DEMO — fictional range. Local brief only, NOT SENT. No personal data is collected or transmitted.
PART / FICTIONAL EXAMPLE
Precision flange
A flange with a raised hub and a six-hole bolt circle, turned and drilled in one setup so the bore and the circle share a datum.

How it is made.
The hub and the bore are turned in one operation. The bolt circle is then positioned from the bore rather than from the outside diameter, which is what keeps the two concentric.
Illustrative specification
- Bore
- Example · 34 H7
- Bolt circle
- Example · 6 × Ø9.6 on Ø76
- Flange
- Example · Ø110 × 11 mm
- Hub
- Example · Ø44 × 30 mm
- Concentricity
- Example · 0.02 mm
- Material
- Example · 304 stainless
Every value above is an illustrative example for a fictional range. It is not a quotation, a capability statement or a measurement of any real part.
What a first article confirms.
That the delivered part matches the drawing, dimension by dimension, on the features that carry load or locate something else. It does not confirm that the drawing describes the right part.
What it cannot confirm.
Whether the part survives its real use. That is established by testing under the real load and environment, and by measuring again after the part has been in service rather than only on delivery.