M9 bolts

[bobs_garage]

Hi, I'm having an impossible time trying to find m9 x .75 bolts either at Ace or online. The thread is on my Milwakee M12 polisher and I'm trying to adapt some brushes for cleaning stuff.

I've searched bolt depot, etc but it seems that everyone goes m8 then m10.

What is even more frustrating is that there are lots of m9 taps and dies.

Thanks for any help,
Bob

 

[1/2 Cup]

Bob, I had never seen M9 bolts (and we are all metric out here) until I was working on a Rover K Series engine recently where they are used as stretch bolts to hold the engine assembly together.

To be honest I am not sure where you would get them.

May some one will chime in here.

Regards

 

[Viper98912]

What the heck is an M9 bolt, that's a new one...

 

[RocketScott]

Call Tacoma Screw... In Tacoma, WA.

They're not just a hardware store. They make stuff that doesn't exist.

If they want to charge too much for shipping send me a pm. I'm right down the street and can chuck it in the mail for you.

 

[Super Mech]

Try McMaster-Carr

 

[samss]

Maybe from Milwaukee? Part # 05-74-0250 is for an M9 screw, but I can't find the thread pitch.

 

[CJM8515]

Can you weld? Get metal rod, weld a nut to one side. Use M9 tap to cut threads you need. Ie making your own bolt. Or perhaps its possible to take a 3/8 bolt with only partial threads and cut the threads on that?

 

[370]

M9 bolts definitely exist but your right that they are tough to put your hands on!

 

[bobs_garage]

Thanks for all the replies, I'll give Tacoma a call. If you look at the service manual it shows the thread as m9 x .75

https://documents.milwaukeetool.com/54-32-2400.pdf

Thanks again for responses,
Bob

 

[gbick]

I believe the side post battery terminals often use M9 bolts.

 

[Hawke]

My 1969 Lotus Europa, with a Renault engine, uses M9 bolts. I could not find them anywhere. They have now been helicoiled to (I think) 5/16 UNC or 3/8 UNC.

 

[Super Mech]

I believe the side post battery terminals often use M9 bolts.

Nope. 3/8-16 is the thread size on side terminal batteries.

 

[tonycastec]

M9 is the size of several bolts in the Porsche M96 and M87 engines

 

[Nexussian]

Hi, I'm having an impossible time trying to find m9 x .75 bolts either at Ace or online. The thread is on my Milwakee M12 polisher and I'm trying to adapt some brushes for cleaning stuff.

I've searched bolt depot, etc but it seems that everyone goes m8 then m10.

What is even more frustrating is that there are lots of m9 taps and dies.

Thanks for any help,
Bob

Try Fastenall, I bought some 7mm Left Hand thread bolts from them.

 

[racerex]

Try Metric & Multistandard Components Corp in Hawthorn, NY. They are a wholesale distributor of metric fasteners and industrial components. They are one of the oldest “metric only” distributors in the USA. Their contact info is (888) 966-MMCC and their website is metricmcc.com.

I've been going by their facility for 20+ years on my way to work each day. I've stopped in a number of times over the years to get odd-ball metric bolts, etc. The sales staff are great and I'd say that 50% of the time, they don't even charge me for the items.....or they say, "How about $2". It's worth reaching out to them.

 

[CKC]

Metrics Unlimited, Warren Michigan

 

[Ironhorse74]

You should buy a lathe and a vertical mill and make your own.

 

[wssix99]

I'm probably late to the game here, but these odd little bolts are easy to get through parts supplies. Just google "parts" for your model number of polisher and you'll get a number of sites that will give you the schematic for the tool and the part number for the bolt.

 

[sikeward]

Did you ever have any luck finding the bolt size? I'm on the same mission. I would like to be able to use my McGuire's da in conjunction with the Milwaukee polisher.

 

[Stuart in MN]

I typed "buy M9 bolt" into Google and got a number of responses.

 

[bobs_garage]

I never found a bolt that fit the threads of the Milwaukee polisher. It's interesting that it's such a strange size and pitch. I've been tempted to try to tap it out to a normal/available size but that's pretty drastic.