Club Cobra Gas - N Exhaust  

Go Back   Club Cobra > Club Cobra Tech Areas > Tech Tips
SS 18-8 bolts 304 grade? SS 18-8 bolts 304 grade?
Portal Register FAQ Members List Social Groups For Sale Gallery Calendar Search Today's Posts Mark Forums Read

MMG Superformance
Nevada Classics
MMG Superformance
Main Menu
Portal
Forums

Module Jump:
Nevada Classics
Nevada Classics
MMG Superformance
Advertise at CC
Banner Ad Rates
MMG Superformance
MMG Superformance
May 2026
S M T W T F S
          1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31            
  #1 (permalink)  
Old 07-01-2022, 03:23 PM
1985 CCX's Avatar
Senior Club Cobra Member
Visit my Photo Gallery

 
Join Date: Mar 2005
Location: Manchester, NH
Cobra Make, Engine: AK1085 (302 Street), HTM111 (427 Comp), CSX2375R (289 Comp) and COB5999 (427 S/C)
Posts: 19,111
Not Ranked     
Default SS 18-8 bolts 304 grade?
Anyone know the bolt grade for SS 18-8
I think SS304
?????
Reply With Quote
  #2 (permalink)  
Old 07-01-2022, 05:44 PM
CC Member
Visit my Photo Gallery

 
Join Date: Jan 2005
Location: Houston, TX
Cobra Make, Engine: Lone Star, 393 Stroker, TKO 600
Posts: 35
Not Ranked     
Default
Found the attached article which might provide some clarification for the distinctions:

https://www.marshfasteners.com/diffe...vs-304-vs-316/
__________________
Skip J.
Reply With Quote
  #3 (permalink)  
Old 07-01-2022, 07:03 PM
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2003
Location: Gurnee, IL
Cobra Make, Engine: Kirkham #259
Posts: 1,396
Not Ranked     
Default
SS is about a grade 5 equivalent....
__________________
Morris
Reply With Quote
  #4 (permalink)  
Old 07-02-2022, 04:55 AM
joyridin''s Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Feb 2009
Posts: 1,696
Not Ranked     
Default
It varies, but it is between a grade 2 and a grade 5.
Reply With Quote
  #5 (permalink)  
Old 07-02-2022, 07:14 AM
sunman's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Nov 2009
Location: Edmond, Ok
Cobra Make, Engine: Classic Roadsters
Posts: 631
Not Ranked     
Default
The Bumax Ultra stainless fasteners are the worlds strongest.
Ultra refers to the cost.
Equivalent to grade 8 or better developed in Sweden for undersea robots.
I’m using them on the a-arm alignment/antidive brackets.
The brackets are 304 stainless steel.
Electro polished, shine like chrome forever.
__________________
Chaney Shores Studio
Last edited by sunman; 07-02-2022 at 04:55 PM.. Reason: It said “developed for undersea robots in Sweden”
Reply With Quote
  #6 (permalink)  
Old 07-02-2022, 09:59 AM
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2003
Location: Gurnee, IL
Cobra Make, Engine: Kirkham #259
Posts: 1,396
Not Ranked     
Default
I think ARP has some strong SS bolts.....
__________________
Morris
Reply With Quote
  #7 (permalink)  
Old 07-02-2022, 06:59 PM
xb-60's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Aug 2009
Location: Adelaide, SA
Cobra Make, Engine: AP 289FIA 'English' spec.
Posts: 13,152
Not Ranked     
Default
Quote:
Originally Posted by 1985 CCX View Post
Anyone know the bolt grade for SS 18-8
I think SS304
?????
A 304 stainless steel has 18% chromium and 8% nickel content, so unless there is anything more specific to add to your question, 18-8 and 304 can be regarded as the same thing.

Cheers!
Glen
Reply With Quote
  #8 (permalink)  
Old 07-02-2022, 08:54 PM
sunman's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Nov 2009
Location: Edmond, Ok
Cobra Make, Engine: Classic Roadsters
Posts: 631
Not Ranked     
Default
18-8, 304 hardware is closer to a 2, it tarnishes, corrodes and the threads gall. Needs nickel anti seize on every nut.
I electro polish 304 angle to prevent degradation.
__________________
Chaney Shores Studio
Last edited by sunman; 07-02-2022 at 10:00 PM..
Reply With Quote
Reply

« Previous Thread | Next Thread »
Thread Tools
Display Modes
Linear Mode Linear Mode

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


All times are GMT -7. The time now is 09:43 PM.

Contact Us - Club Cobra Home - Archive - Top

Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2026, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: CC Policy
Links monetized by VigLink