Check out what I'm working on now.

[A.J.Sims]

15-5 stainless steel head studs and nuts. Was looking for a step above all the chromoly studs out there and discovered the whole new world in stainless steel. Making 10mm studs with 3/8-24 fine thread and large 3/4” flange 9/16 nuts all from 15-5 stainless and are 1/2” longer than stock. Also making a 6-stud kit at the same time. With all the parts going over seas thought its a good time to make some USA stuff!
I know LN Engineering offers stainless studs for the nickies but what about other use? OK it's not cheep but u get what u pay for and with all the new high compression/NOS and turbo combos out there why not?

[marty hiskey]

hey AJ as you know i have been in the marine business now almost 24 years and the stainless hardware i see has always been a issue. it seems to gaul very easy especially when a lot of pressure is applied to to the threads. lubricant helps but it still seems to flake a small piece of stainless when threading then it seizes up the nut on the stud. this material you are using is this like medical grade stainless. i always thought chromoly was stronger. i am not trying to knock your product just trying to get a better idea of what you are working with thats all. maybe the stuff wait what am i saying it probably is the stuff i get is from china. lol

[Darren DVKK- K-Roc]

They do look pretty however threads on head studs need to be rolled not machined to be correct. there looks to a fairly sharp machining edge at the base of your thread and this will also be a very high stress point.

Along with manufacturing HPG Diesel engines here at Westport we also do high pressure and Cryogenic LNG tanks and pumps, a lot of r&d goes into the parts and I have seen the pain the Engineers go through to design a proper strength 8mm stud for the application, unfortunately it's not as easy as spinning them out on the lathe.

[A.J.Sims]

Hi Marty. How's the weather? You got snow?
On lower grade stainless the micro welding can happen or different hardness metals are mixed like chromoly with stainless. Also on the standard grades stainless like fasteners. That's why I'm starting with a aircraft grade 15-5 on the studs and nuts and have them both heat treated to over 190,000 psi.

In the aircraft industry they switched from chromoly 20,30 years ago and beside aluminum and titanium  mostly everything is made from higher grades of stainless. I am using a aircraft hardware manufacture to make the studs and nuts to my specks but with there influence! In the pick they are the samples for checking length and fit around barrels, they also have a “J” thread. Once they are finished, heat treated and tested I will post all the tensile strength info, certifying specs and ratings. Just giving a little look at what I'm working on for the high power guys!

[marty hiskey]

no good snow yet anyway. they where predicting a good storm for this weekend but now they are saying it is moving out to sea. was probably going to drop anything from 6-12" of snow. i kinda was looking forward to it this time so i can go and play with the '69 bronco. oh well. sure there will be more storms coming. the stuff your working on looks great we need more american made stuff in our hobby besides the good german stuff out there already. good luck

[Bad bug]

15-5 stainless steel head studs and nuts. Was looking for a step above all the chromoly studs out there and discovered the whole new world in stainless steel. Making 10mm studs with 3/8-24 fine thread and large 3/4” flange 9/16 nuts all from 15-5 stainless and are 1/2” longer than stock. Also making a 6-stud kit at the same time. With all the parts going over seas thought its a good time to make some USA stuff!
I know LN Engineering offers stainless studs for the nickies but what about other use? OK it's not cheep but u get what u pay for and with all the new high compression/NOS and turbo combos out there why not?

AJ can these studs be used in a waterboxer engine, the studs will be exposed to coolant.

[fiatdude]

You gonna have case savers made too???

[marty hiskey]

Hi Marty. How's the weather? You got snow?
On lower grade stainless the micro welding can happen or different hardness metals are mixed like chromoly with stainless. Also on the standard grades stainless like fasteners. That's why I'm starting with a aircraft grade 15-5 on the studs and nuts and have them both heat treated to over 190,000 psi.

In the aircraft industry they switched from chromoly 20,30 years ago and beside aluminum and titanium  mostly everything is made from higher grades of stainless. I am using a aircraft hardware manufacture to make the studs and nuts to my specks but with there influence! In the pick they are the samples for checking length and fit around barrels, they also have a “J” thread. Once they are finished, heat treated and tested I will post all the tensile strength info, certifying specs and ratings. Just giving a little look at what I'm working on for the high power guys!

well A.J. we finally got snow and boy did we get it. i got about 18-20" i would say in my area. i did get to play with the bronco in some virgin snow on the streets in my area. went trhough it like i was driving normally. i had my fun and now i am done with this stuff. lol

[axm48ida]

Darren,
 do you work as wesport? years back most of our fleet was the wesport/cummins LNG setup. we have a dozen or less still running.
now back to the stainless hareware......

They do look pretty however threads on head studs need to be rolled not machined to be correct. there looks to a fairly sharp machining edge at the base of your thread and this will also be a very high stress point.

Along with manufacturing HPG Diesel engines here at Westport we also do high pressure and Cryogenic LNG tanks and pumps, a lot of r&d goes into the parts and I have seen the pain the Engineers go through to design a proper strength 8mm stud for the application, unfortunately it's not as easy as spinning them out on the lathe.