Bar stock mainly risks rust and bending
Ball screw bars are usually long. If support is poor, humidity is high, or packing is damaged, rust, bending, or surface damage can occur. Distributor stock should treat rust prevention and support as basic requirements.
Labels prevent model mix-ups
Models such as 1605, 1610, 2005, and 2510 can look similar. Without clear labels, warehouses and customers can mix them up. Keep model, length, nut quantity, and batch on packing and records.
Storage affects later machining
If the bar will later be cut or end machined, straightness and surface condition matter. Long-term stock should avoid side pressure, unsupported spans, and humid environments.
- Confirm anti-rust oil, bag, or other protection.
- Support long bars horizontally and avoid local hanging.
- Record model, length, nut, and batch on labels.
- Use FIFO management to reduce long storage time.
Typical buyer situations
This topic usually appears in distributor stocking, repair replacement, machine retrofit, automation projects, and drawing-based purchasing. If a buyer sends only one model number, the supplier cannot judge the real use, packing risk, or whether machining upgrades are needed.
Details to confirm before quotation
To reduce repeated questions, the RFQ should cover product specification, use case, and delivery expectations together. The following points can be copied into the RFQ form or email.
- Purchase purpose: distributor stock, repair replacement, machine project, or sample testing.
- Specification: diameter, lead, overall length, thread length, nut type, and quantity.
- Machining: cut-to-length, end machining, and whether BK/BF, FK/FF, EK/EF, or other supports must be matched.
- Delivery: target quantity, expected lead time, packing, labels, shipping method, and whether shipment photos are required.
Common mistakes
A common mistake is asking only for unit price without application, quantity, or packing details. Another is sending photos without dimensions. This turns quotation into guesswork and can create errors in end machining, nut matching, or long-part shipping.
Next step
If the specification is clear, submit an RFQ directly. If the model or accuracy grade is still uncertain, describe the machine use and old part details so the supplier can recommend a standard part, bar stock, cut-to-length, or end machining route.


