2deuce
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Looking to buy a set of pins for a med tow bar. I need all 3. Thanks, Greg
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Also, many people say they like to use grade 8 bolts; (For those that do not know, 3dAngus buys, refurbishes and sells quite a lot of military tow bars so it is very likely he has seen far more of them than most people. Therefore I personally would give his opinion on this matter considerable weight.)For safety's sake, please always use the correct pins. We are one of two OEM manufacturers of the 3/4" & 1.00" Medium Towbar Pin assemblies. These pins undergo a lengthy manufacturing process with military grade processing and inspection. This includes:
*Machining the pins from cold drawn steel, grades 1040 - 1050 IAW ASTM A108,
*Heat treating to C 18 - 27,
*Heavy Phosphate Coating & Dry Film Lube..
*Then there is the manufacture of the locking pin and retainer lanyard using military grade aircraft stainless steel braided wire, stainless steel crimped sleeves and an OD coated locking pin.
With that said, I'm not trying to sell pins here, but just giving some insight as to how critical these pins are to safely towing your vehicle.![]()
Also from the same thread and also by 3dAngus he just quoted the above post by NEWVENTURESENTERPRISESINC;Just be sure you buy original mil-spec pins that come with the towbars, or from a GL auctions.
There are plenty of people out there with them. I would never use a grade 8 bolt, or anything else other than the original mil spec pins specifically tested at the highest standards for these things. You just got to do regular maintenence on pins and towbars, just like you do on your trucks, though it is not something we usually think about. Why? Cause they never go bad.
Keep in mind that a Grade 8 bolt is far superior in strength than a tractor pin. So.. If your using Grade 8 bolts or especially tractor pins, you may want to upgrade before your next tow bar evolution.I could not agree with you more on the pins. I just pulled a towbar apart yesterday that had a grade 8 bolt holding the legs together. It was the standard 3/4" size, but grade 8 did not hold up. It had "rings" from wear embedded all the way around the bolt where the bolt would "turn" inside the towbar legs, and it would wear them down. This is the first time I have seen a grade 8 bolt used on a towbar, but I have heard of it before, while I have always encouraged mil-spec pins. Now I know my assumption is correct where mil-spec pins are safer, and better than grade 8 bolts. I will try to put up a picture of the wear later. Thanks for your comments newventures.
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