Fastener name

[stinkwheel]

I'm looking for an M8 nut that doesn't have a hex on it, just a round cross section on the outside and a socket head on the end. Ideally with a 10 or 11mm OD.

It's for fitting to a particularly tight plate manifold where the hex of the nuts interferes with the jubilee clip.

A bit like a sex bolt but without the flange at the top and ideally a tad thicker... Although I suppose I could always grind the flange off a sex bolt.

I suppose a hex on the top would also work providing it has a plain section (I thought these were called collar nuts, but apparently not).

Just don't know what they're called and if you don't know what they're called, you can't buy them.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[jaffa90]

Can only think of splined drive nuts?

[The Artist]

How much stud is exposed?

Maybe a sleeve nut or a turned down coupling nut?

[The Shaggy D.A.]

Trying to picture what you mean - something like this, but with one end closed, with a socket for an Allen key in?

https://i.accu.co.uk/360/_APC/HTBCN-A2/0_14.png?profile=square

If so, could you use one of these "cylindrical connector nuts" with a socket head bolt in one end?
____________________
Chances are quite high you are not in my Monkeysphere, and I don't care about you. Don't take it personally.
Currently : Royal Enfield 350 Meteor
Previously : CB100N > CB250RS > XJ900F > GT550 > GPZ750R/1000RX > AJS M16 > R100RT > Bullet 500 > CB500 > LS650P > Bullet Electra X & YBR125 > Bullet 350 "Superstar" & YBR125 Custom > Royal Enfield Classic 500 Despatch Limited Edition (28 of 200) & CB Two-Fifty Nighthawk > ER5

[Raffles]

Are you talking about something like this:-

https://www.efc-intl.com/viewitems/hex-head/phillips-truss-female-hex-head-sex-bolts

Edit: I'm aware that the above aren't metric.
____________________
A good loser will always be a loser.

[Pete.]

[stinkwheel]

[Pete.]

The original items looked pretty much like that, the one above is a reproduction.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Easy-X]

The most common thing seems to be "sleeve nuts" for furniture:

https://www.ebay.co.uk/itm/224389409851

Quick pass through the lathe?

Also try "barrel nuts" and "cylindrical nuts" optionally with "hex socket head" through Google Images and see if anything jumps out at you
____________________
Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[stinkwheel]

[BanditsHigh]

Just weld it

Or one of these, with the flange ground off ... https://www.orbitalfasteners.co.uk/products/m8-x-16mm-joint-connector-nut-steel-bright-zinc-plated

Then notices someone has already posted that type above

[stinkwheel]

It occurrs to me that I could get one of the ones The Shaggy D.A. posted and braze an allen head screw into one end.

I've had some bad luck with those things though, they aren't made of very good metal on the whole because they're designed to join two bits of shitty allthread but I'm sure there will be a supplier who is making them out of something better.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[ZebraDriver]

I think I have something that will do the job. Can you post or PM a sketch of exactly what you need

[stinkwheel]

[stinkwheel]

As you were folks. It turns out they actually make M8 nuts with an 11mm hex. I found an aviation supplier who does them. I thought 12mm was the working minimum. That extra 0.5mm clearance is all I need.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[The Artist]

Could you swap the stud for a regular m8 screw?

[stinkwheel]

[Pete.]

I cou;ld have made you a BSC-M6 or M7 stud that would have taken care of it properly. Aslo, what diameter is the jubilee clip? I have some very thin band ones, yours for free if one will fit.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Easy-X]

Another bodge: drop the washer and use a nylok? might just clear the jubilee clip.
____________________
Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[stinkwheel]

Cheers guys. I think these 11mm hex nuts will do the trick and they are aircraft grade for fitting plate manifolds to rotax aero engines so will be pretty robust.

The trouble with a nylok is the points of a standard 13mm hex foul the manifold. In fact the 12mm ones do too but not as badly so you can set a flat facing the rubber.

A thinner hose clamp would probably help but equally, it's a big thumper with a heavy carb so I want as much support as I can get, the standard ones are notorious for splitting the manifold or spitting the carb off (admittedly, with an Indian manifold, this is a proper Sudco one). I've got the back of the carb supported with a bracket round the air filter too.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.