CNC Turned Parts & Custom Fasteners
CNC Turned Parts & Custom Fasteners – Precision Engineered in the UK
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Bespoke Manufacturing
Instant Quote Service
Worldwide Delivery
Various Gauges/Thicknesses
Bespoke Manufacturing
Instant Quote Service
Worldwide Delivery
Various Gauges/Thicknesses
Turning Division Overview
Our dedicated turning division is equipped with advanced CNC lathes, including both sliding head and fixed head machines. This allows us to machine parts efficiently across a broad range of sizes and complexities.
From simple spacer rings to intricate undercuts or threaded features, our CNC turning capabilities allow us to support:
- Prototypes and development parts.
- Batch runs and production volumes.
- Fast-turnaround specials and modified stock items.
CNC Turning Capabilities
Our CNC lathes are configured to support the production of parts from a few millimetres in diameter up to over 200mm, depending on complexity and material.
Equipment Features:
- Sliding head lathes: Ideal for small diameter, high-precision, multi-feature parts.
- Fixed head lathes: Best for larger diameters, complex geometries, or short-length work.
- Multi-axis machining for reduced setups.
- Live tooling for secondary operations.
- Tight tolerances: typically ±0.02mm or better.
Custom Washers When Pressing Isn’t Suitable
While we are experts in pressed washers, not every washer can or should be made via stamping. For small batches, tight tolerances, or materials prone to deformation, CNC turning is often the best solution.
We machine custom washers from metals and plastics when:
- Hole size and thickness tolerances must be tightly controlled.
- Exotic materials like PEEK, PTFE, acetal, or nylon are required.
- Surface finish is critical for sealing or electrical applications.
- Very thin, thick, or stepped profiles are needed.
- Press tooling costs are not viable for short runs.
Our CNC washer service supports quick-turn prototyping and production in a way that is scalable and precise.
Materials We Work With
We machine both metals and engineering plastics, giving customers full flexibility in material choice. Common materials include:
Metals
- Stainless steel (303, 304, 316).
- Aluminium (6082, 7075).
- Brass and bronze.
- Mild steel.
- Titanium and Inconel (on request).
Technical Plastics
- PEEK
- Nylon
- Acetal (Delrin)
- PTFE
- UHMW-PE
We can machine from bar stock or cut blanks, and we also accept free-issue materials when needed.
Reworked and Modified Fasteners
Off-the-shelf fasteners don’t always match real-world needs. That’s why Stephens Gaskets offers a custom fastener reworking service, ideal for engineers needing immediate solutions without high tooling costs or long delays.
We take standard fasteners and modify them into non-standard, application-specific parts by:
- Turning down or extending shafts.
- Shortening bolts or threaded rods.
- Adding through-holes or cross-holes.
- Altering head profiles.
- Thread chasing and re-cutting.
This capability is particularly useful for:
- Prototype assembly.
- Equipment repair and MRO (maintenance, repair and operations).
- Assembly jigs and fixtures.
- Aerospace, motorsport, and marine where sourcing lead times are critical.
As a custom fastener manufacturer, we deliver solutions where catalogue parts fall short.
Typical Components We Produce
As a bespoke turned components specialist, Stephens Gaskets manufactures a wide variety of parts, including:
- Precision washers and shims.
- Custom spacers and collars.
- Bushes and bearing sleeves.
- Threaded inserts and adaptors.
- Special screws and dowels.
- Modified bolts and fasteners.
Whatever your design or requirement, we have the experience and equipment to bring your drawing to life.
Who We Serve
Our CNC turned parts and custom fasteners are used by customers in:
- Automotive: From prototype builds to critical spacers for performance parts.
- Medical: Custom fixings and washers in engineering plastics.
- Electronics: Lightweight insulators, sleeves, and precision machined spacers.
- Aerospace: Flight-certified specials, support fixtures, and reworked fasteners.
- Instrumentation: Precision bushings, mounts, and seals for testing equipment.
- Marine & Defence: Corrosion-resistant fixings and bespoke turnings for harsh environments.
We work with SMEs and large manufacturers alike, offering consistent quality, fast lead times, and reliable service.
Our Production Process
Here’s What to Expect:
Why Choose Stephens Gaskets?
- Over 70 years of engineering experience.
- In-house CNC turning with sliding and fixed head lathes.
- ISO 9001:2015-certified quality management.
- No minimum order quantity.
- Expert support from quote to delivery.
As a trusted CNC turned parts supplier, we understand the need for quality, responsiveness, and technical capability.
FAQs – CNC Turned Parts & Fasteners
What’s the smallest quantity you can produce?
How long does a typical job take?
Can you modify parts I supply?
Do you offer surface finishing?
Can you engrave or serial mark turned parts?
Final Thoughts
Stephens Gaskets is your trusted UK partner for CNC turned parts and custom fasteners. We specialise in the components others can’t easily supply – tight tolerances, specialist materials, short runs, or modified standards.
Whether you’re creating something new or adapting something old, we’ll help you do it faster, better, and more accurately.
Get a Quote or Speak with a Specialist
Our responsive team is ready to help with design advice, quick quotes, and exceptional service.