SR Machining

What SR Machining does

SR Machining is a privately held precision CNC machining services company headquartered at 640 Parkridge Avenue, Norco, California. Founded around 2003–2004, the firm operates a 40+ machine in-house fleet comprising 21 CNC lathes, 17 CNC milling machines (including 4-axis and 5-axis), and 5 Citizen Swiss screw machines, supported by an in-house temperature-controlled metrology lab with optical comparators, Helmel CMMs, and Keyence laser measurement systems. Quality is governed by ABS-certified AS9100 and ISO 9001:2015 management systems, qualifying the shop for aerospace, medical, and industrial OEM work requiring full traceability.

The company offers turning, milling, and Swiss machining of engineered plastics and metals (including aluminum, bronze, stainless steel, PEEK, phenolic, polyethylene, and acetal) at tolerances as tight as ±0.0005 inches (standard) and ±0.0002 inches (Swiss), with stated capacity exceeding 700,000 assemblies annually. Complementary services include CNC engineering (CAD/CAM), in-house mechanical assembly, custom fabrication, and Vendor Managed Inventory (VMI). Injection molding is delivered through a strategic sister-company partnership with SR Plastics (50–1,000 ton presses, over-molding, sonic welding, hot stamping, pad printing), effectively creating a single-supplier offering for combined metal-and-plastic subassemblies.

SR Machining operates a quote-based B2B sales motion driven by website RFQ submissions, phone inquiries, and dedicated regional pages targeting Southern California cities; the company also declares service to nationwide and international customers. Pricing is not publicly disclosed. Target verticals are aircraft and aerospace (use cases including hydraulic components, parking brake assemblies, refueling hardware), industrial and commercial (machined die-castings, pump components), medical and pharmaceutical (instrumentation, fluid-control devices), and fluid handling (manifolds, spool valves, natural-gas system components). The company is privately owned with no disclosed institutional investors, leadership profiles, or financial statements.

Name

SR Machining

Legal name

SR Machining

Website

https://srmachining.com

Company type

Private

Founded year

2004

Operating status

Operating

Headcount range

51–100 employees

Short description

SR Machining is a privately held precision CNC machining job shop in Norco, California, operating 40+ CNC machines to produce tight-tolerance turned, milled, and Swiss-machined components for aerospace, medical, industrial, and fluid-handling OEM customers, with complementary injection molding via sister company SR Plastics.

Ownership category

akta.pro rank

Product category

Precision CNC Machining Services

NAICS

Machine Shops (332710), Precision Turned Product Manufacturing (332721)

SIC

Screw Machine Products (3451), Miscellaneous Fabricated Metal Products (3490)

akta.pro primary industry

CNC Machine Tools (Turning, Milling, Machining Centers) (IMAHADAA)

akta.pro secondary industries

Custom Injection Molding & Contract Manufacturing (Job Shops/CMs) (IMANAFAJ), Metal Cutting Tools, Tooling & Workholding (Cutters, Inserts, Chucks, Fixtures) (IMAHADAB)

Keywords

• Precision CNC machining
• CNC turning services
• CNC milling services
• Swiss screw machining
• Injection molding services

Headquarters

HQ city

Norco

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Custom CNC Machining Services: Project-based precision CNC machining manufacturing revenue. Customers submit RFQs for custom components; pricing is quote-based based on specifications, materials, tolerances, and volume requirements. Supports prototype through high-volume production runs.
2. Injection Molding Services: Through sister company SR Plastics partnership, offering injection molding services (50-1,000 ton presses) as complementary manufacturing solution for combined machining and molding requirements.
3. Vendor Managed Inventory (VMI): Stocking programs and consignment services for ongoing production support, maintaining dedicated inventory at facility or customer site with real-time usage alignment.
4. Assembly Services: In-house assembly capabilities for complete mechanical assemblies including press-fitting inserts, gasket installation, and integration of multiple machined components into finished subassemblies.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

SR Machining is a precision CNC machining service provider that manufactures custom components in a broad range of engineered plastics and metals (aluminum, bronze, PEEK, phenolic, polyethylene, acetal, stainless steel, and other alloys). Core services include CNC turning (0.25"–16" diameter), CNC milling up to 48" × 19" × 19" with 4-axis and 5-axis capability, Swiss screw machining to ±0.0002", and injection molding (50–1,000 ton presses) delivered through sister company SR Plastics. The company supports prototype through high-volume production runs exceeding 700,000 assemblies per year for aerospace, medical, industrial/commercial, and fluid handling customers.

Product overview

SR Machining is a precision CNC machining service provider offering a comprehensive suite of manufacturing solutions. The core offerings include CNC Turning (lathe services for diameters 0.25"–16"), CNC Milling (parts up to 48"×19"×19" with 4-axis and 5-axis capabilities), CNC Swiss Machining (for small diameters up to 1.250" with ±0.0002" tolerances), and Injection Molding (via sister company SR Plastics, 50–1,000 ton presses). These are supported by Value Added Services (metal fabrication, assembly, VMI), CNC Engineering Services (CAD/CAM, design support), and Quality Inspection Services (in-house metrology). The company operates over 40 in-house CNC machines (21 CNC lathes, 17 CNC milling machines, 5 Swiss screw machines) to serve aerospace, industrial, medical, and fluid handling industries.

Differentiator

Problem solved

Functional benefit

Products and services

• CNC Turning Services Precision CNC turning/lathe services for part diameters from 0.25" up to 16", with tolerances to ±0.0005". Features twin-spindle and live-tool capabilities for complex geometries in metals and engineered plastics, intended for aerospace, medical, industrial, and fluid handling OEMs.
• CNC Milling Services Custom CNC milling services for parts up to 48" × 19" × 19" with tolerances to ±0.0005", including 4-axis and 5-axis capabilities for complex multi-surface geometries. Targets aerospace, medical, industrial, and fluid handling customers requiring high-volume or prototype production.
• CNC Swiss Machining Precision CNC Swiss screw machining for diameters up to 1.250" with tolerances to ±0.0002", using Swiss-type lathes with live tooling, sub-spindles, and automatic bar feeders for high-volume tight-tolerance components in aerospace, medical, and industrial applications.
• Injection Molding Custom injection molding services delivered through sister company SR Plastics using 50–1,000 ton presses, with over-molding, sonic welding, hot stamping, and pad printing. Provides combined machining and molding solutions to industrial, aerospace, medical, and commercial OEM customers.
• Value Added Services Complementary in-house services including custom metal fabrication, mechanical assembly (press-fit inserts, gasket installation, subassembly integration), and Vendor Managed Inventory (VMI) / consignment stocking programs for ongoing production support.
• CNC Engineering Services Full in-house manufacturing and production engineering using SolidWorks, Pro E, Gibbs Cam, Part Maker, and Surf Cam CAD/CAM software to generate programs for prototyping and full production runs across CNC turning, milling, and Swiss machining.
• Quality Inspection Services In-house quality inspection in a temperature-controlled inspection room using optical comparator (Suburban Tool with Quadra-Chek), Helmel Check Master and Micro Star CMM systems, Keyence laser optical machines, Mahr Federal Perth meters, surface finish analyzers, and precision gages and micrometers.

Quantifiable outcome

• Production capacity exceeding 700,000 assemblies per year
• +2 more outcomes

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• SR PlasticscoreStrategic or Co-development PartnerSR Plastics is a sister company providing in-house injection molding services (50-1,000 ton presses) that complement SR Machining's precision CNC capabilities. This partnership enables integrated manufacturing solutions combining machined and injection-molded components through a single supplier, streamlining procurement and reducing lead times for customers requiring both disciplines. SR Plastics offers over-molding, sonic welding, hot stamping, and pad printing services.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Protolabs: Public on-demand digital manufacturer offering rapid CNC machining, milling, turning, and injection molding services to aerospace, medical, and industrial customers. Operates a similar B2B job-shop model at much larger scale.
• Xometry: AI-enabled marketplace aggregating thousands of CNC machining job shops, including precision turning, milling, and Swiss-style work for aerospace, medical, and industrial buyers. Competes directly for the same RFQ flow.
• Hubs: On-demand CNC machining and manufacturing services platform (part of Protolabs Network) offering CNC turning, milling, and finishing to global B2B customers. Direct peer to SR Machining's core CNC machining offering with overlapping end-markets.
• Fictiv: Digital manufacturing platform providing CNC machining, injection molding, and 3D printing services with instant quoting. Targets aerospace, medical, and industrial OEMs with similar manufacturing-service requirements.
• Owens Industries: Family-owned precision CNC machining job shop serving aerospace, medical, defense, and industrial markets with tight-tolerance turning, milling, and Swiss machining. Closest privately-held size and business model analog.
• Star Rapid: Custom CNC machining service provider offering prototyping to production runs across plastics and metals, with online quoting. International peer serving the same RFQ-driven aerospace/medical/industrial demand.
• Able Aerospace Services: GE Aviation-affiliated provider of helicopter and fixed-wing component MRO, machining, and replacement parts with AS9100 quality systems. Most directly comparable on aerospace precision machining and component manufacturing.
• Metaltek International: Custom metal component manufacturer combining casting with precision CNC machining for aerospace, industrial, and fluid handling markets. Closely overlapping end-market mix and integrated manufacturing model.

Broad incumbents

• Precision Castparts Corp: Large diversified aerospace components manufacturer (Berkshire Hathaway subsidiary) covering machined structures, fasteners, and engine components. Represents the upper end of the precision-machined-parts value chain SR Machining competes in.
• Howmet Aerospace: Global aerospace leader in engineered metal products including precision-machined components for engines and airframes. Sets the compliance, scale, and capability benchmark for aerospace machining competitors.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/sr-machining

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SR Machining