What kind of threat is on the Mercury bolts?

**killerpirate** · 10-19-2020, 03:32 AM

What kind of threat does the Mercury bolts have? Im looking for ring nuts (see image) to put on the upper bolts.
Its not metric.

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**killerpirate** · 10-19-2020, 03:49 AM

I mean the bolts with which the engine is bolted to the transom

**rock** · 10-19-2020, 07:51 AM

I mount my engines to the transom with 1/2 bolts either fine or coarse thread.

Rock

**racervboat** · 10-21-2020, 12:06 PM

1/2 inch fine or coarse threats sae. Treats are beer but liquor's quicker.

**perfmarine1** · 10-21-2020, 12:17 PM

It depends on the motor, std v6 and under 316 stainless steel or better but for V8 omc and merc they need to be much better or mfg supplied.

**FUJIMO** · 10-21-2020, 12:51 PM

...if your Mercury V-6 was mounted with the original stainless bolts, and still are, that came with the engine years ago, they would have been 1/2-20 fine thread bolts. not uncommon at all for rig shops to alter the length & thread of the engine mounting bolts though. 1/2-13 course thread bolts are commonly used also, as sourcing shorter or longer fine thread stainless bolts isn't possible for some shops over the years. course thread 1/2'' bolts have always been more readily available in different lengths, so thats what a lot of the shops went with. the fine thread bolts are always a better choice though, if you have the option. you are not going to find a thread-on ring, like the one you illustrate, in a 1/2-20 thread. only a course thread version.

**FUJIMO** · 10-21-2020, 12:56 PM

...why do you want to put those rings on the engines upper mounting bolts? to use as a boat lift, or to water ski with, or?

**InjectorService** · 10-21-2020, 01:05 PM

I saw a bass boat do something similar. It had cables with the threaded adjusters on them. Basically held the transom from ripping off. She was soft. lol

**Chaz** · 10-21-2020, 07:24 PM

What color shirt am I wearing .. ???

**FUJIMO** · 10-22-2020, 08:51 PM

Originally Posted by Chaz

What color shirt am I wearing .. ???

...paisley. a chameleon jumped on mine the other day. poor thing blew up...

**Chaz** · 10-23-2020, 09:47 AM

I am a welder .. not the machine, but the person ..

So I wear dark shirts, usually black .. keeps the light from bouncing off the shirt, to the lens .. and then back into the retina --->

RetinaLight-sensitive tissue layer inside the eye

I think the paisley would do just as much damage ...

Why did i ask about what color shirt .. because you cant see it. just like none of us know if the OP has a 10 horse kicker motor .. or one of the new porkchops ..

Kinda like axein how long day need to be ... wiffout masurin the tran~some fatniss

A case of too little info .. to make an accurate recommendation ..

Paisley ... really ..