Nut M10 x 1.5 mate into bolt of 3/8" x 16 UNC ?

[abdulbadii]

Can a 4.5 mm long nut M10 x 1.5  fit/mate into bolt of 3/8" x 16 UNC ?

[themadhippy]

youll get about 1/4 turn on the nut and thats yer lot.

[abdulbadii]

Here's real case:

Won't manage to acquire the M10x1.5 bolt
only found 3/8" x 24UNF in market and it's not yet bought

the most common grinder flange fastener nut is, I think, hopefully wrong, is m10x1.5, and try to have its mating bolt

will the flange nut mate to the market only available 3/8" x 24UNF ?

[Muttley Snickers]

Can a 4.5 mm long nut M10 x 1.5  fit/mate into bolt of 3/8" x 16 UNC ?

If this is to secure a high speed grinder flange or blade don't even think about it.   

Aside from the obvious risk this is what can happen when you start mixing metric, imperial and other thread types. At 4:20 in the video a 300hp outboard falls off at high speed due to a big screw up by the boat builders mechanic. 

     

[themadhippy]

Won't manage to acquire the M10x1.5 bolt

why not there bog standard,ive a load of em sitting about 10ft away on my work bench

the most common grinder flange fastener nut is, I think, hopefully wrong, is m10x1.5

is it? over here 14mm is fairly standard for angle grinders

[Doctorandus_P]

What a bunch of idiots.
Ditching an expensive outboard motor just because of a loose screw.
Apparently these guys don't have to pay for a replacement themselves, or they have more money than they can handle.

Why not just pull the motor a bit to the side, so it does not interfere with the screw of the other one and then limp home?

Heck, even calling the coastguard and pay for being towed home is probably cheaper then a new motor.

[Ian.M]

Better to loose the motor than the boat.  With it hanging there swinging in the waves, it could have damaged the other motor at any time, and a boat with no propulsion beam on to the waves is at high risk of capsize - all it takes is ONE breaking wave higher than the beam  width and it can flip you.   Slinging the outboard to the side under the stern isn't an option in that sea state - its not a sailboat so doesn't have the winches to get it there, they didn't have enough crew to manhandle it, the risk of serious injury getting a line round the foot or leg is unacceptably high, the risk of hull damage is far too high, and the boat would have been virtually uncontrollable with that much drag under the stern on the opposite side to the remaining propulsion.

OTOH in that area the ten fathom line runs a mile or two out from the coast, so once the steering linkage was cut detached^* and the immediate danger was reduced, I'd have tried to hitch a very long line to the umbilical before cutting it, lead outside the guard rail, and up to the engine, so it doesn't foul when the motor drops with a fender or any other convenient float on the other end. Maybe they just didn't have a long enough line quickly accessible, or maybe they just didn't want the additional risk with a child on board.

They did recover the motor, by diving on the GPS waypoint, in 100' of water:
https://youtu.be/rbzk42XW4ik
and Alfred Montaner rebuilt it:
https://www.youtube.com/playlist?list=PLilx-dswyaa5LRTaHt6jv5Em9P8Im8Q4z

* Power-boaters are a different breed - any experienced yachtie would have had heavy duty bolt cutters, and a long heaving line, often with floatation on the end of it, stowed where they could be grabbed in seconds.

[Doctorandus_P]

Ditching the motor and retrieving it later is indeed a quite sensible option.

[Ian.M]

@abdulbadii,
Most auto parts distributors should stock metric bolts as import cars are pretty much all metric, or McMaster-Carr have more choice of M10 metric screws & bolts than you can shake a stick at: https://www.mcmaster.com/screws/system-of-measurement~metric/thread-size~m10/thread-pitch~1-5-mm/
If you don't care about the grade of the bolt, there are even plenty of M10 ones on Amazon.com.

[Infraviolet]

abdulbadii: you've posted a lot of mechanical fabrication questions recently. I'm guessing they all relate to a single project. As some of them sound like you've driven yourself in to some unusual corners during this project with other elements of your design, do you maybe want to start a thread describing the project overall so people can advise as to ways of bringing its constituent elements together?