Sigma uses precision-engineering technology to produce a range of airframe sheet & machined details to meet the scope of the complex specifications and strict requirements of our customers.

Sheet & machined detail parts are singular items that start the form of the airframe structure and its associated systems, such as fluid conveyance and a range of cleats, brackets, ribs, adaptors, end fitting and more.

With over 40 years of experience, we supply profiled sheet details and machined components to major OEM and Tier 1 companies. Our integrated supply chain and additional manufacturing footprint in China also allows us to offer customers low-cost solutions for all stages of the product life cycle.

In addition, we continue to invest in modern CAD/CAM and CNC machine tool technology to ensure that we maintain the highest standards of quality while also providing our customers with a competitive offering.

Sheet Details

Across the UK & China, we have comprehensive sheet detail forming and manufacturing capabilities.

Airframe Sheet & Machined Details


  • 250 Tonne Dual action Hydraulic Presses
  • Cold Forming
  • CNC Router 3m x 1.5m
  • Multiple press brakes
  • Stretchers & Shrinkers
  • Airframe Sheet & Machined Details
  • Airframe Sheet & Machined Details
  • Aerospace Detail Parts


  • Brackets
  • Cable Supports
  • C-Class
  • Deep Drawn Pressings
  • Direct Line Feed (DLF)
  • Fairings & Shrouds
  • Ribs & Intercostals
  • Top Hat Sections

Machined Details

We have over 55 CNC machining centres in the business with access to a broad network of approved suppliers for associated support and non-core special-process.

Airframe Sheet & Machined Details

CNC Turning

  • CNC lathes, chuck or bar fed
  • Live tooling with C and Y axes
  • Max chuck diameter 10″ (250mm)
  • Sliding head machines for higher volume production
  • Tolerances to +/- 0,005mm (.012mm)

CNC Milling

  • Upto 5 axis capability
  • Max size 1000 x 1500mm
  • Pallet change
  • Tolerances to +/- 0,005mm
  • Vertical and horizontal machining centres
  • Airframe Sheet & Machined Details
  • Airframe Sheet & Machined Details
  • Airframe Sheet & Machined Details


  • Adaptors
  • Brackets
  • Diffusers
  • End Fittings
  • Ferrules
  • Intakes
  • Plates
  • Ribs

Contact Sigma

For more information or to find out how Sigma can work with you to meet your sheet & machined detail requirements, please contact our sales team.