Author Topic: Shear Bolts  (Read 3380 times)

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Offline the_matrix_master

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Shear Bolts
« on: September 20, 2022, 10:42:57 AM »
Looking to drill out and replace the loose shear bolts that are holding together the ignition lock
Shear bolts are readily available but does anyone know what the replacement size should be?
I vaguely remember something like 5 or 6mm x 15 or 20 mm?
Any ideas?
Cheers

Offline Nigel

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Re: Shear Bolts
« Reply #1 on: September 20, 2022, 05:08:01 PM »
Hi MM,
They are 8mmx23mm thread, contact shoulder to end.
Slightly longer [25/26mm] would also be fine.

Actually, if they are already loose, drilling shouldn't be needed.
A light tap with a centre-punch will probably move them. Once
one is loose, the other comes loose.

For renewal, consider Allen headed cap bolts.

Hope this helps
Nigel
1984 2.0 Carb HPE [ex Aus] Grigio Finanza.
2007 Mazda 6 2.3 [current daily, highly recommended]
The past:
1980 2.0 HPE White in South Africa [hope it survives!]
1976 1.6 Coupe Lancia Blu [PFG 76R] [probably deceased]
oh,and an Uno Turbo 1997 also in SA [stolen,never recovered]

Offline the_matrix_master

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Re: Shear Bolts
« Reply #2 on: September 20, 2022, 07:25:12 PM »
Thanks Nigel