Liberty_Machine
Aluminum
- Joined
- Feb 28, 2017
So I need to source some gages for an upcoming job. The customer requirements state a .001" type 3 hardcoat, no masking. So, I sent off the thread sizes and that plate spec to a couple thread gage shops. Within a day I hear back from them both. The thread gage dimensions don't agree between the two shops...
I pressed them both to confirm that these were gages for .0005" buildup, to which they said both said yes.
Hardcoat puts .0005" into the material, and .0005" external. I know it's a 4:1 ratio on the P.D, but I'm uncertain of the math involved to calculate the following:
Major Diameter
Pitch Diameter
Measurement over wires
Thread sizes are:
1.187"-16 3B
.250-28 3B
The lead time on one of the shops was 9-12 weeks, the other was half that. But, I don't even know which one is the correct dimension. Would rather solve that before dropping $600 in gages only to find out they aren't correct.
I pressed them both to confirm that these were gages for .0005" buildup, to which they said both said yes.
Hardcoat puts .0005" into the material, and .0005" external. I know it's a 4:1 ratio on the P.D, but I'm uncertain of the math involved to calculate the following:
Major Diameter
Pitch Diameter
Measurement over wires
Thread sizes are:
1.187"-16 3B
.250-28 3B
The lead time on one of the shops was 9-12 weeks, the other was half that. But, I don't even know which one is the correct dimension. Would rather solve that before dropping $600 in gages only to find out they aren't correct.