Jakelc15

6061 t6 is weaker than the stock pin. If you try it let me know how it does. For $3 it may be worth a shot.

smoothnu

What size is the 5 tons shear pin?

cranetruck

Does this help?


5315-00-209-7979 Characteristics Data

MRC Criteria Characteristic MATT MATERIAL ALUMINUM ALLOY 2017 OVERALL MDCL MATERIAL DOCUMENT AND CLASSIFICATION QQ-A-225/5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL SFTT SURFACE TREATMENT ANODIZE OVERALL STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL AAGZ FIRST END STYLE 1 CHAMFERED AMCS FIRST END TAPER LENGTH 0.016 INCHES MINIMUM AND 0.047 INCHES MAXIMUM CRMG FIRST END TAPER ANGLE 43.0 DEGREES MINIMUM AND 47.0 DEGREES MAXIMUM CQBB SECOND END RELATIONSHIP WITH FIRST END IDENTICAL ABRB HOLE ARRANGEMENT STYLE 2 BOTH ENDS DRILLED ABRC FIRST HOLE DIAMETER 0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM ABRD SECOND HOLE DIAMETER 0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM ABRE DISTANCE FROM CENTERLINE OF HOLE TO END OF PIN 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM ABRF CENTER TO CENTER DISTANCE BETWEEN HOLES 2.359 INCHES MINIMUM AND 2.391 INCHES MAXIMUM CSYM SURFACE FINISH 63.0 MICROINCHES OUTSIDE DIAMETER ACHT PIN OVERALL LENGTH 2.609 INCHES MINIMUM AND 2.641 INCHES MAXIMUM ACHU PIN OVERALL DIAMETER 0.3650 INCHES MINIMUM AND 0.3700 INCHES MAXIMUM

Edit: Copied and pasted Google hit for "5315-00-209-7979"

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MEP-018A (needs new generator head)

Avatar: XM757 in OK prepared for 1,000 mile trip home. Part of 6,000 mile journey in 2006.
1968 M49A2C modified with 1960 M756A2 truck bed and 1975 HIAB 765A knuckleboom, exhaust brake, VIC-1 and more.
1969 Ford XM757 8x8, 5-ton Pershing 1A truck tractor...the "improved MV".

"Some things can't be made better, just differently......a lot of things actually"

smoothnu

Mr. Cranetruck, thank you for the info. Do you know the shear strength of this 2017 alloy? I found some 3/8" 2024T4 round stock and was hoping I could use this for my 5 ton and my deuce. (turned down for the deuce of coarse) It is my understanding that the 2024T4 material is used for the deuces winch. If this material is suitable for both it would be a great find. Considering I can get it for a fraction of the price of a prefabbed shear pin. Thanks in advance for any and all info.

Orionspath

We too here in Virginia have the same affections for our winched trucks! Recently, I had installed a 10k on my 88' M35A2C from a '71. My cousins and I learned that we could recover timber that had been blown over utilizing the winch and block from the road. Sheare pins are 5/16" in diameter and roughly 2.5 " in length. After pulling a dozen or so out of the woods to the road, the winch stopped working and we soon realized what had occurred. A trip to Southern States for a PTO Shear pin was our original idea but never got passsed the frequented NAPA store. In farming country, bush hogs and farm equipment are in need of replacement pins often. Try stopping by Tractor Supply or Southern States the next time you see one and see the parts manager. I looked at SaturnSurplus.com and had a bit of trouble trying to find the pins. Turns out that there is no stock number listed (last time I looked).

Sorry no pictures at this point on the "winch over". But man am I jacked to finally have on one on my duece!

m16ty

All the farm equipment shear pins I've ever seen were steel. I would think you could be in trouble using a steel shear pin.

The factory pins are 9/32" in dia. also. I think you may be ok using a 5/16 aluminum pin but not a steel one.

GoHot229

I'v used them in my farm equiptment and I believe they are something less than a grade five bolt, but the ease of getting them makes them attractive. I think if you can pull in a straight dirrection you will be ok, they shouldl shear after an aluminum, but before a grade five.
Winches are so overated, I'v never needed one for real yet, and those who do, were doing (**** ***) stuff most of the time admit it.

yeager1

If you're going to make them, I agree to the using 5/16's, it's cheaper and readily available. Shear strenght is similar and probably well within the safety factor of the original design.

tmbrwolf

NEVER EVER use an ag shear pin, I can say from experiance they will not break before the winch / PTO does. That is a problem I have here with fire departments, they break the pin and then use a bolt or a steel shear pin, then they're calling me because they now broke something, after which I remove the offending broken component (and all the other parts) and they get the truck back winchless.

avengeusa

once i get the specs nailed down for the 2.5 ton shear pins i am gonna run off a bunch of them, 1.40 each, i plan on doing 1000 of them

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