# Screwing grabrail to seat base
**URL:** https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478
**Category:** Big Block Tonti and Loop Frame models
**Created:** [31 January 2017 17:00 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478 "2017-01-31T17:00:36Z")
**Posts on this page:** 16
**Page:** 1
### Author:  [@Duffo](https://forum.motoguzziclub.co.uk/u/Duffo)
#### Post date: [31 January 2017 17:00 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/1 "2017-01-31T17:00:36Z")
The Convert winter rebuild is going along nicely but a little problem has raised its head, the original metal seat base is in reasonable condition, slight rust but painted with Hammerite, the problem is the grab rail is mounted with 4 big self tappers, 6.3mm/8mm x 19mm. Have taken out the rusty originals and replaced with stainless ones, but the 2 rear ones now just spin in the holes and do not grab. Anyone had this problem and solved it? No bigger screws seem to be available.
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### Author:  [@ranton\_rambler](https://forum.motoguzziclub.co.uk/u/ranton_rambler)
#### Post date: [31 January 2017 17:30 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/2 "2017-01-31T17:30:05Z")
We use jack-nuts for putting threads in thin sheet metal at work. There is a proper tool to close them up but can be done with a nut and bolt.
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### Author:  [@guzzibrat](https://forum.motoguzziclub.co.uk/u/guzzibrat)
#### Post date: [31 January 2017 17:36 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/3 "2017-01-31T17:36:51Z")
May be something here [http://www.theinsertcompany.com/index.php](http://www.theinsertcompany.com/index.php)
Good luck
Steve
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### Author:  [@Don-Spada](https://forum.motoguzziclub.co.uk/u/Don-Spada)
#### Post date: [31 January 2017 18:26 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/4 "2017-01-31T18:26:23Z")
Have you taken the foam off the steel base?
If you have, could you tack weld some nuts on the inside of the base to screw some 6mm bolts into?
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### Author:  [@chilly](https://forum.motoguzziclub.co.uk/u/chilly)
#### Post date: [31 January 2017 19:37 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/5 "2017-01-31T19:37:21Z")
Tack welded a plate to the base, then welded the bracket to that, worked a treat 🕶
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### Author:  [@Exmembers](https://forum.motoguzziclub.co.uk/u/Exmembers)
#### Post date: [31 January 2017 20:08 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/6 "2017-01-31T20:08:21Z")
i use rivet nuts drill hole put them in and tighten up the tube distorts like pop rivet job don then fit with 6mm bolts
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### Author:  [@chilly](https://forum.motoguzziclub.co.uk/u/chilly)
#### Post date: [31 January 2017 22:17 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/7 "2017-01-31T22:17:44Z")
Thats posh Ray 😉
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### Author:  [@ranton\_rambler](https://forum.motoguzziclub.co.uk/u/ranton_rambler)
#### Post date: [31 January 2017 22:32 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/8 "2017-01-31T22:32:41Z")
Jacknut is the same, just a different name.
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### Author:  [@Duffo](https://forum.motoguzziclub.co.uk/u/Duffo)
#### Post date: [1 February 2017 14:01 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/9 "2017-02-01T14:01:02Z")
Foam and cover still on seat, I want to keep the patina, like the sound of jacknuts, off to look on E-Bay…
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### Author:  [@Exmembers](https://forum.motoguzziclub.co.uk/u/Exmembers)
#### Post date: [1 February 2017 21:43 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/10 "2017-02-01T21:43:38Z")
can send you my kit if you want just return afterwards
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### Author:  [@Duffo](https://forum.motoguzziclub.co.uk/u/Duffo)
#### Post date: [2 February 2017 11:40 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/11 "2017-02-02T11:40:20Z")
Thanks, Ray, have ordered a pack already.
Cheers, Gerry.
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### Author:  [@Exmembers](https://forum.motoguzziclub.co.uk/u/Exmembers)
#### Post date: [2 February 2017 11:58 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/12 "2017-02-02T11:58:35Z")
if just got inserts best bet place in hole (Needs to be tight) screw in a bolt with loose nut on it then use the loose nut to tighten up and deform the nut till tight in the hole that way it stops the insert turning as it would with just a bolt
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### Author:  [@Mike\_H](https://forum.motoguzziclub.co.uk/u/Mike_H)
#### Post date: [2 February 2017 13:14 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/13 "2017-02-02T13:14:39Z")
Clever!
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### Author:  [@Duffo](https://forum.motoguzziclub.co.uk/u/Duffo)
#### Post date: [6 February 2017 15:25 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/14 "2017-02-06T15:25:09Z")
> [@exsmokingbiker](#):
>
> if just got inserts best bet place in hole (Needs to be tight) screw in a bolt with loose nut on it then use the loose nut to tighten up and deform the nut till tight in the hole that way it stops the insert turning as it would with just a bolt
Exactly how I did it, Ray, grab rail now solid enough to haul bike onto stand, (which I have a habit of doing as rear crash bars are a bit low).
Cheers, Gerry.
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### Author:  [@Exmembers](https://forum.motoguzziclub.co.uk/u/Exmembers)
#### Post date: [6 February 2017 18:44 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/15 "2017-02-06T18:44:31Z")
brilliant news
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### Author:  [@Cabernet](https://forum.motoguzziclub.co.uk/u/Cabernet)
#### Post date: [7 February 2017 04:33 UTC](https://forum.motoguzziclub.co.uk/t/screwing-grabrail-to-seat-base/2478/16 "2017-02-07T04:33:27Z")
Thanks for the wrinkle folks!