MkIII Square Tail light lense screws

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p400

p400

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I need a tail light lense screw for a 1975 MKIII square lens.
What is the size thread please? BSF?

MkIII Square Tail light lense screws
 
I believe they are an 11/16 self tapping screw - so not a bolt thread as such
 
Old Britts shows it as a 10-32 but does not show length. Part number 99-7013
Pete
 
99-9947
https://andover-norton.co.uk/en/shop-details/18007/screw-rectangular-tail-light-lens


#6 x 32 UNC.
https://www.classicbritishspares.co...-light-lens-mounting-screws-2-99-9947-1973-82

"New Triumph & Norton Lucas LU917 Tail Light Lens Mounting Screw Set. 2 screws are included. Each screw comes with a zinc plated finish, measures 11/16" under the head with a thread pitch of 32 (UNC). Fits Triumph & Norton models (Commando, T140, Bonneville, T160, Trident, Etc) from 1973-1982. Please refer to your parts catalog for proper fitment.


*****Please note that this Screw set will only work with LU917 Tail Lights as used from 1973-1982!*****"
 
picked up a 6-32x 3/4 round head slotted screw at a local mini hardware store, perfect match for existing screw, fastened easily.
 
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