The Engineer's Guide to Preparing a Manufacturing RFQ

Why a Strong RFQ Package Matters

A request for quote is not simply a formality — it is the foundation of every cost estimate, lead time commitment, and manufacturing plan your supplier produces. An incomplete or ambiguous RFQ forces engineers on both sides to guess, and guesses translate directly into budget risk, re-quoting delays, and surprises at first article. Investing thirty minutes in a thorough package saves weeks downstream.

Core Documents Every RFQ Should Include

Engineering Drawings

Supply a fully dimensioned, toleranced 2D drawing in PDF format. Revision-control the drawing with a title block that includes part number, revision level, material specification, finish requirements, and applicable standards. If your team works in 3D CAD, include the native file or a STEP/IGES export — model-based definition is increasingly common, but a 2D drawing remains the legal manufacturing authority for most contract shops. Ambiguous datum references and missing tolerances on critical features are the two most common sources of quoting delays.

3D CAD Models

Even when a shop primarily quotes from 2D drawings, a STEP file allows their programmers to verify geometry, check wall thicknesses, and begin toolpath planning before the job is awarded. This speeds first-article delivery considerably. Confirm the model matches the drawing revision you are submitting.

Bill of Materials and Sub-Component Details

For assemblies, provide a complete BOM listing every purchased component — hardware, bearings, seals, electrical connectors — with manufacturer part numbers and approved alternates where applicable. The more your supplier knows about what you intend to install, the more accurate their assembly labor estimate will be.

Specification Checklist

Material

Specify the alloy and temper by industry designation (e.g., 6061-T6 aluminum, 304 stainless, C360 brass). If a material certification or traceability to a heat lot is required, state that explicitly. Calling out "aluminum" without a grade leaves your supplier free to choose the lowest-cost option, which may not match your structural or corrosion requirements.

Surface Finish and Coatings

Define finish by type, specification, and any dimensional impact. Anodize type and class, plating thickness, powder coat color and gloss level, and passivation per ASTM A967 are all examples of details that affect both cost and lead time. Note whether finish applies to all surfaces or only specific faces — masking adds labor.

Critical Tolerances

Flag any dimension tighter than your drawing's general tolerance block. Highlight features that have functional importance: bore diameters, mating surfaces, positional callouts for fastener patterns. This helps the shop identify where inspection investment is justified and where it is not.

Quality and Traceability Requirements

If your program requires first article inspection reports, material certifications, certificates of conformance, or compliance with customer-specific quality clauses, list them in the RFQ. Discovering these requirements after award can significantly change the economics of the job.

Quantity, Delivery, and Flexibility

Provide the quantity you need quoted, but also share context: Is this a prototype run of five followed by a production release of five hundred? Are you open to amortizing tooling over multiple releases? Knowing the program trajectory helps a manufacturer offer better pricing structures and allocate capacity appropriately. Include your required delivery date and, where possible, the degree of flexibility in that date — a hard ship date for a trade show is a very different constraint than a soft development milestone.

ITAR and Export Control Considerations

If your part or program falls under ITAR or EAR jurisdiction, state this in your RFQ and confirm your supplier is registered. Disclosing controlled technical data to an unregistered facility creates legal exposure for both parties. Contact Mikron Manufacturing to confirm their current ITAR registration status and discuss your specific compliance needs before submitting drawings.

Putting It All Together

The best RFQ packages are organized, complete, and honest about program uncertainty. A single compressed folder containing your drawing, STEP file, BOM, finish spec, and a short cover note explaining program context will consistently generate faster, more accurate quotes than a terse email with a single attachment. Mikron's team reviews every submission and will reach out with clarifying questions when needed — but the less they have to ask, the faster your quote arrives.