A quote-ready mold component BOM should give every line item a unique reference, controlled technical basis, quantity and commercial requirement. A structured BOM helps engineering and purchasing compare quotations on the same scope instead of reconciling different assumptions later.
This checklist is for spare parts, replacement components, standard items and drawing-based custom mold components. It is not a complete mold-tooling RFQ; keep full mold design, validation and molded-part requirements in a separate controlled package.
Minimum fields for each BOM line
- Line number and buyer part number
- Product name or component family
- Drawing or specification revision
- Complete dimensions and units
- Material, hardness and treatment
- Critical tolerance, fit or surface requirement
- Quantity and unit of measure
- Required inspection records or certificates
- Packaging, marking and delivery requirement
1. Use one controlled reference per item
Give each BOM line a stable line number and internal part number. The drawing name, drawing revision and attached file name should match that line. Do not mix obsolete and current revisions without clearly marking their status.
If several parts form a matched set, identify the relationship and state whether they must be quoted, manufactured or inspected together.
2. Separate technical facts from open questions
Record confirmed values directly in the BOM: dimensions, material grade, hardness, treatment, finish and critical tolerances. Place unresolved requirements in a separate “supplier review” or “open point” column.
For example, write “SKD61 required; equivalent grade not accepted” when the grade is controlled. If an equivalent may be proposed, ask the supplier to name it in the quotation.
3. Identify the features that affect inspection
Do not request a generic “inspection report” without defining the scope. State which dimensions or characteristics are critical and whether the purchasing process needs a basic dimensional record, material certificate, hardness result, origin statement or another specific document.
Inspection scope can affect price and lead time, so it should be visible before quotation approval.
4. Add commercial information once per package
Place common commercial requirements in the RFQ cover note rather than repeating them on every BOM line:
- Quotation currency
- Destination country and postal code
- Required delivery date
- Preferred freight or delivery basis
- Packaging and external marking rules
- Quotation validity or requested response date
If different items have different delivery priorities, add a required-date or priority column to the BOM.
5. Avoid these common BOM problems
- Duplicate part numbers with different descriptions
- Quantities without units such as pieces, sets or packs
- Drawings that do not match the listed revision
- Material or hardness requirements hidden only in email text
- Mixed metric and inch values without a declared unit basis
- Certificates requested after the quotation has already been approved
- Unclear responsibility for freight, import costs or destination charges
Suggested BOM column structure
| Column | Purpose |
|---|---|
| Line | Stable reference for communication |
| Buyer part number | Matches purchasing and drawing records |
| Description | Identifies the component family |
| Drawing / revision | Controls the technical basis |
| Specification | Dimensions, units, material and treatment |
| Critical requirements | Tolerances, fit, finish and inspection |
| Quantity / unit | Commercial quantity basis |
| Required date | Delivery priority |
| Notes | Packaging, certificates or open points |
Prepare and submit the RFQ package
Download the RFQ/BOM CSV template from the Privley Request a Quote page. Enter one product or drawing item per line, then upload the completed file with authorized drawings and reference documents.
For ejector pins, also review the custom ejector pin RFQ guide and the replacement measurement guide.
Submit the secure RFQ form for a written review of standard, replacement or drawing-based mold component requirements.