Help please rear valance screws

Hi all, I have to email my hardware store with my list of hardware and they will leave it outside for me to collect - so I need to know what the pitch of thread is for the six screws that hold the rear valance in place.
Does someone know what they are?
The manual does not tell me.
Pleases and thankyous Karl
 
I do not know the original thread. When I replaced my valance after paint I re tapped the holes M5 and used S/S screws. The threaded inserts were very hard and difficult to tap though.
 
At a guess I'd say what was there, was 1/4unf x 3/4long.
Do you have any of the bolts, to measure?

I'm similar to Cobraboy, the threads had long gone, I use M6 Rivnuts.
You have a fantastic hardware store it they keep anything imperial in stock. My local fastener shop, called 'Nuts and Bolts Ltd' don't stock imperial bolts, they just have what's left over from years ago. If you need a 3.5in x 15/16 BSW they'll have that, but a 1/4unf no. Sadly I have to send away for imperial fasteners.

Good luck in your search and hopefully someone will give you a definite answer.
 
thanks Gargo, i do have the screws to measure but dont know what to measure , the width of the thread? the threads in the "captive nut" type of clip are fine, were rusty like the screws but soaked them in some acid and they like new. the screws have got worn crosses so have to replace them. i have replaced them with stainless ones years ago on my s1. The hardware store is great for imperial , the same family has owned it sice adam was a owboy and stock oddball stuff too.
 
If you have the screws you have the answer, not me.....
The diameter of the thread is, is the diameter of the screw. I'd expect this to be some multiple of 1/16, I.e. 3/16, 1/4 etc. I'm betting on your screws are 1/4"
1588062227403.png

Next you need to measure the pitch. Not as hard you first think.
Count either the number of threads in 1inch.
Or measure the length of 10threads.

If the screw is 1/4 diameter and UNF you'll have counted 28 threads per inch. (or 10 threads are .35in or ~9mm)
If the screw is 1/4 diameter and UNC you'll have 20 threads per inch (or 10 thread are 1/2in)

Then measure the length of the screw.

Spec the screw by dia, thread type and length. E.g. 1/4 UNF x 1in

BUT the best thing to do is pick your best nut and drop to the hardware store then return later to pick up the screws that fit. If it's been acid dipped it will be clean.;) Which is probably what you normally do.

Note: UNF and UNC only go down to 1/4 dia, if the screws are less that 1/4 you'll be into BSF which have the following threads per inch
7/32 BSF dia (good luck measuring that by eye) has 28 threads per in.
1/4 BSF has 26 threads per in, so close to the UNF you can see how we all wrecked threads when young. :mad:

However, I'm sure someone here can tell you the answer to you question if you wait long enough.

G.
 
According to the 2200 Parts book , if its 367207 you refer, its special screw 10 UNF X 1/2" LONG . according to my ZEUS tables , is 32 TPI and 0.190" dia. UNF below 1/4" are numbered 4,6,8 & 10 .
A 3/16 BSF might fit as its 0.1875" dia and 32 TPI
I have just put "10 UNF Screws" in Ebay and many options came up including stainless.
 
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Thanks for the info Gargo very informative , they are 3/16"
Roverp480 , i will have to reread your post :)
Nah..... im going to drop them off and they can match them and ill collect later
 
These can be bought for cheap in the different measurement systems. You can get a UNC/UNF/Metric set for less than a fiver, same for a whitworth set.
Takes out all the guesswork ;)
For what it’s worth I would have guessed 1/4 unf without checking too

4DCD8D73-ACAE-4D8A-A2B5-0119A37848E2.jpeg

Jim
 
I just pulled one out, I did remember correctly, I did use M5, so the originals must have been smaller than 1/4" as 1/4" equates to M6.
I was lucky to get mine out, they were all seized, the new ones are getting tight again, I will copperslip them.........as I've got the time :rolleyes:
 
hmm interesting . my rear valance as far as I can tell is simply held in place by self tapping screws .half a dozen under boot lid area and 2 ( missing at moment) lower edge that would screw through to rear wing. using plastic retainers of course. hmm I must have a look later and check out . what am I missing here ?
 
10 UNF X 1/2" LONG

If you've measure them at 3/16 dia then they are most probably 10UNF x 1/2, tell the HWstore that is what you think they are.
Once you go below 1/4 then imperial UNF go to a designated numbering system. 10UNF for 3/16 dia.

It's no wonder the French took over with their metric system.
Is that the time, 73 mins past the 64th hour, must go.
 
I replaced the original spire nuts with new, stainless steel ones. It meant using an Allen key to do them up but they looks very tidy.
These look the same:
10 BIKE FAIRING PANELS STAINLESS BOLTS + M6 6MM ZINC SPRING SPIRE C CLIPS U NUTS | eBay
(I don't like using metric fixings on the P6 but a pleased with these.)
That was the reason I re tapped to M5, except I went for a pan head slot to be more in keeping. The hex drive button head are a nice look though.
 
I got the right ones first off and I ask for 3/16 x 1/2 long and got 10/32 unf
Well done roverp480 :)
they're stainless machine screws with cross heads but the did give shakeproof (starlock) washers
That's ok I made a mistake and ordered 1/4 " bolts for the towbar lol
 
I got the right ones first off and I ask for 3/16 x 1/2 long and got 10/32 unf
Well done roverp480 :)
they're stainless machine screws with cross heads but the did give shakeproof (starlock) washers
That's ok I made a mistake and ordered 1/4 " bolts for the towbar lol
Oops,they didn't give me shakeproof washers
 
The six on the top are indeed 10-32 UNF. The only tricky part is the head is meant to be a truss style (low profile) with a Posidriv recess, and at best these days you'll find pan head with the Phillips recess. The two at the ends are special threads, essentially an acme thread.

Yours
Vern
 
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