The first choice in
precision manufacturing.
Trio Manufacturing is a precision machine shop built for the industries that can’t afford a mistake — aerospace, defense, commercial aviation, energy, medical, and satellite. One facility. One team. Every part accountable.
We build the parts that let ambitious programs get off the ground — literally.
Trio sits at the intersection of precision and innovation. As a supplier to the defense, aerospace, and commercial manufacturing sectors, we take pride in our state-of-the-art El Segundo facility and the expertise of the people who run it. Our arsenal of multi-axis machining centers, paired with a robust quality department and cutting-edge coordinate measuring machines, ensures every part we produce meets the highest standards of excellence and compliance — on time, every time.
Four principles that shape every part we ship.
On-Time, Every Time
Dock dates matter. Our production planning, pallet automation, and dedicated capacity exist to hit your schedule — every program, every time.
Precision as Baseline
Aerospace-grade tolerances aren’t a premium tier at Trio — they are the standard we hold on every part, every shift, every material.
In-House, End to End
Engineering, tooling, machining, and inspection all live under one roof in El Segundo. No outsourcing, no supply-chain surprises, no lost accountability.
Owner on the Floor
On-site ownership means quality decisions get made at the machine — not in a spreadsheet three time zones away.
From a single machine to a 40-machine facility.
Established in El Segundo
Trio Manufacturing opens its doors as a precision machine shop serving the Southern California aerospace corridor.
AS9100 Certification
Formal aerospace quality-management certification unlocks Tier-1 and Tier-2 program work across military and commercial aviation.
Multi-Axis Fleet Build-Out
Investment in 5-axis and mill-turn machining centers — Matsuura, Makino, DMG Mori, Okuma — establishes Trio as a full-envelope multi-axis shop.
Lights Out Manufacturing
Pallet-pool automation and Trio Vision™ analytics bring the shop to 24/7 unattended production.
A National Precision Partner
Trio supplies aerospace, defense, energy, medical, and satellite programs from a single 40+ machine facility, engineered for scale.
People who care about the part more than the paperwork.
Trio is owner-operated and floor-run. Engineering, production, and quality work in the same building, in the same shift, on the same part.
Twelve reasons customers keep coming back.
None of these are marketing bullets. They are the operational commitments that ship with every part we make.
Trusted where precision is non-negotiable.
Audited, registered, ready.
El Segundo, California.
601 Lairport StreetEl Segundo, CA 90245
United States