What Duncan Industries Inc does

Duncan Industries Inc is a family-owned precision aerospace machining company founded in 1944 in Los Angeles and now headquartered in Santa Fe Springs, California. The firm provides tight-tolerance CNC milling (3-, 4-, and 5-axis), precision turning, sub-micro-inch grinding, finishing, coatings, assembly, non-destructive testing, and quality assurance as nine integrated in-house disciplines that produce flight hardware from raw bar stock through final inspection. Precision capabilities include cylindricity tolerances as tight as .000050 inches, surface finishes down to 2 micro-inches, and inspection measurement accuracy to .00001 inches, supported by AS9100D quality certification and WOSB/SBA designation.

The company serves aerospace manufacturers as its primary vertical, with named customers spanning Bell Helicopter, Héroux-Devtek, Triumph, Subaru, and PCX. The Bell Helicopter relationship, active since 1962, is the most strategic and includes work on the V-22 Osprey and prior heritage programs such as lunar mission hydraulic valve components and SR-71 Blackbird flight-control seals. Sales are direct and consultative, with on-site customer audits and source inspections, and pricing is quote-based against custom specifications rather than standardized tiers.

Revenue is generated through multi-year production contracts for custom precision parts under direct enterprise sales to primes and tier-one suppliers. The business is family-owned across three generations, currently led by Owner/Chairwoman Cheri Beckerle and President Ed Martinez, with no institutional investors, parent company, or public listing. Operating scope is domestic U.S. only, with a 24/7 production footprint at the single Santa Fe Springs facility.

Name

Duncan Industries Inc

Legal name

Duncan Industries Inc

Website

https://duncanindustries.net

Company type

Private

Founded year

1944

Operating status

Operating

Headcount range

1–10 employees

Short description

Duncan Industries is a family-owned precision aerospace machining company, founded 1944, serving Bell Helicopter and other aerospace primes with tight-tolerance CNC milling, turning, grinding, and assembly from its Santa Fe Springs, California facility.

Ownership category

akta.pro rank

Product category

Aerospace Precision Manufacturing

NAICS

Machine Shops (33271)

SIC

Screw Machine Products (3451)

akta.pro primary industry

Metal Airframe Structures & Machined Parts (IMABAEAC)

Keywords

• Precision aerospace manufacturing
• CNC machining services
• Flight hardware components
• Aerospace parts manufacturing
• Precision grinding services

Headquarters

HQ city

Santa Fe Springs

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Precision Aerospace Parts Manufacturing: Custom precision manufacturing of aerospace components including turning, milling, grinding, finishing, and assembly services. Revenue generated from production contracts with aerospace manufacturers, primarily serving defense and commercial aerospace programs.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Duncan Industries provides custom precision aerospace manufacturing services including multi-axis CNC milling, precision turning, sub-micro-inch grinding, finishing and marking, coatings and assembly, non-destructive testing, and quality assurance inspection. Services are delivered as an integrated offering spanning from raw bar stock to flight-ready inspection, targeting commercial and defense aerospace manufacturers such as Bell Helicopter and Héroux-Devtek.

Product overview

Duncan Industries offers precision aerospace manufacturing as a unified service portfolio rather than discrete software products. The company provides nine integrated manufacturing disciplines — Programming, Grinding, Milling, Turning, Finishing & Marking, Assembly, Non-Destructive Testing, Quality Assurance, and Inventory — delivered as a single coordinated service from raw bar stock through final inspection. This integrated approach allows customers to source complete precision parts through one supplier.

Differentiator

Problem solved

Functional benefit

Products and services

• Precision Aerospace Manufacturing Services Integrated precision aerospace manufacturing services encompassing nine disciplines (programming, grinding, milling, turning, finishing and marking, assembly, non-destructive testing, quality assurance, and inventory) delivered as a single coordinated offering from raw bar stock through final inspection. Targets commercial and defense aerospace manufacturers requiring tight-tolerance flight hardware components.

Quantifiable outcome

• 80+ years of aerospace manufacturing excellence
• +3 more outcomes

Named customers5 records

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered core.

• Bell HelicoptercoreOthersLong-standing customer relationship since 1962. Duncan manufactures numerous aerospace components for Bell programs including V-22 Osprey. Bell has recognized Duncan as Premier Supplier and named them Small Business of the Year. This is the company's most significant customer relationship.
• Héroux-DevtekcoreOthersApproved supplier for landing gear systems and aerospace parts manufacturing. Holds supplier approval documentation from Héroux-Devtek.

Scale indicators8 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Craft Aerospace & Machine: U.S. precision CNC machining shop producing complex aerospace components and assemblies. Comparable as a similarly-sized AS9100-certified contract manufacturer serving aerospace customers with multi-axis milling and turning.
• Stelma Inc: Small U.S. precision machining shop serving aerospace and defense primes with multi-axis CNC milling, turning and grinding. Directly comparable as a similarly-sized Tier-2/3 shop competing for the same machined-parts work Duncan targets.
• PMI Aerospace: U.S. precision machining and assembly provider focused on aerospace and defense structural components. Comparable as a small-shop supplier of flight-critical machined parts to rotorcraft and fixed-wing primes.
• Roush Industries (Aerospace Division): U.S. contract manufacturer offering precision machining, assembly and testing for aerospace and defense customers. Comparable as a similarly-positioned Tier-2 supplier with AS9100 certification and direct-prime relationships.
• Hyde Aero Products: Family-owned U.S. precision aerospace manufacturer producing machined flight hardware for primes and Tier-1s. Comparable in ownership profile, scale and tight-tolerance machining focus serving aerospace OEMs.

Broad incumbents

• Triumph Group: Large publicly-traded aerospace structures and precision components manufacturer. Comparable as a Tier-1 supplier of machined aerospace parts and assemblies across commercial and defense programs; mentioned as a Duncan customer but operates at vastly larger scale across multiple sites.
• Ducommun Incorporated: U.S. supplier of aerospace structures, machined components and electronic assemblies. Comparable for precision-machined flight hardware and AS9100-certified manufacturing for defense and commercial customers.
• Magellan Aerospace: Canadian aerospace supplier providing precision-machined components, assemblies and engineering services to commercial and defense primes. Comparable for tight-tolerance machined flight hardware and similar rotorcraft and engine-part exposures.
• Héroux-Devtek: Canadian aerospace manufacturer specializing in landing gear, hydraulic systems and precision-machined flight hardware. Directly comparable as both a Duncan customer (landing gear) and a peer for tight-tolerance aerospace components serving major primes.
• Precision Castparts Corp: Berkshire Hathaway-owned supplier of complex-machined and investment-cast aerospace components. Comparable as a major Tier-1 source for tight-tolerance structural and engine parts, though operating at far greater scale and capital intensity than Duncan.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/duncan-industries-inc

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

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 Duncan Industries Inc