Miniature Components
Manufacture of miniature precision components, micro-pins, spacers, and complex small-diameter parts using Swiss machining and EDM for ultra-tight tolerances and intricate geometries.
M.A.R.'s Engineering manufactures custom Swiss-type turned components and miniature precision parts with ultra-tight tolerances, complex geometries, and dependable repeatability. Backed by nearly 60 years of machining experience, in-house secondary processes, and ISO-compliant quality systems, we support prototype development through high-volume production for demanding industries including aerospace, medical, electronics, and defense.

Precision-machined turned parts for miniature, threaded, connector, and high-tolerance component applications.
Manufacture of miniature precision components, micro-pins, spacers, and complex small-diameter parts using Swiss machining and EDM for ultra-tight tolerances and intricate geometries.
Production of precision threaded fasteners, inserts, studs, and standoffs with accurate thread forms, repeatable dimensions, and support for both custom and standard profiles.
Custom fittings and connectors with threads, grooves, ports, and sealing features completed in fewer setups for strong dimensional control and reliable functional performance.
Precision bushings and sleeves produced with tight bore tolerances, fine surface finishes, and material options suited for wear resistance and accurate assembly fit.
High-precision shafts and pins manufactured with turning and centerless grinding for close diameter control, smooth finishes, and ready-to-install performance.
Swiss-type CNC machining for long, slender, and complex turned parts requiring multiple operations in one setup, reduced deflection, and tolerances as tight as ±0.0001 inches.
Custom Swiss-type turned components are ideal when part geometry, diameter, and tolerance leave little room for error. M.A.R.'s Engineering combines Swiss machining, screw machining, EDM, grinding, and finishing in one facility to reduce handoffs and maintain control from raw material to final inspection. That means faster prototype-to-production transitions, consistent repeatability, and dependable quality for industries where dimensional accuracy and traceability matter most.

See how precision, consistency, and in-house capability support demanding production requirements.
Built for precision work, responsive production, and long-term manufacturing partnerships.
Family-owned machining expertise built over nearly 60 years of precision manufacturing experience.
Swiss machining, EDM, grinding, finishing, and light assembly under one roof reduce delays.
Processes support tolerances to ±0.0001 inches for miniature and critical-function turned components.
ISO-compliant systems and full dimensional traceability help maintain consistency across every run.
Experienced machinists focused on precision manufacturing excellence.
M.A.R.'s Engineering Company Inc. was founded in 1964 by Manuel and Reine Ambrosio and has remained family-run through decades of growth in precision machining. Over the years, the company expanded its capabilities by adding multi-spindle equipment, a CNC department, and in-house Wire EDM to improve quality control, tooling responsiveness, and production flexibility. Today, M.A.R.'s Engineering continues to serve customers that need close-tolerance turned parts, dependable repeatability, and streamlined manufacturing support from prototype through full production. The company's vision is to deliver complete, single-source machining services that save customers time, reduce vendor complexity, and maintain the high standards required in aerospace, medical, electronics, and other demanding industries.
Swiss machining is a precision CNC turning process that uses a sliding headstock and guide bushing to support bar stock right at the cutting point. This setup reduces deflection and vibration, making it ideal for small-diameter, long, slender, or highly detailed parts. It allows multiple operations in one setup and can hold tolerances as tight as ±0.0001 inches.
Talk with our machining team about specs, tolerances, and production needs.
Quality systems support traceable precision manufacturing.
Meets recognized inspection system requirements.
Long-standing precision manufacturing experience.
Share your drawings, material requirements, tolerances, and production volume. Our team will review your project and respond with next-step guidance.
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.
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.