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Aerospace & Defense Machined Parts Custom Solutions

M.A.R.'s Engineering delivers precision-machined aerospace and defense components with tight tolerances, full traceability, and scalable production. From prototypes to high-volume runs, our San Leandro facility supports mission-critical parts with Swiss machining, EDM, CNC turning, and in-house finishing to help buyers reduce vendor complexity and maintain consistent quality.

Precision aerospace machined parts

Our Aerospace & Defense Machined Parts Services

Precision machining services for complex aerospace and defense components, from prototypes to repeat production.

Swiss Machining

Produce small, complex aerospace and defense parts with exceptional stability and tolerances as tight as ±0.0001 inches using Swiss-type CNC equipment.

EDM Machining

Create intricate profiles, sharp internal corners, and detailed features in conductive and hardened materials for demanding defense and aerospace applications.

CNC Turning

Manufacture cylindrical precision parts such as fittings, bushings, shafts, and threaded components with consistent dimensional accuracy across runs.

Miniature Components

Machine micro-scale pins, spacers, contact extensions, and other miniature precision parts where standard machining cannot meet geometry or tolerance requirements.

Threaded Fasteners

Produce screws, bolts, studs, inserts, and standoffs with accurate thread forms and repeatable quality for aerospace and defense assemblies.

Shafts & Pins

Deliver high-volume shafts and pins with fine finishes, tight diameter control, and optional secondary features like grooves, threads, and cross holes.

Mission-Critical Precision

Built for Tight Tolerances and Traceability

For aerospace and defense buyers, consistency matters as much as capability. M.A.R.'s Engineering combines Swiss machining, CNC turning, EDM, grinding, and in-house finishing under one roof to simplify sourcing and protect quality. With decades of experience in San Leandro manufacturing and an AS9100-driven approach to traceability, we help customers move from prototype to production with fewer handoffs, tighter control, and dependable repeatability.

Aerospace parts inspection and machining
Trusted Manufacturing Partner

Success Stories

See how precision machining and integrated production support demanding aerospace and defense requirements.

"We’ve had an excellent experience working with Mars. Their screw machining capabilities are top‑notch, and the precision of the parts they deliver is consistently impressive. The team is knowledgeable, responsive, and easy to work with, and their experience really shows in the results."

Tom O'Keefe
Tom O'Keefe

"We’ve had an excellent experience working with Mars. Their screw machining capabilities are top‑notch, and the precision of the parts they deliver is consistently impressive. The team is knowledgeable, responsive, and easy to work with, and their experience really shows in the results."

Tom O'Keefe
Tom O'Keefe

"We’ve had an excellent experience working with Mars. Their screw machining capabilities are top‑notch, and the precision of the parts they deliver is consistently impressive. The team is knowledgeable, responsive, and easy to work with, and their experience really shows in the results."

Tom O'Keefe
Tom O'Keefe
The M.A.R.'s Difference

Why Choose M.A.R.'s Engineering?

A dependable machining partner for complex, high-specification component manufacturing.

Experience

Family-owned since 1964, with decades of precision machining knowledge for critical component applications.

Traceability

ISO-compliant processes and aerospace-focused quality controls support documentation, consistency, and full production traceability.

Integrated

San Leandro production combines machining, EDM, grinding, finishing, and light assembly to reduce vendor handoffs.

Scalability

From prototypes to 500-plus piece runs, equipment supports both custom development and efficient repeat production.

About Our Team

Built on decades of machining expertise.

M.A.R.'s Engineering Company Inc. has been family-run since 1964, when Manuel and Reine Ambrosio founded the business to specialize in precision screw machining of complex parts to close tolerances. Over the decades, the company expanded its capabilities through multi-spindle equipment, a dedicated CNC department, and in-house Wire EDM to strengthen quality control and responsiveness. Operating from San Leandro, M.A.R.'s Engineering serves manufacturers that need dependable machining support, traceability, and consistent repeatability. Our vision is to remain a trusted single-source manufacturing partner for customers who value precision, streamlined production, and long-term relationships built through service, accountability, and continuous investment in advanced machining technology.

Since 1964Family-owned precision manufacturing experience.
±0.0001 inTolerance capability on select processes.
One FacilityMachining, finishing, and assembly under one roof.

Frequently Asked Questions

What aerospace and defense parts can M.A.R.'s Engineering manufacture?

M.A.R.'s Engineering manufactures a wide range of precision components used in aerospace and defense applications, including miniature parts, threaded fasteners, fittings, connectors, bushings, sleeves, shafts, pins, flanges, and couplings. Capabilities support both simple turned parts and complex geometries requiring milling, threading, grinding, EDM features, or finishing. Production can range from prototypes to high-volume runs depending on the part design and process selected.

What machining processes are available for custom aerospace and defense components?

How tight of tolerances can you hold?

Do you support both prototypes and production quantities?

What materials can be machined for aerospace and defense applications?

Do you offer finishing and secondary operations in-house?

What quality standards do you follow?

How do I request a quote for custom machined parts?

Need Answers for Your Project?

Talk with our machining team about specs, tolerances, and production planning.

Certified & Trusted

Awards and Recognition

ISO compliant certification badge

ISO Compliant

Supports documented quality management practices.

Mil-I-45208A compliance badge

Mil-I-45208A

Quality compliance for inspection standards.

Since 1964 trust badge

Since 1964

Long-standing precision manufacturing experience.

Discuss Your Custom Machining Requirements

Share your drawings, quantities, materials, and tolerance requirements, and our team will review the best path for production.

Contact Us Today

For immediate assistance, feel free to give us a direct call at +1 510-483-0541. You can also send us a quick email at info@marseng.com.