Spex is a precision machine shop that manufactures high-volume precision parts. We machine custom internal and external threaded parts that meet your exact specifications with consistent quality and reliable delivery.
We use a variety of machining processes to manufacture custom precision parts with internal and external threads.
• Fittings & Connectors (e.g., hydraulic fittings, pneumatic connectors)
• Custom Fasteners (e.g., specialized bolts, screws, nuts)
• Standoffs & Spacers with integrated threads
• Shafts & Rods with internal or external threads
• Specialty Adapters & Bushings
• Valve Components & Plugs
If your part isn't listed, contact us to discuss your unique requirements.
Spex is equipped to be your comprehensive machining partner. Our manufacturing capabilities and just-in-time inventory management solutions are built to scale with your needs.
• CNC Turning: Ideal for external and internal threads on cylindrical parts, ensuring tight diameter and pitch control.
• Swiss Screw Machining: Perfect for intricate, small-diameter threaded parts with high precision and efficiency.
• Multi-Spindle Machining: Delivers high-volume threaded components with consistent quality and competitive pricing.
• CNC Milling: For milling unique thread forms or integrating threads into complex, non-cylindrical geometries.
Learn more about our manufacturing capabilities.
Spex is equipped to be your comprehensive machining partner. In addition to our machining, we offer secondary processes like plating, engraving, anodizing, and heat treating. Our manufacturing capabilities and just-in-time inventory management solutions are built to scale with your needs.
Selecting the right material is crucial for the performance and durability of your custom threaded parts. Our team has extensive experience machining a diverse array of materials, ensuring optimal machinability and dimensional accuracy
• Stainless Steels: 303, 304, 316, 416 (for corrosion resistance and strength)
• Aluminum Alloys: 6061, 7075 (for lightweight strength and machinability)
• Brass & Bronze: (for excellent machinability, conductivity, and corrosion resistance)
• Carbon & Alloy Steels: 1018, 4140 (for high strength and wear resistance)
View all the materials we use for machined parts.
Our quality control team inspects parts throughout the production process to ensure they meet customer specifications. Our ISO 9001:2015 certified quality system maintains consistent standards from first article to production runs. Documentation includes material traceability, inspection reports, and First Article Inspection Reports (FAIR) based on customer requirements.
If you have a question about our secondary manufacturing services, or want to request a quote, reach out to our team by filling out the form or email sales@spex1.com.
We'd love to hear from you!
Scalable production
Short lead times
Fair prices
ISO-9001 certified
Secondary processes
Range of materials
On-time delivery
75+ years in business
Advanced CNC machining
Rapid prototyping
Exact tolerances depend on the material, machining process, and part dimensions. Spex consistently holds exceptionally tight tolerances on custom threaded parts. Most parts can be consistently held within ∓0.001 inches.
Quality and accuracy are fundamental at Spex. Our ISO:9001:2015 certified quality management system guides every step. We use detailed inspection processes and advanced measurement equipment to verify thread pitch, diameter, lead, and form, guaranteeing parts meet precise specifications.
Yes, we can produce custom threaded parts with various specific surface finishes and manage coating requirements. We partner with trusted providers for processes like anodizing, plating, and passivation, ensuring your components meet all functional and cosmetic specifications.
To provide an accurate quote, please provide detailed engineering drawings (including dimensions, tolerances, and thread specifications), the required material type, and the estimated order quantity. This information helps us streamline the quoting process.
