Hi layman here,
Background:
We need some special cross section(semicircle) wire to produce cotter pins, and we found a workshop can do this using round wire. Surely by some kinds of pressing or rolling, I dont know exactly. And, we are providing raw materials(Inconel 625) to them.
Question：...
I think this means, we can use any length between 6.3-6.95 as nominal length, and apply +-0.4 tolerances to that nominal length.
(There are no REF "B3,C1,B6" in the drawing. "9.1" and "6.0" are located in the other part of this drawing, where i didn't show on this pic.)
There is something called AQL. If you are a QC staff, you should be familiar with this.
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I am Chinese from a Chinese factory. I am sharing my experiences dealing with our...
It seems US series have very close dimensions and specs as ISO 10243, only noticeable differences are colors and their classes naming.
So in which standard these US die springs' color are specified, like in ISO 10243 ?? I cannot find such info.
Spring is a simple torsion spring, having ~1.75 colis. Does not really matter.
Original material is (ASTM A401)EN 10270-2 FDSiCr on the drawing. I want to use (A228)music wire to replace this. Is it a viable replacement? It doesn't seem to be valve spring.
Grade is "M" in ISO 2768-1
Can you explain this a little?
Why to use ISO 2768-1 is simple. They usually dont have such 'complicate' part, most of them are helical springs. So in most cases, ISO 2768-1 is enough. So they probably think it can cover all.
Background:
We are a Chinese manufacturer that got an order of an EU client. They made a messed-up drawing, saying all tolerances as per ISO 2768-1, and need to inspect all dimensions(seems like they measured all dimensions from 3D model)
I already found angular tolerances(god, posts on the...
