Spex is a U.S. based precision machine shop that manufactures high-volume precision parts. We machine custom fittings and connectors that meet your exact specifications with consistent quality and reliable delivery.
We use a variety of machining processes to manufacture custom precision parts with tight tolerances and unique features.
We manufacture parts for power generation, hydraulics, HVAC, and measurement applications. When we talk about custom fittings and connectors, we're referring to machined parts designed to integrate seamlessly into your unique assembly. Unlike off-the-shelf components, these are engineered to meet exact specifications for your application, whether it involves fluid transfer, secure structural connections, or specific electrical housing requirements.
• Precision Fluid & Gas Fittings: (e.g., hydraulic fittings, pneumatic connectors, pipe fittings, tube fittings) – components designed to securely join and manage the flow of liquids or gases.
• Specialized Adapters & Couplings: Parts that bridge the connection between different sizes, types, or systems, ensuring compatibility and secure interfaces.
• Manifold Blocks & Housings: Complex components that integrate multiple connection points or precisely route media within a compact structure.
• Custom Sensor & Instrumentation Connectors: Precision-machined housings and interfaces designed for reliable integration of sensors, gauges, and other critical measurement devices.
• Valve Components & Plugs: Internal and external parts for valves that control flow, providing tight seals and durable connections.
• Structural & Electrical Connectors: Custom-machined elements that provide secure mechanical or electrical attachment points within an assembly.
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 Milling: For machining complex geometries, manifold blocks, and specialized connector housings that require intricate features, precise angles, or integrated pathways.
CNC Turning: Ideal for creating the intricate external and internal features of cylindrical fittings, ensuring tight diameter and concentricity for secure connections and optimal flow.
Swiss Machining: Perfect for producing small-diameter, complex connectors and miniature fittings with exceptional precision and efficiency, often required for instrumentation and electronics.
Multi-Spindle Machining: Delivers high-volume runs of consistent, cost-effective fittings and connectors, ensuring seamless supply for your production needs.
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 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 fittings and connectors. 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 provide 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.
