CNC Turning
Precision turning for shafts, bushings, fittings, and threaded parts with live tooling and sub-spindle capability for prototypes through production runs.
M.A.R.'s Engineering delivers precision machining and turned product manufacturing with tight tolerances, integrated in-house processes, and dependable production support. From prototypes to high-volume runs, customers get streamlined sourcing, consistent quality, and faster turnaround from a single family-owned machine shop built for complex parts and repeatable results.
Comprehensive precision machining services for turned parts, complex components, prototypes, and high-volume production in one facility.
Precision turning for shafts, bushings, fittings, and threaded parts with live tooling and sub-spindle capability for prototypes through production runs.
Swiss-type screw machining for miniature, high-aspect-ratio, and complex parts requiring exceptional dimensional stability and tolerances as tight as ±0.0001 inches.
High-volume screw machining with multiple simultaneous operations for cost-efficient production of precision turned parts in runs of 500+ units.
Wire EDM for conductive materials requiring intricate outlines, sharp internal corners, hardened alloys, and custom tooling support.
Precision grinding for shafts, pins, tubing, and bar stock with super-fine finishes up to 4 μin and tolerances up to 0.0001 inches.
In-house plating, polishing, deburring, coating, and light assembly services that help deliver ready-to-install components with consistent quality.
M.A.R.'s Engineering supports customers who need more than basic machining. With CNC turning, Swiss machining, screw machining, EDM, grinding, and finishing under one roof, the shop helps reduce lead times, simplify vendor management, and maintain tight control over quality. Whether you need prototype development or repeatable high-volume output, every job is backed by decades of process knowledge and traceable production standards.
See how precision machining and integrated production help customers improve quality, speed, and sourcing efficiency.
"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."
"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."
"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."
Customers rely on M.A.R.'s Engineering for precision, consistency, and streamlined manufacturing support.
Family-owned since 1964 with decades of precision machining knowledge across complex turned components.
In-house machining, EDM, grinding, finishing, and assembly reduce delays and simplify project coordination.
Single-spindle, multi-spindle, CNC, and Swiss equipment support prototype work through high-volume production.
ISO-compliant systems and traceable processes help maintain repeatability, inspection control, and dimensional consistency.
Built on decades of family-led machining expertise.
M.A.R.'s Engineering Company Inc. was founded in 1964 by Manuel and Reine Ambrosio and has remained a family-run business ever since. Over the decades, the company expanded its capabilities through new equipment, a second operations department, and continued customer referrals earned through dependable work. In 1982, the acquisition of Automatic Screw Products added multi-spindle capacity, and under Manny Blaine Ambrosio's leadership, the company further invested in CNC technology and in-house Wire EDM. Today, M.A.R.'s Engineering continues to provide complete manufacturing support from prototype through production, combining traditional screw machining expertise with modern precision processes to deliver consistent quality, shorter lead times, and single-source convenience.
M.A.R.'s Engineering manufactures a wide range of precision turned and machined components, including shafts, pins, bushings, sleeves, fittings, connectors, threaded fasteners, inserts, flanges, couplings, and miniature precision parts. The shop supports both simple cylindrical components and complex multi-featured parts requiring turning, milling, threading, grinding, EDM, and finishing in one coordinated production workflow.
Talk with our team about materials, tolerances, volumes, and lead times.
Structured quality controls and traceability
Quality compliance for inspection standards
Decades of machining reliability
Share your drawings, quantities, materials, and tolerance requirements, and our team will review the best path from prototype to production.
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.