How to Write an RFQ That Gets You Better Supplier Quotes
Most sourcing delays don't start with a bad supplier. They start with a bad RFQ.
A request for quote is the first real conversation between a buyer and a potential manufacturing partner, and if it's missing information, everything downstream slows down. Suppliers have to come back with clarifying questions. Quotes come in wildly different because everyone filled in the blanks differently. Timelines stretch from days into weeks before a part is even in production.
Here's what actually belongs in an RFQ if you want quotes you can compare and act on quickly.
Start with the part, not the pitch
Suppliers don't need your backstory. They need your part. Lead with drawings, specs, and material requirements before anything else. If you have a 2D drawing, a 3D CAD file, or even a rough sketch with dimensions, include it. A written description alone forces suppliers to guess at geometry, and guesses turn into inflated quotes that account for uncertainty.
Specify quantity, and be honest about it
Quote pricing shifts dramatically based on volume. A price for 50 units and a price for 5,000 units can differ by an order of magnitude because tooling, setup, and material sourcing all scale differently. If you're not sure of your exact volume yet, give a range, but don't ask for a quote on 100 units if you're actually planning to order 10,000 once the design is proven out. Suppliers price differently for prototype runs versus production runs, and that distinction should be clear from the first message.
Include tolerances and critical features
This is where a lot of RFQs fall short. "Standard tolerances" means something different to every shop. If your part has features that are more critical than others, whether that's a bore diameter, a flatness requirement, or a surface finish spec, call them out specifically. Everything you don't specify, a supplier will price using their own default assumptions, and those assumptions won't always match what you actually need.
Name the material, not just the category
"Aluminum" isn't a material specification. 6061-T6 aluminum is. If your part requires a specific alloy, grade, or certification (like food-grade or medical-grade material), state it. If you're open to alternatives that meet the same performance requirements, say that too. Flexibility here can actually get you better pricing, but only if suppliers know it's on the table.
Ask for what you need back, not just a number
A quote is more than a price. Depending on your part and industry, you might need:
Lead time for both prototype and production runs
Tooling costs, if applicable, and who owns the tooling
Inspection and documentation (material certs, first article inspection reports, ISO compliance)
Packaging and shipping terms
If you don't ask for these upfront, you'll often get a bare price, then have to go back and forth to fill in the rest, which is exactly the delay an RFQ is supposed to prevent.
Set a realistic response window
Give suppliers enough time to price the part properly, typically five to ten business days depending on complexity, and be clear about your decision timeline. Rushed RFQs tend to get rushed quotes, and rushed quotes are the ones most likely to change once production actually starts.
Where this fits into the bigger sourcing picture
Writing a strong RFQ matters most in what we call the pre-RFQ phase, the stretch of sourcing before a request even goes out, where buyers are identifying and vetting who's worth quoting to in the first place. A well-written RFQ sent to the wrong suppliers still wastes everyone's time.
That's the gap TandemOne is built around. Buyers can search pre-vetted, ISO-verified suppliers by capability before sending a single request, so the RFQ goes to shops that can actually deliver rather than a broad list hoping something sticks. Our guide on how to find suppliers covers how to narrow that list before you get to the quoting stage. And if you're curious how the platform supports buyers through that process end to end, learn more about TandemOne.
A good RFQ doesn't guarantee a good supplier. But it's the fastest way to find out which suppliers are worth working with, and which ones just look good on paper.
