Precision Parts Crafted by Screw Machines
At Specialty Engine Components, our advanced screw machines are the backbone of our ability to produce high-precision, high-volume parts for the automotive industry and
beyond. As an IATF 16949-certified machine shop, we leverage this technology to deliver components that meet the tightest tolerances and most demanding specifications. Screw machines excel at creating small to medium-sized parts with exceptional consistency, making them a cornerstone of our manufacturing capabilities. Here’s an overview of the types of parts we craft using this versatile equipment.
What Are Screw Machine Parts?
Screw machines are designed to produce intricate parts from metal or plastic rods (bar stock). These machines rotate the material while cutting tools shape it, often completing multiple operations (turning, drilling, threading) in a single setup. The result? Efficient production of complex, cylindrical components with minimal waste and maximum precision.
Common Parts We Manufacture
Our screw machines churn out a wide range of components, each tailored to your exact needs:
- Transmission Spool Valves Spool valves in transmissions are typically small, elongated components with multiple diameters, grooves, and precisely machined surfaces. They slide within a valve body bore to direct fluid through ports, requiring exceptional dimensional accuracy and surface finish to ensure smooth operation and minimal leakage. Screw machines excel at producing these parts efficiently, especially in high volumes for automotive applications. Bushings and sleeves: These cylindrical components guide or support moving parts within the valve. Screw machines produce them with tight tolerances for inner and outer diameters, often from durable materials like bronze or stainless steel.
- Nozzles and connectors: For valves requiring precise fluid delivery, such as in spray or metering applications, screw machines manufacture nozzles and threaded connectors with accurate orifices and fittings. Pins and plugs: Small components like retaining pins or sealing plugs, which may be threaded or press-fit, are churned out quickly on screw machines due to their simple yet precise shapes.
- Adapters and Couplings: Threaded fittings, such as adapters or couplings that connect valves to piping systems, are frequently produced on screw machines, leveraging their ability to cut reliable threads in various metals. Bushings and Spacers: These small but critical parts maintain alignment or spacing in engines and machinery. Our screw machines craft them with precise inner and outer diameters.
- Shafts and Pins: From dowel pins to custom drive shafts, we create smooth, durable components that transmit motion or secure parts in place.
- Fittings and Connectors: Hydraulic fittings, valve stems, and hose connectors are made with leak-proof precision, ideal for fluid or gas systems.
- Terminals and Contacts: Used in electrical systems, these parts demand tight tolerances and consistent finishes—qualities our screw machines deliver every time.
- Custom Components: Have a unique design? We specialize in bespoke parts, like threaded inserts or specialty engine components, built to your drawings.
Materials and Finishes
We work with a variety of materials to suit your application, including steel, stainless steel, aluminum, brass, and high-performance plastics. Screw machine parts can be finished to your specifications—think polished surfaces, anodizing, or heat treatment—ensuring they perform in even the harshest conditions.
Why Screw Machines?
Screw machines shine in high-volume production, delivering repeatability and speed without sacrificing quality. Their multi-axis capabilities allow us to tackle complex
geometries while automated bar feeders keep production humming. This efficiency translates to cost savings for you, especially on large runs. Plus, our adherence to IATF
16949 standards means every part undergoes rigorous quality checks, from raw material to final inspection.
Applications
The parts we produce power automotive engines, transmissions, braking systems, and more. Beyond cars, they’re found in aerospace, medical devices, HVAC, maritime,
agricultural, and industrial equipment—anywhere precision and durability matter.
At Specialty Engine Components, our screw machines turn raw materials into reliable solutions. Ready to see what we can craft for you? Submit an RFQ today, and let’s bring your project to life with unmatched quality and precision.