What should I include in a custom spring RFQ?
A clear request for quotation helps an engineering team assess feasibility before price and timing are discussed. A current drawing is the best starting point, but it is not the only way to begin.
If you have a drawing
Include the drawing number and revision, units, material or approved alternatives, critical dimensions, end features, estimated quantity and target application. Also identify the required cycle life, operating environment, test method and any packaging or traceability requirements. If the drawing has changed, state which revision is current and confirm the change in writing.
If the design is still open
Describe what the mechanism needs to do: retract, rewind, counterbalance or return a moving part. Share the available installation space, shaft or drum dimensions, required torque or pull force, working turns or travel, speed, duty cycle and estimated annual volume. Photos, a sketch or a short video can clarify how the spring connects to the rest of the assembly.
What happens next
The information is reviewed for technical feasibility and any missing inputs. A quotation can then state the applicable price basis, sample or tooling charges, test assumptions, trade and payment terms, validity period and estimated lead time. A quotation is not a substitute for confirming the final drawing and acceptance criteria.
You can begin with the information available. The earlier the operating conditions and expected volume are shared, the more useful the first engineering review can be.
