Now known as PCC Aerostructures Auburn, the kitting, assembly, and integration center originally formed through the 1999 merger of Bumstead Manufacturing, Inc. (founded in 1966) and Hansen Machine Corporation (founded in 1973) to become Primus International. During that pivotal year when Primus took flight, Bumstead Manufacturing was also awarded Boeing Supplier of the Year.

After Primus International was acquired by Precision Castparts Corp., Primus Auburn, GCM North American Aerospace and Compass Aerospace Northwest all merged to become PCC Aerostructures Auburn.

The site is a center of excellence for hard metal machining and door assembly. Precision Castparts Corp. acquired Primus International in August, 2011

PCC Aerostructures Auburn Plant


  • High Speed Machining
    • 3, 4, & 5-Axis Medium/Complex Aluminum and Hard Metal Machining up to 59 x 55 x 55 in (1,498 x 1,397 x 1,397 mm)
    • Medium/Complex Structural & Mechanical Assembly; including Flight Safety Critical Parts
    • High Speed Multi-Pallet Machining Cells
  • Overhaul Capabilities for Complex Flight Safety Critical Assemblies
  • Long Bed Machining up to 200 inches in length
  • Kitting and Integration
  • Experts in Precison Sheet Metal Components and Extruded Products
  • Global Supply Chain Management
  • Complete In-House Tooling Cell Vertical Integration Assembly Cell

Carriage Assembly

Products & Services

photo of overwing exit door

  • Entry and Exit Door Assemblies
  • Flap Supports & Carriages
  • Engine Hanger Links
  • Titanium Wing-to-Body Joint Fittings
  • Titanium Ribs (Flap)
  • Flap Tracks under 60”
  • Auxiliary Tracks
  • APU Inlets
  • Titanium Shear Ties / Stanchions / Splice Plates
  • Titanium and Nickel Links
  • Actuator and Mechanism Assemblies
  • Handle Assemblies

Experts in forming sheet and extruded parts

  • Leading Edge Torque Arms
  • Cable Drums
  • Track and Beam Assemblies
  • Mechanism Assemblies
  • Krueger Flaps



701 Milwaukee Ave N
Algona, WA 98001

Phone: 253-876-1500

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