Swiss Screw Machining
Produce small, complex components with exceptional dimensional stability using sliding headstock Swiss machines suited for tight tolerances, fine features, and high length-to-diameter parts.
Get precision-machined components and dependable steel part finishing from one experienced manufacturing partner. M.A.R.'s Engineering combines Swiss-type CNC capability with in-house plating and finishing support to help buyers reduce vendor handoffs, maintain tight tolerances, and keep production moving from prototype through repeat runs.

Precision machining and finishing services for tight-tolerance metal parts, prototypes, and production runs.
Produce small, complex components with exceptional dimensional stability using sliding headstock Swiss machines suited for tight tolerances, fine features, and high length-to-diameter parts.
Manufacture screws, studs, inserts, and standoffs with accurate thread forms, repeatable dimensions, and optional plated finishes for corrosion resistance and functional performance.
Create precision connectors, adapters, and hose fittings with threads, grooves, ports, and sealing features completed in fewer setups for better consistency.
Machine smooth, stepped, threaded, or cross-drilled shafts and pins with close diameter control, fine finishes, and ready-for-assembly processing options.
Produce dimensionally critical bushings and sleeves with tight bore tolerances, refined outer diameters, and finishing options that improve wear resistance.
Support steel parts with zinc and other finishing options, plus polishing, deburring, and light assembly to streamline delivery of production-ready components.
M.A.R.'s Engineering helps buyers simplify sourcing by combining precision Swiss-type machining with in-house finishing support under one roof. That means tighter control over tolerances, fewer production handoffs, and more consistent results across prototypes and repeat orders. From miniature turned parts to threaded steel components requiring protective finishing, the team is equipped to deliver accuracy, traceability, and dependable turnaround.

See how precision machining and finishing support help customers improve consistency and lead times.
Built for buyers who need precision, consistency, and streamlined production support.
Family-owned since 1964, with decades of precision machining knowledge across demanding industrial applications.
Machining, finishing, plating, and light assembly in one facility reduce delays and vendor coordination.
Swiss machining and grinding capabilities support ultra-close tolerances and repeatable quality across production runs.
ISO compliant quality systems support dimensional consistency, inspection control, and dependable production documentation.
Built on decades of machining expertise.
M.A.R.'s Engineering Company Inc. was founded in 1964 by Manuel and Reine Ambrosio and has remained family-run ever since. Over the decades, the company expanded from precision screw machining into a broader in-house manufacturing operation that includes CNC capabilities, Wire EDM, finishing support, and production services for complex parts. Leadership continuity has helped preserve a hands-on approach to quality, customer service, and long-term manufacturing relationships. Today, M.A.R.'s Engineering continues to invest in equipment and process control so customers can move from prototype to production with fewer outside vendors, tighter oversight, and dependable dimensional consistency on every order.
Swiss-type 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, slender, and complex parts with tight tolerances. It is commonly used for miniature components, fine threads, cross-holes, and multi-feature parts requiring excellent repeatability.
Talk with our team about your part specs and production needs.
Quality-focused manufacturing process controls.
Inspection system compliance standard.
Positive verified customer feedback.
Share your drawings, quantities, materials, and finishing requirements. Our team will review your project and follow up with next-step details.
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.