Google Icon

Plastic Precision CNC Machined Parts Custom Screw Services

Get custom plastic precision CNC machined parts backed by decades of screw machining expertise, tight-tolerance production, and integrated finishing. From prototypes to high-volume runs, M.A.R.'s Engineering delivers consistent quality, streamlined manufacturing, and responsive support for demanding applications that require accuracy, repeatability, and dependable lead times.

Custom plastic CNC machined parts

Our Custom Screw Services Services

Precision machining solutions for plastic parts, from prototypes to repeatable production runs with integrated in-house support.

Swiss Machining

Swiss screw machining produces small, complex plastic components with exceptional dimensional stability, tight tolerances, and multi-operation efficiency in a single setup for intricate custom parts.

CNC Turning

CNC turning supports precision cylindrical plastic parts such as bushings, spacers, fittings, and threaded components with consistent feature relationships across prototype and production quantities.

Single-Spindle Machining

Single-spindle screw machining is ideal for short to medium runs of custom plastic parts requiring close tolerances, multiple operations, and efficient production of specialized geometries.

Multi-Spindle Production

Multi-spindle screw machining delivers cost-efficient, high-volume production for plastic precision parts by performing multiple operations simultaneously with strong repeatability and throughput.

Centerless Grinding

Centerless grinding supports cylindrical plastic components that need fine finishes, accurate outer diameters, and dependable consistency for mating assemblies and precision applications.

Finishing & Assembly

In-house finishing, polishing, deburring, and light assembly help deliver ready-to-use plastic machined parts while reducing outside vendors, delays, and handling risks.

Tight Tolerance Manufacturing

Precision Plastic Parts Built For Performance

M.A.R.'s Engineering manufactures custom plastic precision CNC machined parts with the flexibility to support prototypes, short runs, and high-volume production under one roof. By combining screw machining, CNC turning, grinding, and finishing services, the team helps customers reduce vendor handoffs, maintain dimensional consistency, and move from concept to completed parts with greater speed, control, and traceability.

Precision machining of custom plastic parts
Trusted Manufacturing Partner

Success Stories

See how precision machining expertise supports reliable parts across prototype, custom, and production manufacturing needs.

"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 rely on M.A.R.'s Engineering for precision, continuity, and efficient in-house manufacturing support.

Experience

Family-owned since 1964, with decades of precision screw machining knowledge across demanding industries.

Integration

In-house machining, finishing, and light assembly reduce delays, handoffs, and multi-vendor coordination issues.

Capacity

Single-spindle and multi-spindle equipment supports both custom prototypes and efficient high-volume production.

Quality

ISO compliant processes and traceability help maintain repeatable tolerances and dependable production consistency.

About Our Team

Built on decades of family-run machining expertise.

M.A.R.'s Engineering Company Inc. was founded in 1964 by Manuel and Reine Ambrosio and has remained a family-run precision manufacturing business ever since. Over the decades, the company expanded its capabilities through new equipment, a second operations department, multi-spindle capacity, and the addition of CNC and Wire EDM technology. That steady investment allows M.A.R.'s Engineering to support customers with complete manufacturing services from prototype through production in one facility. The company's vision centers on dependable quality, responsive service, and practical manufacturing efficiency, helping customers reduce lead times, simplify sourcing, and receive precision parts built to exact specifications.

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

Frequently Asked Questions

What types of plastic precision CNC machined parts can you produce?

M.A.R.'s Engineering can produce a wide range of custom plastic components, including bushings, sleeves, spacers, pins, threaded parts, fittings, and other turned or machined parts with close tolerances. Capabilities support simple cylindrical parts as well as more intricate geometries requiring multiple operations, fine finishes, and repeatable dimensional control across prototype and production quantities.

Can you handle both prototype and high-volume production runs?

What machining processes are available for custom plastic parts?

How tight are the tolerances you can hold?

Do you machine only plastics, or can you work with metals too?

Do you offer finishing or assembly services after machining?

What quality standards do you follow?

How do I request a quote for custom screw machined plastic parts?

Still Have Questions About Your Parts?

Talk with our team about drawings, tolerances, materials, and production options.

Certified & Trusted

Awards and Recognition

ISO compliant certification badge

ISO Compliant

Quality-focused manufacturing process controls.

Mil-1-45208A compliance badge

Mil-1-45208A Compliance

Supports documented inspection standards.

5-star customer rating badge

5-Star Google Rating

Backed by verified customer reviews.

Request Precision Machining Support

Send your drawings, quantities, and material requirements to discuss custom plastic parts, lead times, and the right production approach.

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.