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Dumb threading question


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19 replies to this topic

#1
gcode

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I feel like an idiot asking this ... but its a $200K piece of titanium and I DO NOT want to screw it up

1.5-12 UNJF ID thread .....
I can use a 12UN insert to thread it .... right ...

the root radius callout only applies to OD threads ... right ????

#2
kh012

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I feel like an idiot asking this ... but its a $200K piece of titanium and I DO NOT want to screw it up

1.5-12 UNJF ID thread .....
I can use a 12UN insert to thread it .... right ...

the root radius callout only applies to OD threads ... right ????


you are correct the only diff. on a unj id thread is the minor dia. is bigger to
fit the root on the od thread. if you are using a full profile id insert you
will have to bore the id to the correct dia.
there is no diff. on the id thrd gages other then the lable that says un or unj

HTH Ken,

#3
Bill Henderson

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Better safe than... oops...should've double checked... Sorry. :rtfm:

#4
gcode

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Thanks guys...I've got the big stuff all worked out,

I'm hate to blow these 2 parts out on something as dumb as using the wrong threading insert..

I asked the same question of inspection and they just confirmed the deatails posted above

#5
robk

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Here is a link to SAE AS8879 Rev.D spec. that you need G
  • gcode likes this

#6
GoetzInd

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If it fits it ships! Those specs are more of recommendations anyway.

Mike

#7
robk

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If it fits it ships! Those specs are more of recommendations anyway.

Not where I work at.

#8
gcode

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Here is a link to SAE AS8879 Rev.D spec. that you need G



Thank you...:thumbsup:

#9
gcode

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Not where I work at.


we are allowed to do weld repairs on many of our commerial parts... and we have great welders :whistle:

but this is Human Space Flight Critical hardware... Its either in print.. or in the trash

#10
hebrewhammer

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SpaceX stuff? Sounds fun!

#11
gcode

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Aerojet, Orion capsule

#12
Rocketmachinist

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Fun your working on my stuff. :w00t:

#13
BenK

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Not where I work at.


When you make stuff that helps propel 200+ people 500mph 30,000 feet into the air it is either to print or a fancy paper weight. :blink:

#14
Rocketmachinist

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When you make stuff that helps propel 200+ people 500mph 30,000 feet into the air it is either to print or a fancy paper weight. :blink:


Or if the part will not pass QC sometimes we throw it into the pools for astronaut training.

#15
CADCAM3D5AXIS

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swimming is Good :)

#16
Matthew Hajicekā„¢ -Midland Tech

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Pics:

http://www.boston.co...nstellatio.html

#17
GoetzInd

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H.O.L.Y $HIT are those some sweet pics. Thanks for posting!

Mike

#18
Joe788

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:blink:
Posted Image

#19
GoetzInd

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My thoughts exactly Joe.

Mike

#20
Joe788

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We make a nasty little aluminum trinket that's about 2"x2"x1" for the same Orion project. It's a housing for a switch for some hydrazine something or other. The stack of paperwork was at least 3X heavier than the parts. Our only non-conformance was that our certificate of conformance didn't state that the parts were lead-free. :lol: :wallbash: