• Welcome to the website of the Vincent H.R.D. Owners Club.

    Should you have any questions relating to the Vincent H.R.D. Owners Club, or Vincent H.R.D. motorcycles in general, please contact Graham Smith, Hon. Editor and Webmaster by calling 07977 001 025 or please CLICK HERE.

    You are unrecognised, and therefore, only have VERY restricted access to the many features of this website.

    If you have previously registered to use this forum, you should log in now. CLICK HERE.

    If you have never registered to use this website before, please CLICK HERE.

F: Frame Seat bolts 327


New Website User
VOC Member
Hi All
One of my seat bolts is damaged and I want to fit new bolts. The bolts fitted have a double length hex head 1 1/4 x 1/4 BSF with slight dome. The parts list M037 and the VOC Spares list show a standard head bolt.
Which is correct for 1951 Series C Comet. I will get a couple machined up if need be.
Bruce Andersen


The VOC Spares Company Limited

Well Known and Active Website User
VOC Member
The ones we supply are correct, I would say that! But all the bolts and screws listed with a numerical part number only are 'standard' industry spec items. Any part Vincent made specially has a part number starting with a letter e.g. the other bolt next to 327, FT129 is a 5/16 shank with a 1/4 size head and a non standard thread to parallel shank ratio.