Welcome to the North American Subaru Impreza Owners Club Friday September 22, 2017
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Go Back   NASIOC > NASIOC Technical > Service & Maintenance

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads. 
Thread Tools Display Modes
Old 01-18-2005, 10:00 AM   #1
Scooby Guru
Member#: 37359
Join Date: May 2003
2003 WRX

Default Re-using self-locking nuts, etc

I always re-use hardware like nuts and bolts unless it is obviously damaged, despite the manual often saying to discard them and use new ones. I've not had any problems, but I'm not sure if I'm taking a big risk by ignoring this advice. Does anyone have any data either way?
* Registered users of the site do not see these ads.
leecea is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 01-18-2005, 10:29 AM   #2
Scooby Specialist
Member#: 40307
Join Date: Jul 2003
Chapter/Region: South East
Location: Spaceport, U.S.A.
2004 WRX Sport Wagon


Speaking with experience working on space flight hardware, most self locking nuts are good as long as they still fall within certain specifications for running torque. I would imagine with automobile hardware they say toss it and get a new one because it's not that expensive, and it's easier and safer than making sure the nut is still good. As long as your not repeatedly applying torque to it and then taking it back off you should be okay. If you can easily twist the nut on all the way down until the nut is flush to the surface of the piece you are tightening then it's time to get a new nut.

Cliff Notes: No big risk. Just don't do it too often.
spacenut999 is offline   Reply With Quote
Old 01-18-2005, 11:00 AM   #3
Scooby Guru
Member#: 37359
Join Date: May 2003
2003 WRX


Thanks for the info. I wonder of we are talking about different types of self-locking nuts. It sounds like you may be refering to the type with a nylon insert. Most of the bolts I've come across on my car have a kinda serated bottom surface that seems designed to grab onto the surface they are tightened against. I'm thinking of things like the nuts on the strut bolts that go through the hub.

Also, something that I thought was particularly strange, some of the front subframe bolts can be re-used but others are supposed to be discarded.
leecea is offline   Reply With Quote
Old 01-18-2005, 12:43 PM   #4
Scooby Specialist
Member#: 17252
Join Date: Apr 2002
Chapter/Region: Tri-State
Location: NJ
'06 WX8


On the bolts holding suspension arms and sway bars links, and probably some others, the locking nuts have a collar with indentations stamped in. The manual says those should be replaced, maybe because the indentations wear down. When replacing an axle boot, I did re-use those nuts, with blue Loctite on the threads.
avk is offline   Reply With Quote

Thread Tools
Display Modes

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 Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: Factory Self Locking Nuts mrcoder Suspension/Brakes/Handling 7 09-27-2007 05:20 PM
FS: NJ - Subaru OEM Self Locking Nuts - New mrcoder Suspension/Brakes/Handling 1 09-27-2007 11:29 AM
Re-using strut self locking nuts runner19 Brakes, Steering & Suspension 4 11-23-2004 10:26 AM
self-locking nut part number? ldc6 Brakes, Steering & Suspension 3 04-19-2004 10:56 AM
Self-Locking Nut on Strut Top Steppin Razor Brakes, Steering & Suspension 5 11-11-2002 09:22 PM

All times are GMT -4. The time now is 10:03 AM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2017 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.