HSM Aero provide industry-leading manufacturing expertise, best practices and innovative solutions from our abundantly equipped facility in Letchworth.

HSM Aero: Passion Precision Performance

Precision Component Machining


We offer:

  • 3 and 5 Axis Precision Component Machining
  • Matsuura Pallet loading 5 Axis Machining
  • Y Axis Precision Turning with live tooling turret
  • Sliding Head CNC Turning with bar feed
  • Fully Equipped Toolroom
  • Reverse Engineering/Manufacture from Model or Drawing
  • Post treatment Management

Precision Sheet Metal Work & Fabrication


We offer:

  • Fiber Laser Technology 1500 x 3000mm Capacity
  • 6 Axis Brake Press up to 4000mm long
  • CAA Approved Coded Welding
  • Precision Punch Press
  • Post treatment Management

Chemical Conversion Plating

  • Alocrom 1200 to MIL-DTL-5541F and DEF STAN 03/18 (Classes 1A & 3)
  • Iridite NCP to MIL-DTL-81706 Class 3

Assembly Work

HSM Aero has a dedicated Assembly Area for the completion of small assemblies and sub-assembly work. Whether the simple installation of threaded inserts, more extensive mechanical sub-assembly work, kitting or full product supply, our team of experienced engineers ensure high levels of quality, reliability and consistency for all assembly projects.

Resources / Services

  • Key Account Management supported by a fully integrated ERP (Mie-Trak Pro) system.
  • End to End Project Management including reverse engineering, material sourcing and treatment management services.
  • Engineering Data Management supported by PowerMILL, PowerSHAPE, Creo ProE & Metalmation software packages.
  • Fully Equipped Inspection Lab including 3 x CMMs utilising PC DMIS software
  • Inventory Management and Control with fully traceable, bar coded material for discrete orders and Jit / KanBan deliveries.
  • Expedited \ AoG Services.
  • FAIRs supplied using Visual FAIR® Software to AS9102 \ TS16949


Quality is regarded as the responsibility of all. Quality methods are deployed throughout the factory using 5 Whys, 6 Sigma, 7 Wastes and Lean Manufacturing principles.

  • AS9100D Cert
  • Quality Policy
  • Cyber Essentials Plus
  • CAA Approved Coded Welding to DEF STAN 03-34 & 08-39
  • Fully equipped, temperature controlled inspection area utilising the latest CMM technology.
  • First Article Inspection Reports to AS9102/TS16969
  • PPAP Submissions

Contact us

For all customer service enquiries, please contact our Customer First Team.

Aerospace Manufacturing Centre
Campus 5, Letchworth
Herts SG6 2JF

T: 01462 688030

E: info@hsm.aero

Find us on Google Maps

Please direct all sales enquiries to sales@hsm.aero or alternatively complete the form below and a member of our team will respond within 24 hours.

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