Case Study: Supporting Triumph Actuation Systems on the Boeing 737 MAX Program

Extreme Precision Screw Products‘ (EPSP) relationship with Triumph Actuation System grew naturally from a foundation of trust already established in the aerospace supply chain. When Triumph acquired a production line previously supported by EPSP through Honeywell, EPSP’s proven track record made the transition seamless. Today, among a few other programs, EPSP supplies precision components used in Triumph’s work on the Boeing 737 MAX, one of the most scrutinized and quality-demanding commercial aircraft programs in the world.

The Challenge

The Boeing 737 MAX program operates under intense regulatory and quality scrutiny, requiring every supplier in the chain to demonstrate exceptional precision, traceability, and delivery consistency. Triumph needed a manufacturing partner that could meet strict aerospace quality requirements, support a dynamic production schedule, and provide the long-term program stability that complex commercial aircraft programs demand.

Finding a supplier with both the technical capability and the cultural alignment to function as a true partner — not just a vendor — was essential.

The Solution

EPSP manufactures precision components supporting Triumph’s actuation systems work on the 737 MAX program.

EPSP’s approach to supporting Triumph includes:

• AS9100-certified quality management with NADCAP accreditation for special processes, meeting the full quality requirements of commercial and defense aerospace programs
• Ultra-precision CNC machining holding tolerances to ±0.0001 inches, using Swiss-type lathes, CMMs, optical comparators, and concentricity indicators
• Full component traceability through a modern ERP system, supporting the documentation and audit requirements of regulated aerospace programs
• Flexible production scheduling, enabling EPSP to respond to shifts in demand without disrupting quality or on-time delivery
• Deep aerospace program experience, built over 80 years of manufacturing for the most demanding aerospace and defense environments

The relationship with Triumph is built on a foundation that predates the formal partnership — EPSP’s history of reliable performance with Honeywell made the handoff smooth and the ramp-up fast when Triumph took over the program.

The Results

EPSP has delivered consistent, measurable performance throughout the Triumph relationship.

Key outcomes include:

• Successful transition from a Honeywell-originated program with zero supply disruption
• Delivery performance maintained in the low 90th percentile
• Sustained quality compliance supporting the rigorous standards of the 737 MAX program
• Ongoing annual business growth reflecting Triumph’s confidence in EPSP as a long-term partner

The EPSP Difference

Aerospace programs don’t start over every few years — they evolve. EPSP understands this better than most. When Triumph acquired the production line that EPSP had supported through Honeywell, there was no learning curve, no quality risk, and no disruption to the program. That continuity is a direct result of EPSP’s investment in certifications, equipment, and systems that meet aerospace prime requirements from day one.

EPSP was founded in 1943 to manufacture components that had to work without fail under combat conditions. That same standard of mission-critical reliability drives every part we produce today — whether it’s destined for a military platform or a commercial aircraft carrying hundreds of passengers.

When the program requires a supplier that can be trusted across decades, EPSP delivers.