Groovy threads...
 

Can somebody tell me why the groove is cut down the middle of the threads. I've seen it before and was just curious...

Re: Groovy threads...
 

I would assume it would be used as some form of a lock type but not 100% sure. Hopefully someone else will chime in.

Re: Groovy threads...
 

home made thread chaser

Re: Groovy threads...
 

home made? all the bolts on the pto cover of my 465 have it, as well as some others (can't remember which) on my truck.

Re: Groovy threads...
 

I wonder if that groove has locktite (or some other locking type plastic) in it before it is installed?

Re: Groovy threads...
 

Sorry treveiger I read your post but it didn't sink in (its early).

Re: Groovy threads...
 

Early? no, it's late!! hehe

Come to think of it, when I first came across one of these I thought the threads were chewed up because I could scrape out what was in the groove, albeit not too easily. Probably Locktite as you guys mentioned.

Re: Groovy threads...
 

The groove holds a plastic strip that acts as a thread locker. the bolts for the PTO covers & the top cover have them on some 465's.

Re: Groovy threads...
 

Thanks B.W., appreciate the info.!

Re: Groovy threads...
 

That's great to learn. Thanks for the contribution.

Re: Groovy threads...
 

I came across a prevailing torque nut at the parts store yesterday and thought the name of it was interesting, but no time to look into it. Of course I had no idea it was related my question when posted here... but what do you know...

The bolt in my picture at the beginning of this thread is a - Prevailing Torque Type Fastener - you can read about them about 1/4 of the way down the page HERE.

In brief...
Material additive fasteners work by wedging the fastener into close proximity with the mating thread, causing a metal-to-metal drag in the circumferential direction directly opposite to the material locking device. The material used to produce the wedge customarily is an engineered plastic.

Re: Groovy threads...
 

So to work properly as originally intended, since they no longer have the plastic insert, you'd need new bolts, right? I thought these were metal to metal, like the metal version of a nylock nut.

Thread locker and luck are probably sufficient, I mean in theory, to be "like new".