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Precision Flange & Machine Services

Get precision-machined flanges, couplings, and related components backed by nearly 60 years of manufacturing experience. M.A.R.'s Engineering delivers tight tolerances, dependable repeatability, and integrated in-house processes that help reduce lead times, simplify sourcing, and support both prototype and production-volume requirements.

Precision machined flange component in a machine shop

Our Precision Flange & Machine Services Services

Explore core machining and finishing capabilities that support precision flange production from prototype through repeat manufacturing runs.

Flanges & Couplings

Manufacturing of weld-neck, slip-on, and blind flanges plus shaft couplings with close bore-to-face and bolt-circle accuracy using CNC turning and milling.

CNC Turning

Precision turning for cylindrical parts and flange-related components with consistent dimensional relationships, live tooling support, and capacity for prototype or high-volume work.

CNC Milling

4-axis milling and related machining for bolt holes, slots, keyways, flats, and custom features that complete complex flange geometries accurately.

EDM Machining

Wire EDM capability for intricate outlines, sharp internal corners, and tooling needs where conventional machining cannot achieve the required detail.

Finishing & Plating

In-house finishing options including zinc, black oxide, nickel, polishing, and powder coating to improve corrosion resistance and part readiness.

Contract Manufacturing

Single-source production support that combines machining, finishing, and light assembly to streamline sourcing and reduce multi-vendor delays.

Integrated Machining Solutions

Built For Accuracy, Speed, And Repeatability

M.A.R.'s Engineering provides precision flange and machine services for customers who need dependable tolerances, efficient production, and fewer handoffs between vendors. With CNC turning, milling, EDM, finishing, and assembly handled in one facility, projects move faster from prototype to production while maintaining traceability, surface quality, and consistent dimensional performance across every run.

Machinist inspecting a precision flange component
Trusted Manufacturing Partner

Success Stories

See why customers rely on consistent machining quality, responsive service, and dependable production support.

"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?

Customers choose M.A.R.'s Engineering for precision, responsiveness, and complete in-house manufacturing support.

Experience

Family-owned since 1964, with decades of precision machining knowledge across demanding industrial applications.

Integrated

Machining, EDM, finishing, and light assembly in one facility reduce delays and simplify project management.

Precision

ISO compliant quality systems support traceability, repeatability, and close-tolerance production across every run.

Capacity

Single-spindle, multi-spindle, CNC, and grinding capabilities support both prototypes and high-volume orders.

About Our Team

Built on decades of machining expertise.

M.A.R.'s Engineering Company Inc. has been a family-run precision manufacturer since 1964, founded by Manuel and Reine Ambrosio with a focus on close-tolerance screw machining. Over the decades, the company expanded its capabilities through multi-spindle equipment, CNC machining, Wire EDM, finishing, and secondary operations to better serve customers needing complete manufacturing support under one roof. That long-term investment in equipment and process control reflects a practical vision: deliver dependable quality, reduce lead times, and make sourcing easier for customers who need prototype parts, repeat production, and high-volume manufacturing from a trusted single-source partner.

Since 1964Family-owned precision manufacturing experience spanning nearly 60 years.
35 MachinesSingle-spindle screw machine capacity for flexible production volumes.
One FacilityIntegrated machining, finishing, and assembly under one roof.

Frequently Asked Questions

What are different types of flanges?

Common flange types include weld-neck, slip-on, blind, socket weld, threaded, and lap joint flanges. Each serves a different mechanical or piping requirement based on pressure, alignment, sealing, and installation needs. M.A.R.'s Engineering manufactures precision flange configurations and custom profiles with close control over bore dimensions, bolt-circle accuracy, and machined feature relationships.

What exactly is a flange?

What is the purpose of a blind flange?

What materials are available for precision flange machining?

Can you handle both prototype and production flange orders?

How do you maintain tight tolerances on machined parts?

Do you offer finishing or plating for machined flanges?

What industries use precision machined flanges and couplings?

Still Have Questions?

Talk with our team about specs, materials, and production needs.

Serving Manufacturing Needs

Supporting customers with precision machining services from our San Leandro facility and coordinated production capabilities.

San Leandro, CA

Headquarters

Mon-Fri 8AM-4:30PM

Business Hours

5.0 Google Rating

Customer Rating

Need Production Support?

Reach out to discuss your machining requirements and timelines.

Certified & Trusted

Awards and Recognition

ISO compliant certification badge

ISO Compliant

Supports traceable, repeatable quality processes.

Mil-1-45208A compliance badge

Mil-1-45208A

Quality compliance for controlled manufacturing.

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5-Star Rated

Backed by strong customer satisfaction.

Request Precision Machining Support

Share your part requirements, quantities, materials, and timeline. Our team will review your project and follow up with the next steps.

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.