How to Structure a Sheet Metal RFQ for Better Quotes

Why Most Quotes Come Back Wrong

Vendors rarely price a sheet metal job incorrectly because of bad math. They price it incorrectly because of missing information. A drawing without a material specification forces the supplier to guess. A part list without quantities forces them to assume a production run. A tolerance call without a standard forces them to default to the safest, most expensive option.

When you send a package of files and a general email, the vendor has to build the context. They decide what the part is for. They decide what the material grade is. They decide if you need deburring or not. Those decisions become the baseline for the price. If two vendors make different assumptions, you get two very different numbers. The lower bid may be for a thinner gauge or a looser tolerance. The higher bid may include a finish you did not ask for.

A good RFQ removes the guessing. It turns a conversation into a data exchange. The goal is not to write a legal contract. The goal is to hand the vendor a complete set of instructions so they can calculate the labor, material, and setup costs with confidence.

What to Include Before You Send the Files

Before you draft the request, you need to verify your own data. Do not send a file that is still a work in progress. If the drawing is in CAD and the PDF is from last week, the vendor will use whichever one is easier to read. That creates version control issues later.

Check your drawing package first. The title block must be complete. Include the drawing number, revision date, and part name. The material specification must be explicit. Do not just write “steel.” Write “A36 steel, 18 gauge, 20x30 inches.” If you are using stainless, specify the grade, such as 304 or 316, and the thickness. If you are using aluminum, specify the alloy series and temper.

Next, check your tolerances. General tolerances are usually fine for functional parts, but they are expensive for precision assemblies. If a part fits into a housing, the critical dimensions need a callout. If a hole needs to align with another part, that diameter needs a specific tolerance. General tolerances are the default. Specific tolerances are the exception.

Finally, check your quantities. A prototype run of five units costs differently than a production run of five hundred. The setup fees are the same, but the labor per part drops. Include the total quantity and, if possible, the expected reorder frequency. This helps the vendor decide if they need to build custom tooling or if they can use their existing press brake and bending station.

Step-by-Step RFQ Structure

1. Start with the Part List.
   List every unique part in the assembly. Give each part a unique reference number. For example, “Part 001: Front Bracket” and “Part 002: Rear Grommet.” This prevents confusion when the vendor asks about specific components. It also makes it easier to update the list if you add or remove parts later.

2. Specify Materials and Thickness.
   Under each part, list the material and thickness. Be precise. Use imperial or metric, but stick to one system. “14 gauge” is acceptable for standard steel, but “1.5 mm” is better for stainless or aluminum. If you have a specific material grade, include it. If you are open to substitutes, state that clearly. “Any standard mild steel” is different from “Must be A515” steel.

3. Define the Processes.
   List the fabrication steps required. Do not assume the vendor knows how you want the part made. If you need laser cutting, say so. If you need waterjet for a thick plate, specify that. If you need a specific bend radius or a specific deburring method, include it in the process notes. This section prevents the vendor from using the cheapest method that technically works but fails your functional requirements.

4. Call Out Tolerances and Fits.
   This is where many RFQs fail. Do not rely on the drawing title block for general tolerances if you have critical fits. List the critical dimensions that must hold. For example, “Hole diameter: 0.25 inch, tolerance +/- 0.005.” If the part must fit into a specific housing, state that. “Must fit into standard 2-inch housing” gives the vendor context. “Must fit into housing with 0.010 inch clearance” gives them a number.

5. State Quantities and Schedule.
   Include the total quantity for the initial order. If you expect future orders, mention that. “Initial order: 50 units. Expected future orders: 50 units per quarter.” This helps the vendor price the setup correctly. If you need the parts by a specific date, include the target date. Do not just say “ASAP.” “Required by the first of next month” is actionable.

6. List Surface Finish and Coatings.
   If you need a finish, specify it. “Mill finish” is one thing. “Powder coat, RAL 9002 black, 2 mil thickness” is another. Coatings add cost and lead time. If you need a specific plating, such as zinc plating or anodizing, include the specification. If you are unsure, say “Standard finish per vendor recommendation.” This allows the vendor to suggest a cost-effective option that still meets your needs.

7. Include Packaging and Shipping Requirements.
   Do not forget how the parts will be handled. If the parts are large, they may need crating. If they are small, they may need individual boxing. If they are for a clean environment, they may need anti-static packaging. State your requirements. “Parts must be individually bagged and packed in a single pallet” is clear. “Just send them” is not.

8. Request a Breakdown of Costs.
   Ask the vendor to itemize their quote. Do not just ask for a total price. Ask for material cost, labor cost, setup fees, and finish costs. This helps you compare quotes from different vendors. If Vendor A charges more for labor but less for material, you can see why. It also helps you identify if a vendor is using a cheaper material than you specified.

Common Mistakes That Inflate Costs

The most common mistake is sending a drawing without a part number. If the vendor does not have a reference to link the price to, they have to guess which part is which. This leads to errors in the quote and rework later.

Another mistake is assuming “standard” means “cheap.” Standard tolerances are the baseline, but they still cost money. If you do not specify a tolerance, the vendor will use their standard, which is usually the most expensive option for their equipment. If you need a tighter tolerance, specify it. If you do not, accept the standard.

A third mistake is mixing units. If your drawing is in inches and your email is in millimeters, confusion happens. If your material is in pounds and your labor is in hours, the math gets messy. Stick to one system. Imperial is common in North America. Metric is standard in Europe and Asia. Be consistent.

Finally, do not send the RFQ in a chain of emails with attachments. Send a single document or a single email with a clear subject line. A long email chain makes it hard to find the latest version. A single, organized document is easier to process.

Verification Before Approval

Before you approve the quote, run a final check. Look at the material. Did the vendor use the grade you specified? Look at the thickness. Did they use the gauge you requested? Look at the finish. Did they include the coating you asked for?

Check the setup fees. If you are ordering a small quantity, the setup fee should be higher per part. If you are ordering a large quantity, the setup fee should be amortized. If the vendor includes a setup fee but you are ordering a standard part that they already have tooling for, ask why.

Review the lead time. Is it realistic for the quantity? If you need a rush job, the lead time should be shorter and the price higher. If the lead time is very short for a large quantity, ask how they will manage the capacity.

Finally, check the terms. What is the payment schedule? What is the delivery point? What happens if the part fails? These details are not about the fabrication itself, but they protect your project.

Building a Reusable Sheet Metal RFQ Template

You do not need to start from scratch every time. Create a document that you can copy and paste for each new project. Include sections for Part List, Material, Process, Tolerances, Quantities, Finish, and Packaging. Fill in the blanks for each project. Save the filled-in version as a PDF and send that.

This approach creates a standard fabrication request format that your team can follow. It reduces errors and speeds up the quoting process. It also makes it easier to compare quotes from multiple vendors. When every request follows the same structure, the quotes come back in a comparable format.

A well-organized sheet metal RFQ template is not just a document. It is a tool for control. It removes ambiguity. It reduces risk. It gives you the data you need to make a decision based on facts, not guesses.