How OEMs qualify a second-source metal fabricator

Second-source qualification is the process of proving that a second manufacturer can build an existing part to print before you depend on them — a complete RFQ package, an evaluated quote, a documented first article, and a pilot order, in that sequence. OEMs run it to remove single-source risk, relieve a capacity-constrained primary, or shorten freight distance to a build site. Done in order, it takes weeks, not quarters.

This is the sequence we see run well (and badly) from the supplier side of the table, across two decades of enclosure and kiosk production for OEMs.

When does a second source make sense?

Four triggers account for most programs: a single-source part whose failure would stop your line; a primary whose lead times have stretched past your planning horizon; growth beyond the primary’s realistic capacity; and geography — a supplier near your assembly site or install region when the incumbent ships freight across the country. If none of those apply, a second source is optional insurance. If two apply, you’re late.

One honest note from the supplier side: shops can tell when an RFQ is a price check rather than a qualification. Real programs come with complete packages and a named quality requirement. Price-check RFQs get price-check effort.

What goes in the qualification package?

The quote is only as good as the package. Complete means:

Item	Why it matters
2D prints at current revision, plus 3D models	The print is the contract; the model drives programming. Mismatched rev between them is the classic qualification failure
Material spec, with acceptable substitutions stated	”CRS” is not a spec; ASTM A1008 CS Type B at a stated gauge is
Finish spec	Powder color/gloss/texture, masking, grain direction if cosmetic
EAU and release quantities	A part released 50/month is quoted and tooled differently than 5,000/quarter
Quality requirements	Inspection level, FAI format, material certs, packaging/labeling
Hardware and assembly callouts	Inserted hardware, weld studs, sub-assembly expectations

Withholding target pricing is normal. Withholding EAU isn’t — quantity drives process selection, and a shop guessing at volume will quote the safe (expensive) process.

What should a capable shop send back?

A qualification-grade quote answers with more than a number: exceptions and clarifications taken in writing, DFM notes where the print fights the process (a bend radius that wants one gauge up, a PEM callout too close to a bend), the FAI plan and documentation you’ll receive, and lead time split into tooling/programming, first article, and production. Silence on all of that from a drawing with known ambiguities means the shop either didn’t read it or plans to interpret it later — both expensive.

What does the first article prove?

Everything the certificate can’t. The FAI is a full dimensional report on the first production part against every drawing callout, with material certs and finish verification attached — the aerospace AS9102 format is the common template even far outside aerospace. It proves this shop’s process makes your part to print. Written FAI approval before volume release is the single gate we’d never let a customer skip, and the discipline runs both directions: it protects the shop as much as the buyer. (What a certificate does and doesn’t prove is its own topic — see what ISO 9001:2015 actually covers.)

How big should the pilot order be?

Big enough to run the production path, not the prototype path — typically 25 to 100 pieces for formed sheet metal. The pilot is testing things five prototypes never touch: fixturing repeatability, in-process inspection at rhythm, finishing in a production batch, packaging density, paperwork flow, and whether promised lead time survives contact with the schedule. Jumping from prototype approval straight to a 10,000-piece release skips exactly the failures that are cheap to find at 50 pieces.

What are the red flags during qualification?

• No exceptions, no questions on a drawing you know has ambiguities.
• No revision control — quotes that don’t state the rev they price.
• Vague quality answers — can’t name their registrar, can’t describe their FAI format, “we can do whatever you need” instead of “here’s what we do.”
• Traceability that stops at receiving — material certs exist but don’t tie to your job.
• Capacity claims without texture. Every shop says it has capacity; a credible one tells you what runs on which cell and where your work would slot.

How long does qualification take?

For conventional sheet metal and enclosures: plan roughly two to six weeks from PO to approved first article — driven by material availability, finishing, and any tooling — plus the pilot run. At our shop, standard-material enclosure parts land near the front of that range; exotic materials and long-lead hardware push toward the back. What compresses the timeline legitimately: a complete package and fast FAI disposition on your side. What compresses it illegitimately: skipping the FAI.

Bringing a part to Nevatronix

We’re built for exactly this engagement: build-to-print production from 1 to 50,000 units with FAI on every production order, lot traceability end to end on a MIE Trak Pro ERP, and forming, welding, hardware, powder coat, and assembly under one roof in Las Vegas — the model behind Everi’s and ecoATM’s production programs. Process-level specifics live on our Nevatronix Sheet Metal and Nevatronix Laser floors.

Run the sequence above on us: send the package, and judge the quote by whether it answers like this article says it should.

References

1. SAE AS9102 — Aerospace first article inspection requirement (the widely borrowed FAI format)
2. AIAG — Automotive Industry Action Group, publisher of the PPAP manual
3. ASQ — supplier quality management resources
4. ISO 9001:2015 — Quality management systems: requirements
5. ASTM A1008 — Standard specification for cold-rolled carbon steel sheet