Metric bolt between 5/16 3/8?

[tomstractorsandtoys]

Is there a metric bolt that is in-between 5/16 and 3/8? I am working on a combine cylinder that was originally riveted together and we had to grind the rivets to disassemble it. I guess a 5/16 rivet would have expanded during assembly. Drilling out and using 3/8 bolts would make it tight to install the cylinder bars. Thanks Tom

 

[Janicholson]

8mm equals .315 inches
5/16= .3125 inches
10mm= .3937 inches
38=.375 inch
Jim

 

[tirekicker]

The short answer is no. Typical metric bolt sizes are 6, 8, 10, 12mm, and so on. The metric size that would be in between 5/16 and 3/8 would be 9mm.

 

[john in la]

M8 is the only thing between 5/16 and 3/8

5/16 is 7.93 mm
M8 bolt is 8 mm
3/8 is 9.52 mm

 

[hurleyjd]

There are some fasteners that are used in the aircraft industry designed for close tolerance holes. They can be had in 5/16 diameter and also oversize 1/64 and 1/32 increments. You might call this company and inquire. I did repair the clutch plate on the SOS with these. Rivet holes had been elongated and I selected the size needed and a friend found some where he worked and sent them to me. Have been holding for 5 years and some.
hi loc

 

[fastfarmall]

Tom, i am just curious is the that on a 95, or a 105 combine?? I remember some thing about bushings, on bars, years ago?

 

[hurleyjd]

The company referred to in this post also sell oversize bolts.

 

[tomstractorsandtoys]

Yes there are bushings on the bars for both 95 and 105's. I am working on the metal bar that the bars themselves bolt to. Hope to post some pics of the project soon as we figure out how to get them from the camera to computer. There were some computer updates and now we can not import pics. Tom

 

[Jeff NWOH]

Is it possible to put a 5/16 helicoil in the holes to get you back to a 5/16 bolt?

 

[ss55]

How difficult would it be to take the parts to a fabrication shop and have new rivets installed? I suspect this is a critical fastener in a buried hard to reach place, buried under another part. Rivets may have been used because if a bolt came loose it could destroy the combine?

 

[timcasbolt]

(quoted from post at 13:57:15 03/02/22) Is there a metric bolt that is in-between 5/16 and 3/8? I am working on a combine cylinder that was originally riveted together and we had to grind the rivets to disassemble it. I guess a 5/16 rivet would have expanded during assembly. Drilling out and using 3/8 bolts would make it tight to install the cylinder bars. Thanks Tom

M9x1.0 exists, but you'll have a tough time finding any. Maybe a specialty fastener company. I have a tap, but no die.

 

[fastfarmall]

Ah. yea now i remember, i think i got some of those bushing yet, but i am not home, wont be for three more weeks!

 

[Leroy]

I would assume a 95 or 105 would be simular to a 45 machine. And that had a backer bar rivited to the cylinder where the cylinder bars bolted on. We had to change those backer bars due to a rock getting in and bending them. Had to grind the rivits of to get them out to change. Then we took those bars from a parts combine and just bolted them on to the disks that make yp the cylinder. Just standard bolts think used a fine thread other wise nothing special. And I don't remember using anything except the bolts rgar were in the cylinder bars ans think the other bolts were just the cylinder bars from the parts machine. Worst part was getting the old rivits out as we did not have an angle grinder yet, just had to use an electric drill with a grinding wheel chucked in. We did have the platform off tho and changed for wheat-beans to a corn head. If they are correct length just use the mplts that hold the cylinder bars on from a parts machine as the bars CANNOT be straightwned. This was quite a few years ago.

 

[fastfarmall]

Yeah, it has a partial drum the rasp bar is bolted to, and the center of the drum is keyed to the shaft,!

 

[4xMF]

That would be 9 mm. Not sure if I have ever seen one but the thread chart in my "engineers bible" shows a 9x0.75 and a 9x1. mm.

 

[ss55]

Would socket head flat screws or pan head screws be alternatives?

 

[Hobo,NC]

(quoted from post at 04:07:50 03/03/22) That would be 9 mm. Not sure if I have ever seen one but the thread chart in my "engineers bible" shows a 9x0.75 and a 9x1. mm.

I have ran across disc brake caliper pins that used 9 x 1.25 I have used this kit several times I don't remember the application. 11X1.25 is used on GM disc brakes.

 

[Fred Werring]

Hobo, got a similar 9mm kit, used it on my 2001 Ford Focus.

Still on the shelf, as the family is still driving a few pre-2012 Focuses (Foci?), may need it.

Good little cars.

Fred

 

[Russ from MN]

My metric tap and die set has a 9mm, but I've never seen a bolt!

 

[Sprint 6]

Chrysler cars used to use that size, too.

 

[Hobo,NC]

(quoted from post at 11:01:53 03/03/22) Hobo, got a similar 9mm kit, used it on my 2001 Ford Focus.

Still on the shelf, as the family is still driving a few pre-2012 Focuses (Foci?), may need it.

Good little cars.

Fred

Its 5:00 customer waiting cars got to go then gravy job turns to poop parts store closing Heli kit will have to be ordered. Grandkids ball game at 6 suppers getting cold. You have to buy a kit you may never need again somehow pass on the cost if you were not the bad guy you are now.

The customer don't understand it was OK when they brought it to ya. The more I think about it those bolts are pass thru the treads hang out the open side of the hole they get all the road debris when removed they wipe out the treads.

The good 1 in 10 will think you hung the moon with one hand thighed behind your back. : )

And to think we repeat this everyday for the small victory's.