The 75 and ZT Owners Club Forums - View Single Post

rrobson · 29th March 2021, 20:38

A good quality stainless fastener will have at least 80% of the tensile strength an 8.8 grade fastener will have. Higher grades exceed the tensile strength of an 8.8 grade fastener which is likely what’s fitted currently. So provided you get at least a 50 grade you won’t see a big drop in the capacity. If you are concerned, fit two.

You could swap and have no issues, however what you may encounter is gauling of the nut and spindle next time you want to remove it. Stainless loves to pick up...

29th March 2021, 20:38	#11
rrobson I really should get out more....... 75 tourer cdti, MG ZS 180, nissan terrano & 1.8t rover 25 Join Date: Feb 2010 Location: Pontefract Posts: 2,644 Thanks: 17 Thanked 295 Times in 218 Posts	A good quality stainless fastener will have at least 80% of the tensile strength an 8.8 grade fastener will have. Higher grades exceed the tensile strength of an 8.8 grade fastener which is likely what’s fitted currently. So provided you get at least a 50 grade you won’t see a big drop in the capacity. If you are concerned, fit two. You could swap and have no issues, however what you may encounter is gauling of the nut and spindle next time you want to remove it. Stainless loves to pick up... __________________ How to view a car - everything you need to help you inspect a used car VIS motor tester avalible to local members Injector removal tool and auto gearbox pressure tester now available