Hi Michiel
your knowledge on early bikes is always great & welcome
I have looked again at the parts lists I have here - 1940 models - Blue cover
15-8994/6 - top bolt - short x 1
15-8993/6 - top bolt - long x 1
15-8994/6 - bottom bolt - short x 2
EA80/6 - Nut - 5/16" cycle x 4
/6 on the book lists finish as Rustproof black
Then on my Provisional Parts list - WD motorcycles
WM20 - 14,000 to WM20 18,000
Contract C5610
15-8994/11 - short bolt - x 4 - same bolt used in all - 15-8993 is deleted !
EA80/11 nut - 5/16" cycle x 4
/11 finish has now changed to Khaki green ( No 3 Gas Proof)
This information is found in the "Sundries" section of both list and supplement list
Another parts list I use is the following as it has illustrations which is unusual for wartime lists - at least in my experience
Lamp brackets, securing bolts and nuts are now located in the Fork section
15-8994 x 3 - no finish indicated
15-8992 x 1 - no finish stated - bolt re-introduced
EA80 x 4 - no finish stated -
For Info
Lamp bracket bolt (19/32"-5/16 cycle 26tpi)
Lamp bracket bolt (21/32"-5/16 cycle 26tpi)