Manufacturing quotations are only as useful as the information provided to the supplier. When requirements are incomplete, manufacturers must make assumptions about material, tolerances, tooling, inspection, production quantity, finishing, packaging, or delivery. Those assumptions can produce quotes that appear comparable while actually covering different scopes of work.
A well-prepared request for quote, or RFQ, gives suppliers enough technical and commercial information to determine how the part will be manufactured, what resources are required, and which costs should be included. Once a supplier is selected, those same requirements can become the foundation for purchase orders and longer-term production agreements.
What Is a Manufacturing RFQ?
A manufacturing request for quote is a package of technical and commercial information sent to potential suppliers so they can evaluate a component or production program and provide pricing, tooling, lead time, and manufacturing terms.
RFQs can range from a drawing and requested quantity for a simple machined part to a large package containing multiple assemblies, specifications, bills of material, quality requirements, forecast quantities, testing instructions, packaging standards, and tooling expectations.
The goal is not simply to obtain the lowest number. The goal is to obtain quotations that reflect the actual production requirement closely enough that suppliers can be evaluated on a comparable basis.
What Should Be Included in a Manufacturing RFQ?
The exact information depends on the part and process, but most RFQs benefit from several core elements.
How the Manufacturing Quoting Process Works
The buyer sends drawings, specifications, quantities, delivery requirements, and other relevant information to potential suppliers.
The manufacturer evaluates geometry, tolerance, material, equipment, tooling, cycle time, inspection, secondary work, and production volume.
Suppliers request clarification when drawings, quantities, finishes, tolerances, or commercial expectations are unclear.
The supplier determines machines, tooling, setups, labor, materials, outside processes, inspection methods, and expected production time.
Material, labor, machine time, setup, tooling, inspection, processing, overhead, packaging, and other costs are estimated.
The manufacturer provides pricing, tooling charges, lead time, minimum quantities, validity period, and commercial assumptions.
The buyer compares scope, capability, cost, lead time, quality, assumptions, and supplier risk.
Production is awarded after technical and commercial requirements are agreed and any remaining questions are resolved.
How to Compare Manufacturing Quotes
Two quoted unit prices should not be compared until the included scope is understood. One supplier may include material and plating while another quotes only machining. One may include inspection reports while another treats them as an additional charge.
| Quote Element | What to Review |
|---|---|
| Unit Price | Confirm the quoted quantity, material, processing, inspection, packaging, and delivery assumptions behind the unit price. |
| Quantity Breaks | Compare how pricing changes at prototype, low-volume, batch, and higher-volume production quantities. |
| Tooling | Determine whether tooling is included, separately charged, reusable, customer-owned, or supplier-owned. |
| Material | Confirm material grade, condition, certifications, minimum purchase quantities, and any material-price assumptions. |
| Secondary Processing | Verify whether plating, coating, heat treatment, grinding, cleaning, or other outside work is included. |
| Inspection | Review whether first article, dimensional reports, testing, traceability, or special inspection is included. |
| Lead Time | Separate tooling lead time, material procurement, first article, production, outside processing, and normal repeat lead time. |
| Freight | Determine whether transportation, expedited shipping, duties, or other logistics costs are included. |
A quote with a higher unit price may represent a lower total production cost if it includes better tooling, fewer outside processes, stronger quality controls, shorter lead time, or more reliable delivery.
What Goes Into a Manufacturing Quote?
Manufacturing prices reflect the resources required to produce an acceptable component, not simply the amount of material in the finished part.
Material
Raw material price, purchased quantity, yield, scrap, certifications, special grades, and material availability.
Machine Time
Cycle time, machine type, number of operations, setup time, automation, and production rate.
Setup & Handling
Programming, setup, loading, unloading, deburring, assembly, inspection, packaging, and other labor requirements.
Tooling
Fixtures, cutting tools, molds, dies, gauges, workholding, assembly fixtures, and custom production equipment.
Secondary Processing
Heat treatment, plating, coating, grinding, painting, testing, marking, cleaning, and other outsourced operations.
Quality & Inspection
Measurement time, special gauges, reports, first articles, testing, certifications, and documentation.
Tooling Costs, Ownership, and Maintenance
Tooling can create some of the largest misunderstandings in a production agreement because tooling means different things across manufacturing processes.
Injection molds, stamping dies, casting dies, fixtures, gauges, workholding, welding fixtures, cutting tools, forming tools, assembly fixtures, and special test equipment may all fall under the general category of tooling.
Questions That Should Be Resolved Before Production
Tool ownership and physical possession are not necessarily the same. An OEM may own a mold or stamping die while the supplier stores, maintains, and operates it at the manufacturing facility.
What Should a Production Agreement Define?
Once a supplier is selected, the production relationship should clearly define the responsibilities that affect cost, quality, schedule, and risk. The level of detail depends on product complexity and the importance of the supplier.
Identify the drawings, models, material requirements, revisions, standards, and other technical documents that control production.
Define unit pricing, quantity breaks, tooling charges, setup costs, minimum orders, and conditions that may trigger price changes.
Establish order sizes, forecasts, blanket orders, scheduled releases, minimum quantities, and expected annual volume where appropriate.
Separate initial tooling and qualification lead time from normal repeat-production lead time.
Define inspection, acceptance criteria, documentation, traceability, first article, testing, and nonconformance requirements.
Document ownership, payment, maintenance, storage, replacement, transfer rights, and disposition.
Identify approved materials, substitutions, certifications, customer-supplied material, and purchasing responsibilities.
Establish labeling, protective packaging, part separation, palletization, reusable containers, and shipment requirements.
Clarify responsibility for raw materials, work-in-process, finished goods, safety stock, and obsolete inventory.
Define how engineering revisions, process changes, material substitutions, and supplier changes are communicated and approved.
Quality Requirements in Manufacturing Agreements
Quality requirements should be identified before pricing is finalized because inspection and documentation can materially change manufacturing cost.
Engineering Changes During Production
Product designs often change after suppliers have already created programs, tooling, fixtures, material inventory, or work-in-process. A controlled change process reduces the risk of mixing old and new requirements.
Manufacturing Categories Commonly Quoted by OEMs
RFQ structures vary by manufacturing method. Machining quotations often focus on material, setups, cycle time, and tolerance, while molding or stamping programs may have larger dedicated tooling costs and greater dependence on expected production volume.
Production Categories for RFQ Research
The ANONMGUR resource network includes manufacturing references that correspond with processes commonly sourced through industrial RFQs.
Common Manufacturing RFQ Problems
Many quotation problems begin with incomplete requirements rather than supplier performance. Missing information forces each supplier to make different assumptions.
Problems That Make Quotes Difficult to Compare
Strong RFQs reduce uncertainty without overprescribing the manufacturing method. When a process is not mandatory, suppliers should have room to recommend production methods that improve manufacturability, cost, quality, or lead time.
A Good Manufacturing Quote Starts With a Clear RFQ
Manufacturing RFQs should define the technical and commercial requirements suppliers need to develop realistic pricing and lead times. Clear drawings, quantities, materials, tooling expectations, quality requirements, secondary processes, packaging, and delivery terms create quotes that are easier to compare and production agreements that are easier to manage after the supplier is selected.