Threaded Fasteners
Manufacturing of aerospace bolts, screws, studs, inserts, and threaded standoffs with unified, metric, acme, and custom thread profiles for consistent fit, strength, and repeatability.
M.A.R.'s Engineering manufactures aerospace bolts, screws, studs, inserts, and precision fasteners with tight tolerances, full traceability, and scalable production. Backed by decades of screw machining expertise and AS9100-aligned quality practices, the team supports prototype through high-volume runs for demanding aerospace and defense applications where consistency, material integrity, and thread accuracy matter.
Precision manufacturing services for aerospace fasteners, threaded components, and close-tolerance parts from prototype through production.
Manufacturing of aerospace bolts, screws, studs, inserts, and threaded standoffs with unified, metric, acme, and custom thread profiles for consistent fit, strength, and repeatability.
Swiss-type CNC machining for miniature and complex aerospace fasteners requiring long, slender geometries, fine threads, and tolerances as tight as ±0.0001 inches.
Precision turning for cylindrical threaded parts and custom aerospace hardware, supporting prototypes and production runs with accurate feature relationships and repeatable quality.
High-volume screw machining for aerospace fastener orders of 500+ pieces, delivering lower per-part costs, faster cycle times, and consistent dimensional control.
Production of micro-pins, contact extensions, spacers, and other miniature precision components used alongside aerospace fastening and assembly systems.
In-house plating, polishing, deburring, and light assembly services to improve corrosion resistance, surface performance, and readiness for aerospace end use.
M.A.R.'s Engineering helps aerospace buyers source precision bolts and fasteners from one experienced manufacturing partner. With capabilities spanning screw machining, Swiss machining, CNC turning, finishing, and inspection, the company supports both development and production needs while maintaining thread accuracy, dimensional consistency, and material control. That integrated approach reduces vendor handoffs, shortens lead times, and helps keep critical aerospace programs moving.
Precision manufacturing support for buyers who need repeatable quality, traceability, and dependable production capacity.
"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."
Aerospace programs demand consistency, capability, and dependable quality systems.
Nearly 60 years of precision screw machining experience for complex, close-tolerance aerospace components.
Machining, finishing, plating, and light assembly in one facility reduce delays and vendor coordination.
ISO compliant processes and Mil-1-45208A alignment support dimensional consistency and documented traceability.
Single-spindle, multi-spindle, Swiss, and CNC capabilities support prototypes through high-volume aerospace fastener runs.
Family-run precision manufacturing with decades of experience.
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 from precision screw machining into a more complete manufacturing operation by adding multi-spindle capacity, a CNC department, and in-house Wire EDM capabilities. That steady investment has helped the team support customers who need close tolerances, reliable repeatability, and streamlined production under one roof. Today, M.A.R.'s Engineering continues to serve demanding industries including aerospace with an emphasis on responsive service, practical manufacturing expertise, and long-term customer relationships built through consistent quality and word-of-mouth trust.
A precision fastener is a bolt, screw, stud, insert, or similar component manufactured to very tight dimensional tolerances and consistent thread specifications. These parts are used where fit, strength, repeatability, and traceability are critical. In aerospace applications, precision fasteners often require controlled materials, accurate thread forms, fine surface finishes, and documented inspection to ensure dependable assembly performance.
Talk with our team about specs, quantities, and production options.
Supports controlled, traceable manufacturing processes.
Quality system compliance for inspection standards.
Referenced for aerospace quality consistency.
Share your drawings, quantities, materials, and tolerance requirements. Our team will review your project and respond with next-step manufacturing 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.