PJH

Well-known Member
Found these in a box of bolts my wife's grandfather had saved. No idea what they came off of. He never owned anything with an internal combustion engine - farmed with a team into the sixties, so probably something from a horse drawn implement.
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Those are a bit odd looking. The one that is countersunk that isn't squared off couldn't have done much by the looks of it other than snugged something up, I'm guessing wood. I really don't know to be honest.

Not to hyjack your thread, but I ran into an odd screw just yesterday. I have several Stanley knives. They are everywhere. I needed one yesterday to do a job, but couldn't fine one in the truck so I ran to Menards to pick one up, and did. Made by someone else, green and grey job, but what the heck, its a Stanley knife like every rotary cutter is a bush hog. I get back to the job, grab a screw driver and go to open it up to put a blade in it...allen head screw. Not flat like every stanley knife I ever had, but allen head. I go digging through the drawers in the truck, find the allen wrenches, go to insert one about the right size, doesn't fit. Get a good look out in the sunlite...Torx. Not even allen head. 99.99999999999999999% of very stanley knife ever made had a small flat tipped screw to open it to put a blade in them, and this one aint even an allen head, its a Torx. I have Torx, but they weren't on the truck. Who in the world came up with that idea? How many people carry a set of Torx head bits with them? I ended up using a pocket knife and did the best I could. My point? Like your bolts, a hundred years from now someone is going to find that non-Stanley brand stanley knife, go to open it and say..."Torx? Who in the world...?".

Mark
 
Yes. One name for the square tapered head bolts is "sickle bar bolts".

NOT sure what"s so odd about the longer bolts with the tapered heads... are they slotted?
 
No slots in the head of the longer bolt Bob. There were a bunch of mower bolts in the box with these two, so they might have came off of a horse drawn sickle mower.
 
The longer ones are to hold the steel ring on a wooden wagon wheel. Just replaced some on the neighbor's stage coach a couple months ago.

The hole in the steel ring is tapered so that they sit down in flush with the ring and don't cause a bump in the ride. I figured they would spin without a slotted head but they are sized just right and wedge themselves into the ring.
 
The square head one looks like the bolt used to hold the combination share and shin of an Oliver chilled moldboard plow. There was one bolt used to hold the part in place. Machine shops use similar looking bolts in holding assemblies in "T" slots
 
That square head bolt is like was used on McCormick mowers, both horse and tractor to hold the bar on and al;so used in the wheel to hold the hub in on a McCormick 3 bar rake-tedder. Would have no idea where to get them. Want to sell them? Friend is in the business of rebuilding those horse McCormick mowers for sale and use.
 
The square-headed one is a #4 head plow bolt. Like others have said, they were used for attaching some plow wear parts, usually cast or chilled parts, and for various places on sickle mowers.

AG
 
That IS NOT an ordinary plow bolt and a lot were 5/8" thread bolts, some 1/2" holding the bar on a mower. The ones in a rake wheel are only 3/8" and smallest I have seen.
 
(quoted from post at 01:06:57 08/11/14) That IS NOT an ordinary plow bolt and a lot were 5/8" thread bolts, some 1/2" holding the bar on a mower. The ones in a rake wheel are only 3/8" and smallest I have seen.


The most "ordinary" plow bolt today is the #3 head--round head, square neck.

The square headed one with the tapered neck pictured from what I see IS INDEED a #4 head plow bolt.

If there is a difference between an "ordinary" #4 plow bolt and something for a mower bar, please, do share.

AG
 
All that I know is that in the last 60 years I do not remember seeing a bolt like that on any of the plows I have been around. Ford, Ferguson, John Deere, McCormick, Allis Chalmers, Oliver, Moline, J I Case and David Bradley and this Bradley was not the version made by Oliver. Could you give me a location on a model of plow that used them?
 
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IHC used #4 plow bolts or "square countersunk head" plow bolts in IH "ACE" and "REX" plow shares, and some very old Chattanooga plow bottoms. Along with mower bars and shoes, they used them on some binder and reaper guards, and probably elsewhere, too.


AG
 
Oliver share with #4 plow bolt:
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Bolt hole close-up:

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Other old Oliver (pretty sure they're Oliver) shares that used these bolts:
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AG
 
A slightly different version of the bolt--an "oblong countersunk head" bolt:
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Head is rectangular instead of square.

AG
 
The ACE bottoms were never sold in my area so I have never seen them.I have seen the oblong head a time or two. Always willing to learn something. And I wish I could find a good source to buy new ones of those bolts. I do know that the McCormick No. 6 mower used a different size than the 25V mower or the No, 9 horse mowers. That size difference is why I did not replace the 5' bar on the No. 6 mower but did on the No. 9 mower with a 7' tractor mower bar. The No. 7 & 9 Mowers are high priced mowers around here and in big demand. Wish I could find more of them for rebuilding.
 

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