Custom Coupling & Adapter Machining in Stephenville, TX
If a stock coupling or adapter does not fit your setup, Nix Manufacturing, LLC can machine one to your details at our Stephenville, Texas shop. Check our stock products first, then email the thread and dimension details for anything custom.

What We Machine
Couplings
Made to the connection and dimension details you send.
Adapters
Made to join components that stock adapters do not connect.
Matching a sample
Send the part or a clear photo with measurements and we will tell you what we need.
Confirmed With Each Job
Materials, maximum part size, tolerances, quantities and turnaround depend on the job, so we confirm them with you before work starts. We do not publish tolerance figures or guaranteed turnaround times.
What to Email for a Quote
- Email your details to info@nixmfgtx.com.
- We review the job and reply, or call you if we have questions.
- We confirm price and timing with you before work begins.
Prefer to talk first? Call 254 965 4637 during business hours.
Details to include
- Thread details: type and size of each connection
- Dimensions: outside diameter, length and any critical features
- Drawing or photo: of the part, or of what it connects to
- Material: what you need the part made of
- Quantity and requested timing
Please also include your name and a phone number.
Product Photos

Black Nix heavy duty pipe couplings in four sizes, stamped with the Nix name 
Galvanized Nix heavy duty pipe couplings in four sizes
Custom Coupling & Adapter Machining FAQ
Should I check your stock couplings and adapters first?
Yes. Our stock couplings and adapters are listed on the product pages. If none of them fit, email us the details of the part you need.
Can you make a thread I cannot find in stock?
Send the thread type, size and connection details. We will confirm whether we can make it before any work starts.
Do custom parts carry the same specifications as your stock products?
No. Custom parts are made to the details you send, and materials and dimensions are confirmed with each inquiry. Stock product specifications apply only to the stock products.
Other Machining Services
- CNC Lathe Machining
Turned parts made on our CNC lathe, such as couplings, adapters and small components.
- Repair & Replacement Part Machining
Replacement parts for existing equipment, made from a sample, photo or measurements.
- Manual Mill Machining
One-off parts and simple modifications made on our manual mill.
- Machining overview
Looking for a Stock Product?
Our water well products are a separate line with their own specifications. Check them before asking for a custom part.
Send your drawing or call the shop
Email details to info@nixmfgtx.com or call 254 965 4637.
Hours: Monday–Friday, 8 AM–12 PM and 1–5 PM. Closed for lunch 12–1 PM, weekends and major holidays.
