Minimum order quantity in machining, and why it is really a value
September 22, 2026
Most suppliers will happily quote you ten pieces. Whether ten pieces is a sensible thing to buy is a different question, and it is worth answering before you are surprised by the unit price.
Minimums are a value, not a count
Four costs do not care how many parts you ordered:
- Programming the part, once
- Fixturing, whether soft jaws or a plate
- First article inspection and the report
- Freight, packing and bank charges on the shipment
Divide those across five pieces and they dominate. Divide them across five hundred and they disappear. That is the whole of the minimum order question, and it is why a quote for ten pieces can be nearly the same total as a quote for fifty.
Where the floor actually sits
There is no universal number, but there is a useful test. Add up everything you will spend on the order, including your own admin time and the freight, then ask whether the saving over your current supplier survives it. On a small order it usually does not, and honest suppliers say so.
Our position is simple: if the order is too small to be worth it for you, we tell you before you place it rather than taking it and letting you work it out from the invoice.
Five ways to make a small order sensible
1. Group parts into one order. Five different parts in one shipment share the freight, the paperwork and the bank charge. Five separate orders do not.
2. Bring the next order forward. Ask for the price at your quantity and at two or three times it. If the gap is large, the setup is dominating and ordering more now is cheaper per piece than ordering again in four months.
3. Stay on stocked material. Small orders of an imported grade are the worst combination: high minimum from the mill, long wait, high price.
4. Avoid subcontracted finishing where the part does not need it. A finisher’s minimum batch charge on thirty pieces is painful. As machined and deburred is free.
5. Treat the first order as an investment in the second. The programming and fixture exist afterwards. A second order against them is where this route pays.
When a small order is genuinely right
- A true prototype, where speed and accuracy matter and unit price does not
- A first article before a production release, which is money well spent
- A spare part for a machine that is down, where the alternative is a longer outage
- A test of a new supplier, deliberately small, before a real order
In all four the point is information rather than economics, and paying a high unit price for it is rational.
What to ask for in the request
Put these two lines in and the answer comes back useful:
Please quote 25, 100 and 250 pieces, with one-off costs listed separately. If this order is too small to be economic once freight is counted, please say so.
The first line shows you the shape of the cost curve. The second gives an honest supplier permission to be honest, and tells you a lot about the one who ignores it.
The mechanics behind the curve are in how quantity changes the price and what drives the price of a machined part.
The arithmetic, with numbers
Take a part with 600 dollars of one-off costs, 4 dollars of material and machine time per piece, and 250 dollars of freight and handling on the shipment.
| Quantity | One-off per piece | Variable | Freight per piece | Total per piece |
|---|---|---|---|---|
| 10 | 60.00 | 4.00 | 25.00 | 89.00 |
| 50 | 12.00 | 4.00 | 5.00 | 21.00 |
| 250 | 2.40 | 4.00 | 1.00 | 7.40 |
| 1,000 | 0.60 | 4.00 | 0.25 | 4.85 |
The figures are illustrative rather than a price list, and the shape is what matters. Between 10 and 50 the unit price falls by three quarters. Between 250 and 1,000 it barely moves. Almost all of the benefit of ordering more is captured well before the quantities most buyers imagine.
That table also explains why a supplier quoting a small order looks expensive and is not necessarily being unreasonable.
A practical rule
If the one-off costs are more than about a third of your total order value, you are buying setup rather than parts. Either increase the quantity, group the order with other parts, or accept that this particular order is an information purchase and price it in your own head accordingly.
Not sure whether your order is above the line? Send it and ask directly: get a quote.
Questions we get on this
Is there a minimum order quantity for CNC machining?
Rarely a piece count, almost always an effective value. Setup, programming, inspection and freight do not scale down, so a five piece order and a fifty piece order can cost nearly the same to produce and ship.
Can I order a single prototype part?
Technically yes, and the unit price will look alarming because every fixed cost lands on one piece. That is normal and it is not a sign of a bad supplier. Judge the prototype on speed and accuracy, and judge the supplier on the production price.
How do I make a small order worth running?
Group parts into one order and one shipment, keep the material to something stocked, avoid subcontracted finishing, and ask for the price at a higher quantity so you can decide whether to bring the next order forward.
Have a part like this?
Send the drawing. We shortlist the shop we place it with that run the process and material, and answer within 24 business hours.
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