Timing Cover Screws for Pre-Unit Triumphs

[sprangerny]

Can't seem to find anyone who has the correct bolts for a 1948 Triumph (3T Deluxe) timing cover. Questions: are they suppose to be: PosiDrive (Phillips)? or Fillister Head (slotted)? And what thread pitch is original? Here there are 3 different lengths specified in the parts book:

qty. 6: E452 (short)
qty. 2 E427 (med)
qty. 2 E1049 (long)

Can anyone confirm the correct 'head'? And which suppliers might have the best chance for having them in stock?

Many thanks,
Doug Spranger
3T-Timing Cover Side.jpg

[kitabel]

26 TPI, probably 1/4-26

[C.Flint]

Filister head. Different lengths are needed for the different holes. Try British Fashioners for screws: https://britishfasteners.com

[sprangerny]

Thanks for getting back to me. British Fasteners is 'out of stock' on that kit, for pre-unit Triumphs. So will have to scrounge around. Tried British Cycle Supplies and Baxter Cycle but they don't appear to have a Fillisterhead kit either. Will keep hunting. Thanks.

[AFJ]

Try walridge.com

[sprangerny]

Many thanks for the lead. Will try them. Doug