Flange
Stainless Steel 304/304L · As machined
- Ø100 mm × 15 mm, Ø42 mm center bore
- CNC turned · 4 × Ø14 mm holes on a 75 mm bolt circle
1 pc
$104.60
USD / pc
25 pcs
$45.50
USD / pc
-56.50%100 pcs
$37.71
USD / pc
-63.95%CNC turning and milling · From 1 part
Stainless Steel
Machining
Custom stainless steel parts in 303, 304, 316, 416 and 420: flanges, plugs, couplings, shafts, bushings and adapters. Upload your file and see your price from one part.
Hex plug
Stainless 304 · ½" NPT male, 1" hex
1 pc
$27.67 USD
per part
25 pcs
$10.79 USD
per part
-61%100 pcs
$8.01 USD
per part
-71%What we machine in stainless
Stainless grades we machine
Stainless Steel 303
The easiest to machine: parts with lots of turning, threads and holes, like adapters, screws and fittings.
Learn more
Stainless Steel 304/304L
The general-purpose one: resists corrosion from water and air. Flanges, couplings, plugs and food-equipment parts.
Learn more
Stainless Steel 316/316L
More corrosion resistant than 304: salt water, chemicals, and medical or pharmaceutical equipment.
Learn more
Stainless Steel 416
Free-machining martensitic: shafts, screws and parts that are hardened for more strength.
Learn more
Stainless Steel 420
Hardens for wear resistance: parts that see wear, guides, shafts and tooling.
Learn moreTypical parts
What we’re asked for most in stainless
Shafts
With steps, keyways and threads, to fit your assembly.
Quote one like this
Bushings
Plain, flanged or stepped, in 304 or 316 for corrosive environments.
Quote one like this
Custom screws
Sizes and heads you can’t buy off the shelf, with the thread your drawing calls for.
Quote one like this
Adapters
From one thread to another, NPT, metric or inch, to join what doesn’t come off the shelf.
Quote one like thisPrice examples
How the price changes with quantity
Stainless steel parts quoted with the same pricing model as the portal: setup is spread across more parts, so the price per part drops.
Already have your part? Quote it online
Pipe Plug
Stainless Steel 316/316L · As machined
- ⅛" NPT male, ½" hex head
- CNC turned · 20 mm long
1 pc
$25.40
USD / pc
25 pcs
$10.15
USD / pc
-60.04%100 pcs
$6.85
USD / pc
-73.03%
Coupling
Stainless Steel 304/304L · As machined
- ½" NPT female on both ends
- CNC turned · Ø28 mm × 38 mm
1 pc
$39.90
USD / pc
25 pcs
$16.16
USD / pc
-59.50%100 pcs
$12.38
USD / pc
-68.97%
Reference amounts in USD per part (excluding shipping and tax). Final pricing depends on geometry, tolerances, finishes and material availability.
Which stainless grade?
If your part has many threads and won’t see harsh environments, 303 is cheaper to machine. For general use and food contact, 304. For salt water or chemicals, 316. If it needs hardness, 416 or 420. Upload your file and we’ll help you choose.
Upload my fileMaterials
Stainless grades we offer
The same ones you pick in the portal when configuring your part.
Stainless steel
Stainless Steel 303
The easiest to machine: parts with lots of turning, threads and holes, like adapters, screws and fittings.
Stainless Steel 304/304L
The general-purpose one: resists corrosion from water and air. Flanges, couplings, plugs and food-equipment parts.
Stainless Steel 316/316L
More corrosion resistant than 304: salt water, chemicals, and medical or pharmaceutical equipment.
Stainless Steel 416
Free-machining martensitic: shafts, screws and parts that are hardened for more strength.
Stainless Steel 420
Hardens for wear resistance: parts that see wear, guides, shafts and tooling.
Why PREMSA
Your stainless parts, from one-off spares to production
We help you choose the grade, make parts from one piece and check every lot before it ships.
From 1 part
No minimum quantity: a replacement part, a prototype or a production run, with quantity pricing in the quote.
Certified material
Stainless steel from Monterrey suppliers, with material certificates on request.
Inspection and reports
Dimensional report, FAI and certificates on request, so your quality team can release without re-measuring.
Shipping to 52 countries
From Monterrey to all of Mexico and 52 countries, with duties estimated before you pay.
To design your part
Machining guides
FAQ
About stainless steel machining
- Which stainless steels do you machine?
- 303, 304/304L, 316/316L, 416 and 420. You pick them in the portal when configuring your part.
- What’s the difference between 304 and 316 stainless?
- 316 contains molybdenum, which makes it more corrosion resistant: it’s the right choice for salt water, chemicals and medical or pharmaceutical equipment. 304 is the general-purpose grade and costs less. If you’re not sure, upload it and we’ll help you choose.
- Do you make custom flanges, pipe plugs and couplings?
- Yes: flanges, plugs, couplings, nipples and adapters with NPT, metric or inch threads, made to your drawing or the ones you can’t find off the shelf. Also shafts, bushings, custom screws and any stainless part that can be turned or milled.
- Why does a stainless part cost more than a carbon steel one?
- Because of the material and the machining: stainless costs several times more per kilo and work-hardens as it’s cut, so it’s cut slower and wears more tooling. 303 takes the least machine time.
- What tolerances can you hold in stainless?
- By default, ISO 2768-m general tolerances apply. On dimensions you call out on your drawing we can hold ±0.025 mm, and critical dimensions are checked in inspection.
- Can I order a single part?
- Yes. There’s no minimum: you quote from one part, and the quote shows how the price per part drops with quantity.
- Do I get a material certificate?
- Yes, on request. When configuring your part, check that you need a material certificate and traceability, and it ships with your order.
Custom stainless steel parts, CNC machined
Stainless steel is used where a part can’t rust: in contact with water, food, chemicals or outdoors. That’s why it’s machined into flanges, pipe plugs, couplings, threaded fittings, shafts, bushings and parts for food, medical and process equipment.
303 contains sulfur so the chip breaks: it’s the easiest to machine and the right choice for parts with many threads. 304/304L is the general-purpose grade and 316/316L holds up better to salt water and chemicals. 416 and 420 are martensitic: they can be hardened for shafts, screws and wear parts. The difference between 304 and 316 is the molybdenum in 316, which makes it more corrosion resistant.
Stainless steel turning is the most common —flanges, plugs, couplings, shafts and bushings come from round or hex bar— and milling makes plates, brackets and prismatic parts. Stainless work-hardens as it’s cut, so we use tooling and feeds made for stainless, and NPT and metric threads come out to your drawing.
To order your stainless steel parts, upload your STEP or PDF drawing to the portal, choose the grade and quantity, and order from one part.
Engineering tools
To choose the grade, fits and threads
Free datasheets and charts before you quote.
Got a part in mind?
Upload it and we’ll make it real. One part or a thousand.