55k engine - need help with supercharger drain screw!!!
#26
Out Of Control!!
You are correct that it is not a regular pitch. I've been to several local stores and tried a few plugs but no luck yet. The pitch seems to be a piping thread like NPT. Not what others suggested. I will try to go to fastenal tomorrow and pick something up for you. They are closed on the weekends.
#27
Senior Member
Join Date: Feb 2012
Location: London
Posts: 299
Likes: 0
Received 1 Like
on
1 Post
2004 E55K AMG Wagon
You are correct that it is not a regular pitch. I've been to several local stores and tried a few plugs but no luck yet. The pitch seems to be a piping thread like NPT. Not what others suggested. I will try to go to fastenal tomorrow and pick something up for you. They are closed on the weekends.
#28
Super Member
Thread Starter
Iv managed to "borrow" a supercharger nut, take it to an engineering firm and they have confirmed its a 10x1.0 nut, commonly used in high pressure hoses and connections.
Regular threads on M10 nuts are either 1.5 or at best 1.25. These are a little unique in that sense that its only a 1.0 pitch. I was told this is because of the pressures these nuts have to take, which i can only assume will be high in that supercharger, especially with all that heat.
But MANY MANY thanks to all who have helped, without your information and guidance i would have been completely and utterly lost.
A special thanks to Blackbenzz for running around trying to get the exact match, i know that couldnt not have been easy. If theres anything i can help you with in the future then please let me know.
Thanks chaps.
Regular threads on M10 nuts are either 1.5 or at best 1.25. These are a little unique in that sense that its only a 1.0 pitch. I was told this is because of the pressures these nuts have to take, which i can only assume will be high in that supercharger, especially with all that heat.
But MANY MANY thanks to all who have helped, without your information and guidance i would have been completely and utterly lost.
A special thanks to Blackbenzz for running around trying to get the exact match, i know that couldnt not have been easy. If theres anything i can help you with in the future then please let me know.
Thanks chaps.
#29
Senior Member
That's great to know the exact thread pitch and diameter. I havent search yet, but where did you end up sourcing your sc screw from finally? I would like to have a spare.
#30
Super Member
Thread Starter
Iv just ordered these earlier today as they look the exact same thing, but im not 100% sure until i get them and then fit them to the supercharger, which i wont know until the weekend.
But these are the only ones i could source here, they do ship internationally if needs be:-
http://wrekinpneumatics.fluidfitting...00220053/AKM10
#32
Super Member
Thread Starter
Oh yeah, its Metric alright. But your problem is the thread pitch. Like i said earlier most on an M10 screw/bolt will be 1.5 or 1.25 . . . . these ones are 1.0.
Just make sure you get the right thread thats all.
Just make sure you get the right thread thats all.