# Replacement bolts? **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** mazda6, mazda\ **Created:** [June 2, 2018, 7:38pm UTC](https://community.cartalk.com/t/replacement-bolts/118552 "2018-06-02T19:38:36Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Triathlor](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/triathlor/32/13286_2.png) [@Triathlor](https://community.cartalk.com/u/Triathlor)\ **Post date:** [June 2, 2018, 7:38pm UTC](https://community.cartalk.com/t/replacement-bolts/118552/1 "2018-06-02T19:38:37Z")
2007 Mazda 6 V6 3.0l Hi there, I rounded off a bolt when trying to replace the AT Mount on this vehicle. I bought some vise grips, and bolt out kits for my second attempt. I was wondering if I could use any replacement bolt from Oreilly’s or hardware store or do they have to be specific to the vehicle (OEM)? I don’t know if there is a standard, but I am concerned about torque values here. I am afraid to apply the same torque values on the new bolts and later find out they were too tight or whatever. Please help. Thanks ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [June 2, 2018, 8:29pm UTC](https://community.cartalk.com/t/replacement-bolts/118552/2 "2018-06-02T20:29:23Z")
I’ve replaced many auto bolts/nuts with ones from ACE hardware. Take the old bolt with you so that they can match the grade,length, and thread size. Tester ---
**Author:** ![Triathlor](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/triathlor/32/13286_2.png) [@Triathlor](https://community.cartalk.com/u/Triathlor)\ **Post date:** [June 2, 2018, 9:54pm UTC](https://community.cartalk.com/t/replacement-bolts/118552/3 "2018-06-02T21:54:26Z")
Thanks Tester, will do! ---
**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\ **Post date:** [June 3, 2018, 4:56am UTC](https://community.cartalk.com/t/replacement-bolts/118552/4 "2018-06-03T04:56:31Z")
> [@Triathlor](#): > > I was wondering if I could use any replacement bolt from Oreilly’s or hardware store or do they have to be specific to the vehicle (OEM)? You can, but if you do I’d recommend getting a “grade 8” bolt (or the metric equivalent). Here’s a chart that’ll make the reason obvious. You’re better to have a too-strong bolt than a too-weak bolt. Yes, they’re available at any big-box hardware store dirt-cheap. [https://www.boltdepot.com/fastener-information/Materials-and-Grades/Bolt-Grade-Chart.aspx](https://www.boltdepot.com/fastener-information/Materials-and-Grades/Bolt-Grade-Chart.aspx) ---
**Author:** ![Triathlor](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/triathlor/32/13286_2.png) [@Triathlor](https://community.cartalk.com/u/Triathlor)\ **Post date:** [June 4, 2018, 9:50am UTC](https://community.cartalk.com/t/replacement-bolts/118552/5 "2018-06-04T09:50:22Z")
Thanks a lot for the tip and the link! ---
**Author:** ![Rod-Knox](https://avatars.discourse-cdn.com/v4/letter/r/a183cd/32.png) [@Rod-Knox](https://community.cartalk.com/u/Rod-Knox)\ **Post date:** [June 4, 2018, 5:33pm UTC](https://community.cartalk.com/t/replacement-bolts/118552/6 "2018-06-04T17:33:01Z")
On this subject, isn’t the metric equivalent of grade 8 marked 10.7? ---
**Author:** ![keith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/keith/32/5518_2.png) [@keith](https://community.cartalk.com/u/keith)\ **Post date:** [June 4, 2018, 7:13pm UTC](https://community.cartalk.com/t/replacement-bolts/118552/7 "2018-06-04T19:13:57Z")
Doesn’t your new mount come with studs or bolts? ---
**Author:** ![anon86613489](https://avatars.discourse-cdn.com/v4/letter/a/ad7895/32.png) [@anon86613489](https://community.cartalk.com/u/anon86613489)\ **Post date:** [June 4, 2018, 7:47pm UTC](https://community.cartalk.com/t/replacement-bolts/118552/8 "2018-06-04T19:47:26Z")
Read here: [http://elginfasteners.com/resources/metric-bolt-conversion-metric-to-standard-bolt-conversion/](http://elginfasteners.com/resources/metric-bolt-conversion-metric-to-standard-bolt-conversion/) In metric we have: 4,6 supersoft, pretty much like butter on a hot windowsill 5,8 standard 8,8 strong, but can be stretched. 10,9 superstrong 12,9 break me if you can 😜 Only steel bolts are rated this way. Stainless is rated differently and has a much lower max. torque limit. ---
**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\ **Post date:** [June 4, 2018, 9:37pm UTC](https://community.cartalk.com/t/replacement-bolts/118552/9 "2018-06-04T21:37:39Z")
> [@Rod\_Knox](#): > > On this subject, isn’t the metric equivalent of grade 8 marked 10.7? That’s why I said “or metric equivalent” and posted a chart that shows the metric ratings. ---
**Author:** ![Triathlor](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/triathlor/32/13286_2.png) [@Triathlor](https://community.cartalk.com/u/Triathlor)\ **Post date:** [June 5, 2018, 2:30am UTC](https://community.cartalk.com/t/replacement-bolts/118552/10 "2018-06-05T02:30:08Z")
Nope… I ordered all 3 mounts from the Mazda dealer and none of them came with bolts. ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [June 5, 2018, 2:49am UTC](https://community.cartalk.com/t/replacement-bolts/118552/11 "2018-06-05T02:49:02Z")
I was just over to Home Depot today looking for a fastener. They have a pretty good assortment of grade 8 bolts as well as the metric version of grade 8. Suggest to OP to look at bolt head. There are often marks or numbers on them that provide a clue what grade it is. If you know the torque spec, you can usually figure out the required bolt grade too. ---
**Author:** ![thegreendrag0n](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/thegreendrag0n/32/9265_2.png) [@thegreendrag0n](https://community.cartalk.com/u/thegreendrag0n)\ **Post date:** [June 5, 2018, 2:53am UTC](https://community.cartalk.com/t/replacement-bolts/118552/12 "2018-06-05T02:53:46Z")
I found my local Lowes to carry a better assortment of fasteners suitable for cars. Another non-chain hardware store in 15 miles literally has it all, but getting to Lowes 2 miles down the road gets 90% of what I usually need. ---
**Author:** ![keith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/keith/32/5518_2.png) [@keith](https://community.cartalk.com/u/keith)\ **Post date:** [June 7, 2018, 1:05am UTC](https://community.cartalk.com/t/replacement-bolts/118552/13 "2018-06-07T01:05:54Z")
I find the parts store rarely carry anything but grade 5, same with Tractor Supply. HD and Lowe’s do but I usually go to Fastenal or Industrial Bolt Supply. If they don’t have what you want, you didn’t need it. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [June 7, 2018, 1:21am UTC](https://community.cartalk.com/t/replacement-bolts/118552/14 "2018-06-07T01:21:27Z")
The problem I find with Fastenal is, you can’t buy just one piece of hardware. Instead, you must purchase a package of that hardware which may be a half dozen. When you only need one. Tester ---
**Author:** ![Rod-Knox](https://avatars.discourse-cdn.com/v4/letter/r/a183cd/32.png) [@Rod-Knox](https://community.cartalk.com/u/Rod-Knox)\ **Post date:** [June 7, 2018, 2:47am UTC](https://community.cartalk.com/t/replacement-bolts/118552/15 "2018-06-07T02:47:35Z")
> [@Tester](#): > > The problem I find with Fastenal is, you can’t buy just one piece of hardware. > > Instead, you must purchase a package of that hardware which may be a half dozen. > > When you only need one. > > Tester I wonder if anyone who sells fasteners by the piece can do so profitably. TSC sells grade 5 and grade 8 by the pound but because it’s loose in bins a lot of it leaves the store in peoples pockets. And years ago I realized how much time was being wasted over broken and missing bolts so I bought a hardware store bolt bin and stocked it with a dozen of every common size SAE and Metric bolt,nut, screw and washer and lengths of threaded rod also. And I never charged for them. The time saved not chasing replacements down or cleaning the old ones to reuse them was more costly than the new bolts. ---
**Author:** ![keith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/keith/32/5518_2.png) [@keith](https://community.cartalk.com/u/keith)\ **Post date:** [June 7, 2018, 3:08am UTC](https://community.cartalk.com/t/replacement-bolts/118552/16 "2018-06-07T03:08:12Z")
> [@Tester](#): > > The problem I find with Fastenal is, you can’t buy just one piece of hardware. > > Instead, you must purchase a package of that hardware which may be a half dozen. > > When you only need one. > > Tester Yeah there is that. I needed two bolts, nuts and washers to install a new exhaust on my truck. Ended up with 3 bolts, 5 nuts and 10 washers. Edit: but they had them when no one else in town did. ---
**Author:** ![insightful](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/insightful/32/2732_2.png) [@insightful](https://community.cartalk.com/u/insightful)\ **Post date:** [June 7, 2018, 7:03pm UTC](https://community.cartalk.com/t/replacement-bolts/118552/17 "2018-06-07T19:03:07Z")
Buy single pieces here: [https://www.boltdepot.com/Default.aspx](https://www.boltdepot.com/Default.aspx) ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [June 7, 2018, 7:14pm UTC](https://community.cartalk.com/t/replacement-bolts/118552/18 "2018-06-07T19:14:24Z")
That does no good if you need the piece of hardware NOW! Tester ---
**Author:** ![insightful](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/insightful/32/2732_2.png) [@insightful](https://community.cartalk.com/u/insightful)\ **Post date:** [June 7, 2018, 7:23pm UTC](https://community.cartalk.com/t/replacement-bolts/118552/19 "2018-06-07T19:23:01Z")
> [@Tester](#): > > That does no good if you need the piece of hardware NOW! Thank you, Captain Obvious… ;-] ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [June 7, 2018, 7:25pm UTC](https://community.cartalk.com/t/replacement-bolts/118552/20 "2018-06-07T19:25:36Z")
I think you should change your handle. Because you’re not. Tester [Next page](https://community.cartalk.com/t/replacement-bolts/118552.md?page=2)