LeFiell is a Los Angeles, California-based business that was founded in 1930 and has become a global leader in the design and manufacturing of metallic tubular parts and assemblies for the aerospace industry.  LeFiell provides the best value design and manufacturing solutions to a global industry.  Our customers include leading manufacturers around the world including Aerojet Rocketdyne, Airbus, Boeing, Mitsubishi Heavy Industries, Kawasaki Heavy Industries, Raytheon-Pratt & Whitney, and more.  

As a valued supplier to the leading aerospace companies of the world LeFiell maintains a world-class Quality System.  Please see our certifications:

Special Process Approvals:  

NADCAP Heat Treating Scope of Approvals:

  • Steels, Titanium, Nickel, and Cobalt Alloys
  • Aluminum Alloys
  • Vacuum Heat Treating
  • Hardness and Conductivity Testing
  • Heat Treating Pyrometry

Boeing Scope of Approvals:

  • The Boeing Company D1-4426 Process Approvals for LeFiell Manufacturing Company (BE10031352)
  • Quality System (QMS)
  • BAC 5602 Heat Treat of Aluminum Alloys
  • BAC 5619 Heat Treat of Corrosion Resistant Steels
  • BAC 5424 Magnetic Particle Inspection
  • BSS 7040 Magnetic Particle Inspection
  • BAC 5423 Penetrant Inspection
  • BSS 7039 Liquid Penetrant Inspection
  • ASTM-E-1417 Penetrant Inspection
  • BAC 5946 Temper Inspection of Non-ferrous Alloys – Conductivity Method including BAC 5651
  • ASTM E18 Standard Test Methods for Rockwell Hardness of Metallic Materials
  • NAS 410 NDI Personnel Certification Level 3 Magnetic Particle Inspection
  • NAS 410 NDI Personnel Certification Level 3 Penetrant Inspection
  • HP6-13 Penetrant Inspection – Fluorescent (QPL)