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[golly]

Hi All, does anyone know where I can get 2 x retaining screws for Brake Disc for 2001 V6
Omega ? ....as usual, any advice/recommendations will be gratefully received.
Thanks Glen

[Doctor Gollum]

Should be pence over the counter from VX or any motor factor.

Hell,  they may even sell them in Helfords.

[Nick W]

Standard countersunk metric hardware.
It's been a while since I had one in my hand, but they're probably M6.
£0.10 each would be expensive....

[Andy B]

Standard countersunk metric hardware.
It's been a while since I had one in my hand, but they're probably M6.
£0.10 each would be expensive....

though they'll be inexpensive, I'd reckon a bit more than 10p
https://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2380057.m570.l1311&_nkw=m6+countersunk+screws&_sacat=0

[Nick W]

Standard countersunk metric hardware.
It's been a while since I had one in my hand, but they're probably M6.
£0.10 each would be expensive....

though they'll be inexpensive, I'd reckon a bit more than 10p
https://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2380057.m570.l1311&_nkw=m6+countersunk+screws&_sacat=0

Buy them from a fastener shop, where they have boxes of them - I bought a 100 M6x20 BZP hex screws for £2 and a box of a thousand was under a tenner.
Know what you want and ask for it so you don't come across as a time waster: eg countersunk M6x20screw, 2 off. They don't care what it's for, and knowing won't help them or you.
There's a good chance they won't charge you at all for that transaction

[Andy B]

....
Buy them from a fastener shop, where they have boxes of them - I bought a 100 M6x20 BZP hex screws for £2 and a box of a thousand was under a tenner.
Know what you want and ask for it so you don't come across as a time waster: eg countersunk M6x20screw, 2 off. They don't care what it's for, and knowing won't help them or you.
There's a good chance they won't charge you at all for that transaction

When I last bought fasteners, instead of getting them from stores  they had a minimum cost order of £1 .....

[dave the builder]

clicky 8 stainless ones delivered for £3.45

Not 10 Pence each BUT .... unless you live next to a fastener shop or parts/motor factor 

 then you're probably going to have to fire up the Omega @ 50 pence per mile 
and waste time going to a shop to buy some bolts (time is money)

it's not an item that requires being fitted until the wheels are next off

so waiting for delivery is not an issue *

* unless you live in Brackley/ as they may never arrive 

[LC0112G]

Pretty sure on my car they aren't the old style countersunk screws, like wot they are on the Carlton/Senator. I think they changed them for the same as is on the front - a flat head allen key jobby made from cheese. That also tallies with the picture in EPC, although the description does say CSK screw?

[johnnydog]

It may depend on the model or era, but the retaining bolt / screw on my 2.6 /3.2 vented discs is certainly not a countersunk tapered screw as suggested....
As Andy has stated they are a flat seat Allen key head bolt / screw, with a shoulder before the start of the thread.
GM part no 90278945, size M10x1.25
There is a recess of approx 1/8" deep on the hub area of the disc to accommodate it rather than a tapered recess with a countersunk fastener.

 https://www.bestpartstore.co.uk/90278945-oen

[Steveh]

I saw a  tip to help getting them out (any car) , take off wheel then put wheel nuts back on and tighten and it takes pressure of screws. +You get new screws with some new discs.

[Enceladus]

The M6 x 14 countersunk retaining screws were for rear discs on Senator B so probably also for Omega A/Carlton (can't remember). Picture here.

The Omega B & B2 rears use M10 x 1.25 x ?? bolts. With a flat seat and not tapered, exactly as described by johnnydog above. They're available here @ £3.39 ea delivered. Still cheaper than bestpartstore.co.uk suggested above, who charge £8.45 delivery and are just a clone of autodoc.co.uk.

I doubt if you'll find the bolts in a standard fastener suppliers. The head is especially shallow so that it sits flush in a recess on the disc. It's an automotive special.

But why do you want to replace them in the first place? Reuse the existing bolts. All the retaining bolt does is hold the disc in place to aid assembly/disassembly. The clamping of the disc onto the hub is done by the wheel bolts.

[johnnydog]

I can only presume the allen key head has because a little chewed because previously they have been overtighten and / or fitted dry.
As you are thinking of replacing them, they can obviously still be removed, so as an alternative, you could cut a slot across the head, and in future use a wide flat bladed screwdriver to remove them. Only you will see them, and they will be easier to remove next time, especially with the thinest smear of copperslip on the threads.

[Doctor Gollum]

They're a Torx. T35 or T40 from memory.

[Enceladus]

A hex Allen key is required, not a Torx. Pretty clear in the picture I posted earlier. There is a shoulder under the head which sits in the hole in the disc. The shoulder is a slightly larger diameter the the threaded bit to ensure a snug fit in the disc. The bolt only needs to be renewed if the hex socket in the head is damaged.

[johnnydog]

They're a Torx. T35 or T40 from memory.

You are incorrect 
It is a Allen key (hex) head as Enceladus and I stated.....