State the quotation validity clearly
Ball screw quotation validity is usually tied to material price, exchange rate, stock status, and machining schedule. Before ordering, confirm the validity still applies rather than arranging payment against an expired offer.
Weeks are the usual unit: most offers are valid in the range of 15–30 days, as stated on the quotation itself. A date is needed because three things move: steel price, exchange rate, and the scheduling slot at the time.
Payment terms drive the production schedule
Payment terms should state the deposit percentage, balance timing, whether payment is due before shipment, whether split payment is accepted, and who bears bank charges. End-machined or custom parts normally start production after payment and drawing confirmation.
This is where the most common disagreement sits: lead time starts from deposit received plus drawing confirmed, not from the enquiry or quotation date. Standard rolled C7 runs about 3–7 days depending on machining volume and difficulty, and a ground part from a drawing about 35–60 days depending on model and quantity. Write that sentence into the order confirmation and the two sides will not disagree later about when the goods ship.
Quantity changes need reconfirmation
If quantity, model mix, or nut quantity changes, unit price, packing, freight, and lead time can all change. Batch orders especially need each model's quantity and delivery lot reconfirmed. For checking the offer line by line, see how to check ball screw quotation items before ordering.
Quantity affects more than unit price: a wider model mix changes the production batch, and more long pieces change the packing and freight structure.
Do not assume freight and lead time stay the same
Freight depends on destination country, packed volume, long-part length, and shipping method. Lead time can be recalculated because of stock, cutting, end machining, an inspection report, or packing requirements.
Order decision table
| Commercial item | What can change | What to reconfirm |
|---|---|---|
| Quotation validity | Date expires or scope changes | Valid price, model, and quantity. |
| Payment terms | Deposit, balance, bank fees | Payment schedule and order release point. |
| Cost inputs | Exchange rate, material price, freight | Whether the quotation needs update. |
| Delivery promise | Lead time, destination, shipment method | When lead time starts and what it includes. |
Confirmation checklist
- Quotation validity date, quotation number, model list, quantity, and changed items.
- Payment terms, deposit percentage, balance timing, bank fee responsibility, and invoice needs.
- Exchange rate, material price, freight, packing, shipment method, and lead time.
- Reconfirmation owner, payment deadline, and whether a new quotation is required.
Send us the quotation version before payment
Send weimute the quotation number, payment terms, quantity changes, freight request, and required lead time before payment. Our manufacturing and sales team will confirm whether the quotation remains valid or needs to be reissued.
FAQ
Does quotation validity only mean price date? No. It also protects scope, quantity, freight, lead time, and payment assumptions. See how to check ball screw quotation items before ordering.
When is reconfirmation necessary? Reconfirmation is necessary when exchange rate, material price, quantity, freight, or delivery target changes.
When does lead time start? From deposit received and drawing confirmed. A day's delay in payment shifts the whole lead time.
Next step
Turn this guide into an RFQ
When the specification direction is clear, send the details below together with quantity, lead time, and packing requirements.
Include these details
- Model, length, quantity, purchase purpose, and target lead time.
- Drawing, sample photos, application parameters, or old-part dimensions.
- Packing, label, inspection, and quotation version to confirm before payment.


