Case Study: Supporting Honeywell Aerospace Systems for Over 40 Years

For more than four decades, Extreme Precision Screw Products (EPSP) has served as a trusted precision manufacturing partner to Honeywell Aerospace — one of the world’s leading producers of aerospace engines, avionics, and aircraft systems. This relationship reflects EPSP’s ability to deliver mission-critical components with consistent quality, long-term program stability, and a continuous improvement mindset that meets the demands of both commercial and military aerospace production.

The Challenge

Aerospace and defense manufacturers require suppliers capable of consistently holding extremely tight specifications across long-duration programs — while remaining responsive to changing production schedules and cost pressures. Components used in flight-critical systems must perform flawlessly under extreme operating conditions. Even minor inconsistencies present unacceptable operational risk.

Honeywell needed a long-term manufacturing partner with proven aerospace quality credentials, dependable delivery performance, and the operational foundation to support both current production and future program growth.

The Solution

EPSP manufactures precision components for Honeywell aerospace systems, including parts for engine and brake system applications. A key example is a fluid flow restrictor used in critical aerospace systems — a component verified through air and water simulation testing to confirm performance and reliability under real operating conditions.

EPSP’s approach combines:

• AS9100-certified quality management, with NADCAP accreditation for special processes, ensuring compliance with the highest aerospace and defense manufacturing standards
• Ultra-precision CNC machining with tolerances held to ±0.0001 inches using Swiss-type lathes, CMMs, optical comparators, and concentricity indicators
• Advanced materials capability including titanium, Inconel, stainless steel, and other high-performance alloys used in demanding aerospace environments
• A modern ERP system supporting full traceability, program management, and schedule visibility
• Flexible production planning, enabling EPSP to adapt to shifting delivery requirements without compromising quality or lead times

EPSP works closely with Honeywell program teams to maintain alignment on specifications, schedule changes, and long-term production planning — functioning as an integrated manufacturing partner rather than a transactional vendor.

The Results

Over the course of the relationship, EPSP has delivered consistent, measurable performance that has strengthened and grown the partnership year over year.

Key outcomes include:

• Approximately 40 years of continuous supplier relationship with Honeywell Aerospace
• Consistent annual business growth of 4–10%, reflecting sustained program confidence
• Delivery performance in the low 90th percentile, maintained across shifting production schedules
• Previously ranked among the Top 10 suppliers for Honeywell’s Rocky Mount facility
• Zero program disruptions resulting from quality escapes or supply failures

This long-standing relationship demonstrates EPSP’s ability to function as a reliable, low-risk manufacturing partner on complex, multi-decade aerospace programs.

The EPSP Difference

EPSP was founded in 1943 to manufacture firing pins for .50-caliber machine guns during World War II — components that had to work without fail in combat. That standard of mission-critical reliability has guided every part we’ve shipped since.

Today, EPSP continues to invest in equipment, infrastructure, and quality systems to support demanding aerospace and defense manufacturing environments. Our AS9100 and NADCAP certifications, combined with over 80 years of precision manufacturing experience, position us to meet the rigorous standards required by the world’s leading aerospace and defense primes.

Whether supporting long-running production programs or responding to urgent capacity needs, EPSP delivers the precision, reliability, and partnership that mission-critical aerospace programs demand.