The Contract Manufacturing Quoting Process, Step by Step

What the quoting process actually involves

A contract manufacturing quote is not a price list. It is a custom estimate of how much it will cost to produce your specific part at your specific volume, with the shop’s specific equipment, materials, and labour. The accuracy of that estimate depends entirely on how complete the information you send is. A clean package returns a clean quote; an incomplete package returns padding, change orders, or both.

This guide walks through the steps a typical RFQ moves through and what each side does at each stage. For the broader picture of where this fits in the engagement, see what is contract manufacturing and how to find a Canadian contract manufacturer.

Step 1: Build the RFQ package

Before you contact a single shop, assemble the complete package. The list below is the floor; anything missing forces the shop to guess or ask.

Drawings.

• 2D drawings of every part, every revision controlled.
• GD&T applied to every dimension that matters.
• Critical-to-quality features called out explicitly (datum schemes, inspection callouts).
• Surface finish requirements specified using Ra or Rz, not adjective (“smooth”).
• Notes that resolve common ambiguities: thread direction, edge treatments, marking requirements.

3D models.

• STEP format (Step AP203 or AP214) for universal compatibility.
• Native CAD (SolidWorks, Inventor, Fusion 360) optionally attached.
• Match the 2D revision exactly. Mismatched 2D and 3D is a common cause of bad quotes.

Material specification.

• Primary material with full grade callout (e.g., 6061-T6 aluminum, not “aluminum”; 316L stainless, not “stainless”; PA66-GF30, not “nylon”).
• Acceptable alternates if any. This often unlocks lower pricing if the shop has a different alloy or resin in stock.
• Certification requirements if the material needs cert traceability (aerospace, medical, automotive).

Finish and coating spec.

• Type and standard (e.g., Type II clear anodize per MIL-A-8625, powder coat to RAL 9005, electroless nickel per AMS 2404).
• Mask requirements if any surface is to remain uncoated.
• Cosmetic class for visible surfaces.

Volume.

• Annual expected volume.
• A realistic range (a “5,000 to 8,000 units” answer is more useful than “ballpark 5,000” because the shop can quote tooling amortization and break points).
• Order pattern (one-time pilot run, monthly schedule, blanket PO with weekly releases).

Certifications required.

• ISO 9001 baseline.
• AS9100 for aerospace.
• ISO 13485 for medical devices.
• IATF 16949 for automotive.
• NADCAP for special processes if applicable.
• Cannabis Act, NHP, food-grade as relevant for regulated end-markets.

Packaging and shipping.

• Pack-out spec: bag, box, dunnage, label.
• Ship-to address and Incoterms.
• Any drop-ship or kitting requirements.

Anything else the shop needs.

• Required documentation (PPAP level, first article inspection report, certificate of conformance, material certs, RoHS, REACH).
• Quality plan or APQP elements if the customer runs them.
• Sub-supplier restrictions (approved-vendor list if you have one).

If you cannot put all of this in one folder, you do not yet have an RFQ package, you have a draft. The shops will quote against what they have; the quotes will be soft.

Step 2: Sign NDAs and send

Before you release the package, sign mutual NDAs with each candidate shop. See the contract manufacturing NDA checklist for the clauses that matter.

Send the same package to every candidate. Identical scope is what makes quotes comparable. If you change the package mid-RFQ, send the update to every shop and reset the clock.

Three to five shops is the right shortlist size for most parts. Fewer than three and you have no benchmark. More than five and you are spending time you do not need to.

Step 3: Initial questions and clarifications

A good shop will come back within a day or two with questions. Common ones:

• Is this surface a cosmetic class A, or is the GD&T enough?
• Is the material spec exact, or are 5083-H321 or 5052-H32 acceptable alternates for 6061-T6?
• Does the 50,000 annual volume run in monthly batches or in two larger releases?
• Do you have an approved vendor list for plating, or are we to source it ourselves?
• What is the first-article inspection format (CMM report, PPAP level 3, customer-specific template)?

Answer these promptly and in writing. Send the same answer to every shop. Asymmetric information at this stage is the most common cause of incomparable quotes.

If a shop does not ask any questions, treat that as a flag. Either the package is unusually complete or the shop is not engaging with it carefully.

Step 4: Quote returns

A complete quote has, at minimum:

• NRE (non-recurring engineering). Tooling cost (mold, die, fixture). Programming and setup. First-article inspection setup. Sometimes payment milestones (50/50, 30/40/30) on the tooling.
• Per-unit price at the volumes you specified. Often broken out by quantity break (e.g., per-unit at 1,000; 5,000; 10,000). Process and material assumptions stated explicitly.
• Lead time for first article and for production lots.
• Validity period for the quote, typically 30 to 90 days.
• Assumptions and exclusions. What is in the quote and what is not (e.g., “quote excludes packaging beyond standard bagging,” “tooling cost assumes existing 50-ton press”).
• Terms (net 30, 50/50 on tooling, etc.).

The format varies. Some shops send a PDF cover sheet with a line-item breakdown; some send a one-page quote with a separate cost model. As long as the elements above are there, the format is the customer’s problem.

What to watch for:

• A quote that does not break out NRE from per-unit. Ask for the breakdown; you cannot model your cost without it.
• A quote that lumps “engineering and tooling” into a single number. Same issue.
• A quote that lists material and labour without naming the specific alloy or grade. The shop may be assuming a substitute.
• A per-unit price that is significantly below the others. Either the shop is more efficient (rare and good), or the shop misread the scope (common and bad).

Step 5: Compare the quotes

Build a simple comparison spreadsheet. Rows for each cost element (NRE, per-unit at each volume break, lead time, terms). Columns for each candidate.

The total-cost-of-ownership view across an annual forecast is more useful than any single price:

Total annual cost = NRE / (years amortized) + (per-unit × annual volume) + freight + duty + inspection + carrying cost

For a part with high tooling cost relative to volume (low MOQ work), NRE dominates and the per-unit comparison can be misleading. For high-volume parts, the per-unit price drives total cost and NRE is a rounding error. Run the math on your actual forecast, not on the per-unit alone.

Other comparison dimensions that matter as much as price:

• Lead time at the volumes you need.
• Certification fit for your end market.
• References in your industry.
• Communication quality during the quoting process. Shops that ask sharp questions during RFQ usually ship cleaner production.
• Tooling ownership and program flexibility in the master supply agreement they will offer.

The lowest-price shop is rarely the best fit. The shop that demonstrably understands the part, the volume, and the end-market is.

Step 6: Award, master supply agreement, and first article

Once you select a shop, the path is:

1. Award letter. A short note thanking the unsuccessful candidates and confirming the award to the winner.
2. Master supply agreement. Pricing, lead time, quality standards, tooling ownership, IP terms, exclusivity (if any), term and termination. This is the document that defines the relationship.
3. First PO. Triggers tooling and the first-article build. Often released against a 50/50 tooling payment schedule.
4. First article. The shop builds a small lot, runs inspection, and submits documentation. You sign off (or send back with deviations).
5. Production release. Steady-state runs against your forecast.

Plan on roughly one to three months from RFQ award to qualified production. Parts that need new hard tooling or regulatory documentation sit at the longer end.

How long the whole RFQ takes

For a typical engineered part with a complete package, expect:

Compress by:

• Having the package ready before you start contacting shops.
• Using a pre-negotiated NDA template with each shop.
• Awarding faster (don’t let “still comparing” stretch a week into three).
• Approving the master supply agreement template in advance with legal.

Slow it down by:

• Drip-feeding drawings.
• Changing the spec mid-RFQ.
• Letting the master supply agreement become a months-long redline.
• Skipping the first-article step and discovering tolerance issues in production.

The whole arc is predictable when both sides treat it as a structured process and not as a series of one-off email exchanges.

What happens after the quote: pricing changes

Once production starts, expect pricing to move under defined triggers:

• Material price changes flow through with documented mill or distributor invoices.
• Volume changes (up or down) renegotiate the per-unit on the next PO.
• Design changes issue a change order with new NRE and possibly new per-unit.
• Annual review rebases pricing at a specified anniversary, often on a productivity-improvement formula.

A good master supply agreement spells out these triggers up front. Without them, every price conversation becomes a fresh negotiation.

Routing the next step

Once your quote process is in motion, the related decisions are:

• Contract manufacturing NDA checklist: sign the right NDA before drawings go out.
• How to find a Canadian contract manufacturer: build the candidate list.
• MOQ explained: read the per-unit pricing curve in context.
• What is contract manufacturing: the foundational definition.

The Assembly network is built to compress the candidate-search part of this process. Send a complete RFQ package once, and matched Canadian contract manufacturers respond within two business days. That removes the slowest variable (finding the shops) and lets you focus on the comparison.

• Get a quote: send the package, get matched.
• Apply as a Founding Partner: Canadian shops wanting into the supplier network.