Sigma has over 40 years of experience supplying OEM and Tier 1 companies with a full range of aerospace sheet & machined detail parts as single items or in kit form. Whether formed engine brackets or complex machined products for high-temperature applications, we supply products to both civil and military platforms.

Every power & system sheet and machined detail is potentially exposed to high-pressure and high-temperature environments. Therefore, we cater for all material requirements and manufacture details using aluminium, Inconel & Nimonic, titanium and stainless steels.

Our machining capabilities include CNC Routers and CNC Milling & Turning centres with 3, 4 and 5-axis. From small bespoke spares to high production volumes, we utilise our engineering experience to produce a complex range of aerospace detail parts to meet the needs of our customers.

In addition, all sheet & machined details are supported by our Nadcap approved in-house inspection and treatment services.

Sheet Details

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

Aerospace Detail Parts


  • 250 Tonne Dual Action Hydraulic Presses
  • Cold Forming
  • CNC Router 3m x 1.5m
  • Multiple Press Brakes
  • Stretchers & Shrinkers
  • Aerospace Detail Parts
  • Aerospace Detail Parts
  • Aerospace Detail Parts


  • Brackets
  • C-Class Parts
  • Clips and Cleats

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.

Aerospace Detail Parts

CNC Turning

  • CNC Lathes, Chuck or Bar Fed
  • Max Chuck diameter 10″ (250mm)
  • Live tooling with C and Y axis
  • Sliding head machines for higher volume production
  • Tolerances to +/- 0,005mm (.012mm)

CNC Milling

  • Upto 5 axis capability
  • Max size 1000mm x 1500mm
  • Pallet change
  • Tolerances to +/- 0,005mm
  • Vertical and Horizontal machining centres
  • Aerospace Detail Parts
  • Aerospace Detail Parts
  • Aerospace Detail Parts


  • Adaptors
  • Brackets
  • Bushes
  • Castings and Forgings
  • Ferrules
  • Flanges
  • Nipples
  • Nuts
  • Silver Plated AS Nuts
  • Thrust Wires

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.