Thu, 23 Aug 2007 12:44:41 +0100, "Alan Marshall" enlightened us thusly:

don't talk to me about torx screws... Bloody people make them out of too-soft material and you end up with a nice round hole.

Personally, I replace 'em with decent quality allen screws or hex-head bolts as appropriate. On vehicles these days I tend to favour A2 or A4 stainless as replacement bolts, some hope that they come undone again later.

A2 or A4 stainless? Yes they'll certainly come undone, maybe not when intended and also completely without the use of tools.

On or around Fri, 24 Aug 2007 12:27:43 +0100, Mike enlightened us thusly:

not on my vehicles, there's plenty of mud and other crud to make 'em stay put.

seriously, though, if fitting nuts I mostly either use nyloc or spring washers. Doesn't apply when putting them into blind holes, but you can still put spring washers on.

which raises an interesting point - it's common practice to put plain washers under spring washers... why?

Even presumably when they are in two pieces due to other failure mechanisms? Must be some unique super sticky loctite permanent retainer grade mud you have. Does it also raise the mechanical properties of A2 and A4 stainless to equal that of a grade 8 or greater fastener? :)

To give a warm feel in your pants. Spring washers have been proven to do exactly the opposite function to that intended ....unless the intended function was for the fastener to come loose under vibration conditions when they function *exactly* as intended.

The thread you want is an M2.5 ! I needed some so I went to Sandvick the suppliers of the insets that I use and ordered some. No problem to them, the screws including some more inserts arrived the next day via DHL from the Phillipines.

Bob

On or around Fri, 24 Aug 2007 17:11:19 +0100, Mike enlightened us thusly:

If you look into it, tensile strength of A2-70 is a bit lower but most bolts on vehicles aren't 8.8 and indeed most are well over-specified for what they're doing.

I did find a few 12.9 in the front axle fittings on the LR 110 recently.

A4-80 are pretty similar spec to 8.8. Frankly, I rarely find properly-fitted and tightened bolts come loose.

Thanks all for the advice.

Alan