Usafexplorer
New member
Anyone have a resource on bolt sizes for these tractors? My biggest gripe is loose or missing hardware on our XG3140, otherwise it's been a great tractor.
LS bolt sizes
- Thread starter Usafexplorer
- Start date
- Views: 234
OP
Usafexplorer
New member
Thanks for the info, much appreciated
jaydee325
Veteran Member
- Joined
- May 21, 2013
- Messages
- 1,209
- Location
- Casco, Mi
- Tractor
- John Deere X584 Garden Tractor & LS R3039H
The fasteners on LS tractors are metric. The table provided above is a generic torque table for metric fasteners provided in the owners manual.
If you need to determine the size of a missing bolt, you can go to the LS tractor website parts list and look up the fastener. The description tells you what size fastener you need. For example, for a step bolt on an XG3140, the specification shows; M8XP1.25X40L. That means the bolt is 8mm diameter, 1.25 thread pitch, 40 mm in length.
As far as grade of bolt, SAE grade 5 = 8.8 metric and SAE grade 8 is 10.9 metric. Metric 12.9 has no SAE grade AFAIK. If you don't know the grade of the missing fastener, find a mate on the tractor and proceed accordingly.
If you need to determine the size of a missing bolt, you can go to the LS tractor website parts list and look up the fastener. The description tells you what size fastener you need. For example, for a step bolt on an XG3140, the specification shows; M8XP1.25X40L. That means the bolt is 8mm diameter, 1.25 thread pitch, 40 mm in length.
As far as grade of bolt, SAE grade 5 = 8.8 metric and SAE grade 8 is 10.9 metric. Metric 12.9 has no SAE grade AFAIK. If you don't know the grade of the missing fastener, find a mate on the tractor and proceed accordingly.
GS650GL
Silver Member
- Joined
- Jan 16, 2024
- Messages
- 195
- Tractor
- LS G3038 LS XG3025, 1945 Farmall H, Farmall M, Mitsubishi MT2501D, Allis Chalmers B
Besides looking up the bolts in the parts list to find the size of missing bolts, you could also remove one of the bolts that's not missing and use a plastic bolt measuring device to determine diameter, length, and thread pitch. These measuring tools are sold just about everywhere and are only a few dollars. I have one that is SAE on one side and metric on the other and measures bolts and also nuts. I keep it in my tool box and use it often if I'm not sure what size bolt I need. Some also show thread pitch but the one in the picture does not. I have a separate thread pitch gauge which is also available in hardware or auto parts stores.
Attachments
Last edited:
