Custom machined components
CNC Thread Machining
Services
Custom internal and external threads in housings, shafts, adapters, and fittings. Thread milling, turning, and tapping selected around your drawing, material, and batch size.
- Thread milling, turning and CNC tapping
- Metric, UNC, UNF, NPT, BSP and custom specifications
- Complete machined parts for prototypes and small batches
Thread Machining Processes
The machining route is confirmed after reviewing geometry, material, access and quantity.
01
Thread Milling
Internal or external threads where component geometry, tool access and dimensional control suit a milling route.
02
Thread Turning
Threads on rotational components, coordinated with bores, shoulders, sealing faces and other turned features.
03
CNC Tapping
Standard internal threads in housings, plates and brackets, with hole depth and chip clearance considered.
Thread Drawing Requirements
A nominal thread size alone is not enough. Define the thread standard, fit, usable depth and final condition so the part can be quoted and inspected correctly.
Standard and Custom Thread Types
Metric, UNC and UNF
Include the complete designation, pitch and required tolerance class.
NPT, BSPP and BSPT
Identify the exact pipe-thread specification and required acceptance criteria.
Left-hand and custom threads
Provide direction, profile, pitch, starts and dimensional requirements for feasibility review.
01
Thread designation and fit
Specify the governing standard, diameter, pitch or threads per inch, tolerance class, and right- or left-hand direction.
02
Thread length and hole depth
Distinguish usable full-thread length from total hole depth. Show blind holes, reliefs, runout and entry chamfers.
03
Datums and surrounding features
Identify alignment to bores, sealing faces and adjacent diameters, together with wall thickness and access limits.
04
Finish and inspection requirements
State material, coating or treatment, masking, post-finish fit and the required gauging or documentation.
Thread Manufacturing Process
01
Specification review
Check the thread designation, usable length, surrounding geometry and final acceptance requirements.
02
Part & thread machining
Machine the component and select thread milling, turning or tapping to suit the feature.
03
Deburring & finishing
Control burrs, entry features and specified finishing, including masking or coating allowance.
04
Gauging & delivery
Check threads and related dimensions using the agreed inspection plan and documentation.
Thread Machining Materials and Finishes
Specify the material grade and required final condition with your drawing.
| Material group | Options and requirements |
|---|---|
| Aluminum | 6061, 7075 and other specified grades for housings, fittings and lightweight components. |
| Stainless steel | 304, 316, 17-4 PH and drawing-specified grades; review thread geometry and machining access. |
| Carbon & alloy steel | 1045, 4140, 4340 and specified grades for shafts and mechanical components. |
| Titanium, brass & copper | Selected drawing-defined grades, subject to geometry and process review. |
| Engineering plastics | PEEK, POM, nylon and other selected polymers; consider wall thickness and engagement requirements. |
Final condition and fitAnodizing, plating and other coatings can change thread fit. Specify coating thickness, masking and whether acceptance applies before or after finishing.
Thread Inspection and Quality Control
Agree on the inspection scope and acceptance criteria before production.
Internal thread gauging
Thread plug gauges and go/no-go checks as required by the specified thread and acceptance criteria.
External thread gauging
Thread ring gauges or selected pitch-diameter measurements according to the inspection plan.
Thread profile and geometry
Selected optical checks or measurement over wires where appropriate to the specified feature.
Related dimensions and records
Verify bores, faces and datum relationships; agree on first-article reports and documentation before production.
Prototype and Small-Batch Threaded Parts
Prototype threaded parts
Custom housings, connectors and adapters for engineering validation and assembly trials.
Replacement components
Drawing-defined shafts, fittings and sleeves incorporating controlled threaded interfaces.
Repeat small batches
Maintain approved revisions, material specifications and inspection requirements for subsequent orders.
CNC Thread Machining FAQ
Should my part use thread milling or tapping?
Both can produce suitable internal threads. The route depends on thread size, material, hole depth, tool access, quantity and inspection requirements.
Can you machine left-hand and custom threads?
Yes, selected left-hand and drawing-defined threads can be reviewed. Provide the complete designation and profile rather than only a nominal diameter.
Can you machine threads in blind holes?
Yes, subject to access and geometry. Show usable full-thread length separately from total hole depth and allow space for the selected tool.
Can threaded parts be anodized or plated?
Yes. Coating can affect fit, so define masking, thickness and post-finish thread acceptance in the drawing or RFQ.
Do you supply standard catalog screws and bolts?
This service focuses on custom CNC-machined components with threaded features, including shafts, housings, adapters and fittings.
What should I send for a thread machining quote?
Send a CAD model and controlled drawing showing thread specifications, critical dimensions, material, finish, quantity and inspection requirements.
Thread quotation
Request a Custom Thread Quote
Send your drawing and project requirements for machining review and a quotation.