L777JDP Posted October 26, 2018 Share Posted October 26, 2018 Hello,I've had the seat belts replaced by harnesses, and I want to blank off the hole where the shoulder loops bolt to the chassis. Does anybody know the bolt diameter?Thanks! Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted October 26, 2018 Member Share Posted October 26, 2018 How old is the chassis?7/16" UNF?Jonathan Link to comment Share on other sites More sharing options...
L777JDP Posted October 26, 2018 Author Share Posted October 26, 2018 Its 2013, so I expect that it is metric. I will try M10. I'm planning to put a black nylon screw in it so it is just a case of figuring out what the size is. I'll see if I can find an M10 bolt to try first just to confirm. Link to comment Share on other sites More sharing options...
John Vine Posted October 26, 2018 Share Posted October 26, 2018 Interesting question. The many Assembly Guides don't help as inertia belts are factory-fitted prior to delivery.It would be odd if the mount was different from the harness mounts, so I'd start with 7/16" UNF as JK suggests.JV Link to comment Share on other sites More sharing options...
Drumster Posted October 26, 2018 Share Posted October 26, 2018 Pretty sure all seatbelts and harness mounts are 7/16ths irrespective of imperial or metric chassis. Happy to be proven wrong though.... Link to comment Share on other sites More sharing options...
SM25T Posted October 27, 2018 Share Posted October 27, 2018 Maybe a push in plastic plug ... one with a spiky core behind that fits all ? Local car spares shop will sell them. Link to comment Share on other sites More sharing options...
Area Representative Paul Richards Posted October 27, 2018 Area Representative Share Posted October 27, 2018 Imperial or metric chassis doesn't matter. All seat belt mounts are 7/16 UNF. Applies to all makes of car. Link to comment Share on other sites More sharing options...
L777JDP Posted November 2, 2018 Author Share Posted November 2, 2018 Yep, 7/16 UNF is what they are.I got a couple of "7/16x20 UNF AN-4 ORB BLACK Hex Allen Key BLANKING PLUG BUNG Male Fuel Adapter" off eBay.Didn't have an Allen key that fits, presumably mine are all metric. However one of my Torx bits fitted perfectly. Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted November 2, 2018 Leadership Team Share Posted November 2, 2018 Brilliant find, I'll get a few to fill the holes left after removing a full cage.Stu. Link to comment Share on other sites More sharing options...
L777JDP Posted November 4, 2018 Author Share Posted November 4, 2018 Took a bit of finding. Being aluminium and anodised black they won’t corrode or damage the threads. The ones I got come with an o-ring so unlikely to vibrate loose. Link to comment Share on other sites More sharing options...
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