临时页眉。网站做完要换
China's Precision Manufacturing Partner

LOM Metal Machining - Precision CNC Machining Services for Custom Metal & Plastic Parts

Upload your drawings to get reliable CNC milling, turning, and finishing solutions for metal and plastic components. 3-Day Prototyping  ·  On-Demand Manufacturing from 1 to 10,000+ parts.

ISO 9001 · IATF 16949
±0.005mm Tolerance
600+ CNC Units
800+ Global Clients
Get a 4-Hour Quote
No MOQ · NDA Available · DFM Review Included

Response < 4 hrs · 800+ clients served

Our Services

CNC
Machining Services

Two decades of manufacturing excellence -- delivering ±0.005mm precision from prototype to full-scale production.

CNC Milling Service -- multi-axis precision milling at LOM Metal Machining
CNC Milling
3-Axis 4-Axis 5-Axis

CNC Milling Service

From complex 3-axis profiles to demanding 5-axis simultaneous cuts, our 100+ milling units deliver tight-tolerance parts across aluminum, stainless steel, titanium, and engineering plastics. Backed by 80+ DFM engineers, we optimize your design for machinability -- reducing cost without compromising precision.

  • Tolerance capability down to ±0.005mm
  • 100+ units -- Mazak, Brother, and Fanuc-controlled centers
  • Prototypes to 1,000,000+ volume production runs
  • Industries: Aerospace, Medical, Robotics, Optical, Automotive
CNC Turning Service -- Swiss-type precision turning at LOM Metal Machining
CNC Turning
Swiss-Type Ø0.5-32mm

CNC Turning Service

With 350+ Swiss-type turning units from Citizen and Tsugami, we specialize in high-volume, micro-precision turned components down to Ø0.5mm. Ideal for medical, optical, and electronic applications demanding extreme dimensional consistency, our turning department handles everything from simple shafts to complex multi-feature parts in a single setup.

  • Diameter range: Ø0.5mm - 32mm
  • 350+ Swiss-type units -- Citizen, Tsugami precision lathes
  • Ideal for medical, optical and micro-precision components
  • ISO 13485 & IATF 16949 compliant production processes

CNC Machining Services

Precision CNC Solutions

Compact machining options for prototypes, complex parts, and production with ±0.005mm tolerance control.

5-axis CNC machining center producing a complex precision metal component
01

5-Axis CNC Machining

Multi-axis milling for complex geometries, tight features, and precision metal or plastic parts.

  • Complex Geometry
  • ±0.005mm
  • 100+ Units
Swiss CNC turning machine manufacturing small diameter precision components
02

Swiss CNC Machining

High-efficiency Swiss turning for micro shafts, medical parts, connectors, and slender components.

  • 350+ Units
  • Ø0.5-32mm
  • Micro Precision
Precision CNC machined metal parts inspected for dimensional accuracy
03

Precision CNC Machining

Custom CNC manufacturing from prototypes to volume production with DFM review and inspection.

  • ISO 9001
  • IATF 16949
  • ISO 13485
Rapid CNC prototyping process creating a first-article precision metal component
04

Rapid CNC Prototyping

Fast-turn CNC prototypes with engineering DFM feedback to validate form, fit, function, and production readiness.

  • 1-3 Days
  • No MOQ
  • DFM Review

4-hour engineering quote

Custom CNC Machining & Rapid Prototyping Services

LOM METAL MACHINING delivers ±0.005mm precision, ISO-certified quality, and in-house finishing from one-off prototypes to production runs.

Precision CNC machined metal components for custom and prototype manufacturing

From 1 to 1,000,000 pieces

Tolerance Comparison

Standard vs Precision

A compact reference for common CNC machining tolerance levels. Final tolerance depends on material, geometry, feature size, surface finish, and inspection method.

Compact tolerance comparison table for standard CNC machining and precision CNC machining
Feature Standard Precision
Linear ±0.05mm ±0.005mm
Angular ±0.5° ±0.05°
Holes ±0.05mm ±0.005mm
Roughness Ra 3.2μm Ra 0.4μm
ISO Fit IT9-IT11 IT4-IT6

Use this as an early design reference before final DFM review.

View More Details
LOM Metal Machining CNC workshop for tight tolerance metal parts
CNC Workshop-LOM Metal Machining
About LOM Metal Machining

Precision CNC Machining in China Over 20 Years

LOM METAL MACHINING supports CNC projects from DFM review to inspected parts, backed by 20+ years of production experience and scalable capacity in the Greater Bay Area.

20+
Years
600+
Units
±0.005
mm Control

Built for engineers and procurement teams that need stable quality, documented inspection, and clear technical communication.

Need tight tolerance parts? Send us your drawings for review

Manufacturing Advantages

Why Choose
LOM Metal Machining

LOM Metal Machining supports precision CNC machining projects from prototype validation to high-volume production with certified quality control, engineering review, and international delivery support.

01

Tight Tolerance Manufacturing

±0.005 mm

Precision CNC milling, Swiss turning, and multi-axis machining for demanding optical, medical, automotive, aerospace, and semiconductor components.

02

Fast Quotation and Lead Times

4-Hour Quote

Upload 2D drawings, 3D CAD files, material requirements, and quantities for rapid DFM review, transparent pricing, and lead-time planning.

03

ISO-Certified Quality Control

ISO 9001:2015, IATF 16949:2016, ISO 13485, and ISO 14001 quality systems with complete inspection traceability.

IQC IPQC FQC OQC
04

Experienced Engineering Team

80+ DFM engineers help optimize part geometry, tolerance strategy, material selection, surface finishing, and production cost.

  • Prototype-to-production review
  • Material and finishing guidance
05

Global Shipping Support

Greater Bay Area manufacturing with export documentation, packaging, logistics coordination, and customs clearance support.

North America Europe Asia-Pacific
Ready for Review

Start Your CNC Machining RFQ

Send your drawings, CAD files, quantity, material, and target delivery date for a practical manufacturing plan and quote.

Request a Quote
Product Showcase

We produce custom CNC machined components with tight tolerances, consistent quality, and reliable performance for prototypes, low-volume runs, and production orders.

Anodized aluminum mounting plate

Anodized Aluminum Mounting Plate

Copper turned contact pin

Copper Turned Contact Pin

Brass valve body fitting

Brass Valve Body Fitting

Aluminum circular housing base

Aluminum Circular Housing Base

Aluminum flanged support bracket

Aluminum Flanged Support Bracket

Black anodized adapter ring

Black Anodized Adapter Ring

Stainless steel flange hub

Stainless Steel Flange Hub

Aluminum equipment housing

Aluminum Equipment Housing

Stainless steel flange ring

Stainless Steel Flange Ring

Aluminum mounting block

Aluminum Mounting Block

Aluminum instrument housing

Aluminum Instrument Housing

Anodized aluminum sleeves

Anodized Aluminum Sleeves

Need a Similar Part?

Send Us Your Drawings
And Requirements

Our engineering team will review material, tolerance, surface finish, and manufacturability before quoting.

Materials Expertise

CNC Machining
Materials

From precision CNC metals to stable engineering plastics, LOM Metal Machining helps match each material to tolerance, finish, production volume, documentation, and end-use performance requirements.

Anodized Aluminum CNC Parts

Aluminum

Aluminum is a core CNC material at LOM Metal Machining for housings, heat sinks, brackets, optical components, fixtures, robotics parts, and aerospace-grade prototypes. Our team machines common grades such as 6061-T6, 7075-T6, 2024, and 5052 with stable tolerance control, clean edge quality, and in-house anodizing options for functional and cosmetic finishes.

Excellent strength-to-weight ratio
Fast machining for prototypes and production
In-house anodizing support
Ideal for heat sinks, housings, and fixtures
6061-T6 7075-T6 Anodizing Heat Sinks
Drawing Review & Material Guidance

Need Help Choosing the Right Material?

Send your drawing and basic requirements. Our engineers will review manufacturability, material options, tolerances, and surface finishing needs.

STEP, IGES, DWG, PDF, ZIP, and common 3D CAD formats are accepted.

In-House Surface Treatment

Surface Finishing
Built for Production

20+ finishing options with self-owned anodizing and copper blackening lines for tighter lead time control, consistent appearance, and complete quality traceability.

Anodized aluminum CNC machined part with clean corrosion-resistant surface finish

Anodized Aluminum

01

Type II and Type III anodizing for aluminum CNC parts requiring corrosion resistance, stable color, improved surface hardness, and production-ready cosmetic consistency.

Request Anodizing Quote
Black oxide finished CNC machined metal parts with dark low-reflective surface

Black Oxide

02

Controlled black oxide finishing for steel and precision machined metal parts that need reduced glare, dimensional stability, and a uniform technical appearance.

Quote Black Oxide Parts
Stainless steel passivation before and after comparison for CNC machined parts

Stainless Passivation

03

Passivation for 304, 316L, 17-4 PH, and medical-grade stainless components to remove free iron and improve corrosion resistance after precision machining.

Quote Stainless Passivation
24K gold electroplated CNC machined metal part for precision applications

24K Gold Electroplating

04

Gold electroplating for high-value CNC components requiring excellent conductivity, oxidation resistance, solderability, and premium surface performance.

Discuss Gold Plating
Bead blasted colored aluminum tubes with uniform matte CNC surface finish

Bead Blasting

05

Uniform matte blasting for aluminum tubes, housings, and CNC parts to reduce tool marks, refine texture, and prepare surfaces for anodizing or cosmetic inspection.

Specify Bead Blast Finish
Brushed aluminum CNC machined part with directional satin surface finish

Brushed Aluminum

06

Directional brushed finishing for aluminum CNC parts that require a refined satin appearance, controlled grain direction, and consistent visual quality across batches.

Plan Brushed Finish
Need a Specific Finish?

Match the Right Finish to Your CNC Part

Send your drawings, material, tolerance, cosmetic standard, and target application. Our engineering team will recommend the right surface treatment and quote your CNC parts with finishing included.

Machining Process

From CAD File to
Production-Ready Parts

A transparent CNC machining workflow built for engineering teams, procurement managers, and scaling hardware companies -- from rapid prototype validation to stable, documented mass production.

LOM Metal Machining CNC workshop with advanced machining equipment and production lines
50,000+ m² Greater Bay Area Facility

Real Machines.
Controlled Process.

600+ advanced production units, 450+ high-end CNC machines, 350+ Swiss-type turning centers, and 100+ multi-axis milling systems -- supported by in-house finishing and full quality traceability.

600+
Production Units
450+
CNC Machines
±0.005mm
Tolerance Capability
1M+
Volume Capacity
Aluminum CNC Workflow

Precision Manufacturing
Process

A controlled CNC machining workflow for complex aluminum robotic and automation components, ensuring stable accuracy from engineering review to final inspection.

Engineer reviewing CAD drawings and tolerance requirements for aluminum robotic components

DFM Review

Analyze drawings, 3D models, tolerances, and finishing requirements to improve manufacturability before production.

Send Your CAD Drawing
Certified aluminum raw stock prepared for precision CNC machining

Material Preparation

Select certified aluminum materials and inspect raw stock for stable machining performance and surface quality.

Send Your CAD Drawing
Dedicated fixture planning for multi-side CNC aluminum automation parts

Fixture Planning

Develop dedicated fixtures and machining sequences to reduce setup errors and maintain multi-side accuracy.

Send Your CAD Drawing
5-axis CNC machining aluminum robotic component with bores pockets and lightweight cutouts

5-Axis CNC Machining

Machine precision bores, mounting holes, pockets, curved profiles, and lightweight cutouts with 5-axis CNC technology.

Send Your CAD Drawing
Surface finishing and deburring for complex aluminum automation component edges

Surface Finishing

Remove burrs from complex edges and apply bead blasting, anodizing, or other required surface treatments.

Send Your CAD Drawing
Final inspection of CNC aluminum robotic component using precision measuring tools

Final Inspection

Inspect key dimensions, bore accuracy, position tolerance, surface finish, and appearance before shipment.

Send Your CAD Drawing
Engineering Review

CNC Machining Manufacturer
And Precision Parts Supplier

Upload your drawing or 3D model, and our engineering team will review manufacturability, tolerance requirements, and production options.

Upload Your Drawing
Choose Your Production Path

Prototype Fast.
Scale Confidently.

Whether you need one functional prototype or a qualified supplier for high-volume production, LOM supports the full lifecycle with one engineering and quality system.

Rapid CNC prototyping for precision machined metal parts
Rapid Prototyping

Fast DFM-to-Part
Prototype Builds

Validate fit, function, tolerance, and material behavior before committing to tooling or volume orders. Our engineers support CAD review, machining strategy, and finishing selection for practical, production-minded prototypes.

  • 1-piece to low-volume CNC machining with no MOQ restrictions
  • DFM review for tolerance feasibility, cost reduction, and manufacturability
  • Ideal for NPI, design validation, pilot runs, and investor demo hardware
1-Piece Start 80+ DFM Engineers Aluminum · Steel · Titanium
Start Rapid Prototype
High-volume CNC mass production line for precision metal components
Mass Production

Stable Output
For Volume Orders

Scale from approved prototype to 1,000,000+ parts with dedicated machining capacity, in-house finishing, documented inspection plans, and complete traceability for automotive, medical, optical, aerospace, and electronics programs.

  • 450+ high-end CNC machines from Citizen, Tsugami, Mazak, and Brother
  • ISO 9001, IATF 16949, ISO 13485, and PPAP Level 3 support
  • Self-owned anodizing, copper blackening, and 20+ finishing options
1,000,000+ Pieces IQC → IPQC → FQC → OQC Global Logistics
Plan Mass Production
CNC Machining RFQ

Ready to Move Your Project from Sample to Production?

Upload your drawings or project files. Our DFM engineers will review tolerance, materials, finishing, and production feasibility for a practical CNC machining quote.

4hr
Quote Review
80+
DFM Engineers
1M+
Production Scale

Accepted: STEP, IGES, DWG, DXF, PDF, ZIP, images.

Submitting...
Product Inspection

Quality Control
Built Into Every Step

LOM METAL MACHINING applies structured CNC Inspection from material preparation to final shipment. Our quality control process covers dimensional accuracy, material condition, surface roughness, thread quality, and appearance requirements for Precision CNC Machining and tight tolerance machining parts.

±0.01 mm
Tight Tolerance Capability

Depending on part geometry and process.

Ra 0.8 μm
Surface Finish Achievable

On selected machined surfaces.

99.8%+
Outgoing Pass Rate

Based on internal quality records.

12-Step
QC Process Control

From material inspection to final packaging.

Precision inspection equipment used for CNC machined part dimensional quality control
Inspection Equipment

Nine inspection equipment categories support dimensional checks, material verification, surface measurement, thread confirmation, hardness testing, and corrosion resistance validation.

Inspection Stages

Quality Inspection Flow

Controlled orders can include agreed inspection records before packaging and shipment release.

  1. 01
    Incoming Inspection
  2. 02
    First Article
  3. 03
    In-Process Check
  4. 04
    Final Dimension
  5. 05
    Appearance Check
  6. 06
    Surface Finish
  7. 07
    Outgoing Inspection
Quality-Assured Manufacturing

Need Tight Tolerance
Machined Parts?

Send us your drawings and requirements. Our engineering team will review tolerances, material, surface finish, and inspection needs before production.

CNC Machining Applications

Industries
We Serve

We provide precision CNC machining for aerospace, medical device, automotive, electronics, robotics, and industrial equipment applications, from one-off prototypes to production parts.

01

Aerospace Components

CNC machining for aerospace components, including high-strength brackets, housings, valve bodies, titanium parts, aluminum blocks, and mission-critical hardware requiring tight tolerances and reliable traceability.

View Aerospace Parts
02

Automotive Parts

CNC machining automotive components such as BMS housings, sensor parts, chassis hardware, brackets, connectors, and precision turned parts with IATF 16949 production support.

View Automotive Parts
03

Medical Device Components

CNC machining medical parts and medical device components, including surgical tool parts, diagnostic device housings, implant-related components, PEEK parts, and 316L stainless steel precision components under ISO 13485 support.

View Medical Parts
04

Electronics and Robotics

CNC machining for electronics and robotics components, including aluminum enclosures, heat sinks, RF housings, copper contacts, brass pins, precision gears, robotic grippers, and automation housings.

View Electronics Parts
05

Industrial Equipment

CNC machining for industrial equipment parts, including fixtures, shafts, rollers, actuator housings, machine modules, sleeves, bushings, spacers, brackets, and made-to-print mechanical hardware.

View Industrial Parts
06

Custom CNC Parts

Directly customized CNC products made from your drawings, CAD files, or samples. LOM supports prototypes to 1,000,000+ production runs with ±0.005mm tolerance capability, DFM review, in-house finishing, and full quality traceability.

Customize CNC Parts
Product Examples

Custom CNC Machined Parts We Produce

We produce custom CNC machined parts for automotive, aerospace, medical, electronics, robotics, and industrial equipment applications.

View Product Gallery
CNC machined aluminum housing made from AL6061-T6

Aluminum Housing - AL6061-T6

CNC machined stainless steel ball joint made from Stainless Steel 316L

Stainless Steel Ball Joint - Stainless Steel 316L

CNC machined stainless steel valve body made from Stainless Steel 304

Stainless Steel Valve Body - Stainless Steel 304

CNC turned stainless steel shaft made from Stainless Steel 316

Stainless Steel Shaft - Stainless Steel 316

CNC machined aluminum standoff made from AL6061

Aluminum Standoff - AL6061

CNC turned stainless steel pin made from Stainless Steel 316

Stainless Steel Pin - Stainless Steel 316

CNC machined POM spacer made from POM

POM Spacer - POM

CNC machined aluminum bracket made from Aluminum 6061

Aluminum Bracket - Aluminum 6061

CNC machined aluminum block with blue anodizing

Aluminum Block - Anodizing Blue

CNC machined brass connector made from Brass C360

Brass Connector - Brass C360

CNC machined copper terminal made from C110 Copper

Copper Terminal - C110 Copper

CNC machined titanium components made from Ti-6Al-4V

Titanium Components - Ti-6Al-4V

Custom CNC Machining Support

Looking for Custom CNC Parts For Your Industry?

Share your drawings, samples, or project requirements to request a CNC machining quote for aerospace components, automotive parts, medical device components, electronics, robotics, or industrial equipment.

Customer Testimonials

Trusted by
Global Teams

Procurement leaders, engineers, and founders rely on LOM Metal Machining for precision CNC parts, clear communication, and scalable production support.

Customer avatar representing a CEO

Michael Reynolds

CEO · Robotics Startup

"LOM Metal Machining helped us move from prototype builds to repeat production without changing suppliers. Their DFM feedback reduced rework and gave our team confidence before launch."
Customer avatar representing a mechanical engineer

James Anderson

R&D Engineer · Medical Devices

"Their engineers understood the tolerance stack-up and material requirements quickly. We received practical machining recommendations, inspection reports, and stable quality across multiple batches."
Customer avatar representing a female purchasing manager

Sarah Mitchell

Procurement Manager · Automotive

"LOM Metal Machining gives our purchasing team fast quotes, reliable documentation, and consistent delivery updates. Their IATF 16949 support makes supplier qualification much easier."
Request a Quote

Send Files.
Get a Quote.

Upload CAD/drawings with quantity and material notes. Our engineers will review and respond with practical next steps.

Upload Files
Uploading your RFQ files...

NDA support available. Files are used only for quotation review.

FAQ

Frequently Asked Questions
About CNC Machining

Clear answers for engineers, sourcing teams, and buyers evaluating precision CNC machining suppliers.

What Is CNC Machining?

CNC machining is a subtractive manufacturing process that uses computer-controlled cutting tools to remove material from metal or plastic stock. It is used to produce precise custom parts through processes such as CNC milling, CNC turning, Swiss machining, EDM, and related finishing operations.

What Tolerances Can You Achieve?

LOM Metal Machining can achieve precision tolerances down to ±0.005 mm depending on the material, geometry, wall thickness, feature size, and machining process. For critical dimensions, please provide a 2D drawing with tolerance requirements so our engineering team can review manufacturability before quoting.

What Materials Can You Machine?

We machine aluminum alloys such as 6061-T6, 7075-T6, 2024, and 5052; stainless steels such as 304, 316L, 17-4 PH, and 416; specialty metals including titanium, brass, copper, and Inconel; and engineering plastics such as PEEK, POM, PC, nylon, PTFE, and Ultem.

What Is Your Typical Lead Time?

Typical lead time depends on part complexity, material availability, surface finish, inspection requirements, and order quantity. Simple prototypes can often be produced quickly, while production orders require scheduling for machining, finishing, inspection, and logistics. Our team provides a lead time estimate with each quote after reviewing your files.

Do You Support Low-Volume Manufacturing?

Yes. We support one-piece prototypes, low-volume manufacturing, pilot runs, and repeat production orders. This helps customers validate design, test fit and function, complete engineering verification, and scale from prototype to mass production with the same manufacturing partner.

Can You Sign an NDA?

Yes. We can sign a mutual or customer-provided NDA before reviewing drawings, CAD files, product specifications, or confidential project details. We regularly support hardware startups, medical device companies, automotive suppliers, and engineering teams that require strict confidentiality.

Do You Provide Surface Finishing?

Yes. We provide 20+ surface finishing options, including Type II and Type III anodizing, bead blasting, powder coating, passivation, polishing, black oxide, plating, and copper blackening. Our in-house anodizing and copper blackening capabilities help reduce outsourcing delays and improve quality control.

What File Formats Do You Accept?

We commonly accept STEP, STP, IGES, X_T, SLDPRT, STL, PDF, DWG, and DXF files. For the most accurate quote, please include 3D CAD files, 2D drawings, material requirements, surface finish, quantity, tolerance notes, and any inspection or documentation requirements.

LOM Advantages

Why Buyers Choose LOM Metal Machining

600+ Units

450+ CNC machines.

±0.005 mm

CMM inspection.

Certified

ISO / IATF quality.

Real Projects

CNC Machining
Case Studies

Explore how we help customers from different industries manufacture precision CNC machined parts with reliable quality, tight tolerance, and stable delivery.

3D printed functional metal and polymer prototype parts for engineering validation

Precision CNC Machined Aluminum Enclosure

CNC milled aluminum enclosure for electronic equipment, featuring a deep internal pocket, precision mounting holes, clean chamfers, and a smooth burr-free surface for reliable assembly.

Deep pocket deformation control
Accurate mounting hole positions
Burr-free anodized-ready finish
Material / Process

6061-T6 aluminum · CNC milling, pocket milling, drilling, tapping, chamfering, deburring, dimensional inspection, surface finishing.

View Case Study
Custom CNC turned stainless steel shaft components for automation machinery

Stainless Steel Shaft Components

For an automation equipment customer, we machined stainless steel shafts with tight diameter control, smooth finishes, and stable concentricity to support reliable assembly and consistent batch production.

Accurate outer diameter control
Stable concentricity
Smooth surface finish
Reliable assembly quality
Material / Process

Stainless Steel 304 / 316 · CNC turning, grooving, threading, polishing, and in-process inspection.

View Case Study
Precision CNC machined aluminum electronic product housing with anodized finish

5-Axis CNC Machined Aluminum Robotic Bracket

A complex aluminum structural part with precision bores, multi-side holes, curved profiles, and lightweight cutouts, produced by 5-axis machining for stable, repeatable accuracy.

Precision bore and concentricity control
Multi-side holes machined with reduced setup error
Complex pockets and lightweight cutouts
Clean deburring for robotic assembly performance
Material / Process

Material: Aluminum 7075-T6 · Process: 5-Axis CNC Machining, Boring, Drilling, Tapping, Pocket Milling, Chamfering, Deburring, CMM Inspection.

View Case Study
Precision Machining Cases

Need Custom CNC Machined Parts?

Explore more precision machining cases or send us your drawings to discuss your custom project.

Your Manufacturing Partner

Ready to
Build
Real Parts?

From a single prototype to one million units -- our 80+ DFM engineers are ready to review your design and return a detailed quote within 4 business hours. No MOQ. No delays. Real precision.

ISO 9001 · IATF 16949
ISO 13485 Certified
No MOQ Restrictions
Quote Speed
4hr
Engineering quote with DFM review from 80+ engineers
Tolerance
±0.005mm
CMM-verified precision on every production order
Why LOM?
  • 600+ Production Units
    Including 450+ CNC from Mazak, Citizen & Tsugami
  • In-House Surface Finishing
    20+ options including self-owned anodizing lines
  • 1 to 1,000,000+ Pieces
    Seamless scale from NPI prototyping to mass production
  • End-to-End Logistics
    10+ years international shipping with customs clearance
Talk to an Engineer
info@lommetalmachining.com
Greater Bay Area, China
50,000+ sqm Facility