Attewell Limited is a member of Hampson
Aerospace, an operating division of Hampson
Industries PLC, a publicly quoted group on the
London Stock Exchange. The Group comprises
fourteen technology-driven manufacturing
companies serving the international aerospace,
defence, automotive and specialist engineering
industries.
Hampson Aerospace provides integrated value added
supply-chain solutions to many of the
world’s leading aerostructure and gas-turbine
manufacturers with a range of system
components and airframe fabrications for
commercial and military aircraft.
Attewell has built an excellent reputation for
supplying products on time, at the right quality
and for providing value for money.
A flexible workforce, supported by sound
engineering management, ensures that the
most cost-effective solution is employed in the
manufacture of customers’ products.
A dedicated customer services department
provides a valuable communications link from
the time of the initial enquiry to after the
delivery has been made.
The company’s aim is to provide a world-class
service and, with its long-term relationship with
aerospace, Attewell has developed a blue chip
international customer base. This includes:
Airbus; Aircelle Safran; Agusta Westland; BAE
Systems (Green status supplier); Boeing (Silver
status supplier); Bombardier Aerospace (Belfast
and Montreal, Canada); GKN Aerospace;
Goodrich Aerospace, Messier Dowty, Smiths
Aerospace; Spirit AeroSystems Inc., USA;
Raytheon USA; and, through USA sister
companies, Lockheed Martin, Northrop
Grumman, Vought and many more…

Cost-effective assembly solutions
for aerospace and industrial applications.
Solid and peelable laminated shims, packers, tapers and spacers, provide assembly
solutions in the manufacture of aerostructures and high-precision industrial equipment.

• Supplies to OEMs’ on three continents
• Manufactures own materials and tooling
• Holds all major aerospace and industry
related approvals
• Quality levels exceed 99.9%, 100% OTD
to Boeing/Spirit
• Fully laminated sheet materials, solid shims
and edge bonded shims
• Sister shim companies in Pennsylvania and
California, USA
• Over 65 years of exemplary service to the
aerospace industry
• Located 10 minutes from London
Heathrow Airport

Quality
Attewell is a quality-driven organisation focused on
a programme of continuous improvement across
every company activity. The quality and
environmental system (Q & EMS) demonstrates the
company’s commitment to meeting individual
customer’s specifications and internationally
recognised standards.
Attewell has been assessed to:
AS/EN 9100:2001
BS EN ISO 9001:2000
BS EN ISO 14001:2004 (environmental)
Attewell holds approvals from major aerospace
customers for the following machining processes:
• CNC milling: max. component size
914mm x 381mm (36" x 15")
• CNC turning: max. dia. 406mm (16")
• CNC punch pressing: component size
up to 102mm x 204mm (4" x 8")
• CNC routing: bed working area:
3099mm x 1537mm (122" x 60.5")
• Photo-chemical machining (PCM):
standard sheet 450mm x 300mm (18" x 12")
• Conventional press work: (up to 40 tonnes)
Customer Service
All employees have undergone training to respond
quickly to customers’ needs. It is recognised by all
employees that there is an obligation to customers
to provide a faultless service and to maintain a
flexible approach to many varying customer
requirements.
Cost-effective assembly solutions
for aerospace and industrial applications.
Solid and peelable laminated shims, packers, tapers and spacers, provide assembly
solutions in the manufacture of aerostructures and high-precision industrial equipment.

Laminated Peelable Aerospace Shims
Attewell specialises in the manufacture and supply
of laminated shim materials and components for
achieving close tolerance dimensions on complex
aerostructures and engineering assemblies. Using
foil materials from 0.025mm (0.001") to 0.1mm
(0.004") the company has perfected a process of
bonding multiple layers together under heat and
pressure to produce a strong and rigid structure that
functions as a solid but may be reduced to the
precise thickness by peeling off layers.
Conversion Capabilities
Laminated and Solid Packers, Spacers
and Tapers
Attewell produces solid packers and spacers in a
similar way to those manufactured from laminated
stock, using press or machine processes. An infinite
variety of shapes can be produced dedicated to a
specific customer requirement. A full testing and
protective treatment service is offered on all
components, using approved sources.
Tapered packers
Tapered shims are designed to cope with angles and
curves and ensure a close-tolerance assembly
whenever relatively large spaces are encountered
between mating parts.
Shapes
Components are manufactured from customers’
drawings using an extensive range of in-house
machine tools and equipment. The choice of
process will be determined by the nature of the
product and the method that offers the best
economic solution or speed of production.
The company’s CNC Punch pressing facilities
provides a versatile and rapid service.
Precision with integrity…

Photo-Chemical Machining
The combination of modern computer-aided
design and a photo-sensitive mask enables
Attewell to produce highly-accurate and
intricate components used in a very wide range
of systems applications. The technique is
particularly attractive for use in electronics,
filtration, aerospace and defence.
Minute holes and radii, at a pitch that would
make conventional processes uneconomic, can
be produced without inducing burrs or stresses
in the material. In addition, to gain maximum
yield from a standard sheet 450mm x 300mm
(18" x 12") and depending on size, a large
number of components can be produced
simultaneously. The best use of the material
can also be obtained by intelligent ‘nesting’ of
similar parts.
Tooling costs are low, resulting in cost-effective
solutions for prototype development of thin
sheet details. A wide range of metals can be
etched from stainless steel to brass 0.127mm
(0.005") to 1.6mm (0.063") thick.
Forming
Attewell has a range of equipment to carry out
forming of a number of etched products.
Surface treatments
Attewell has partnerships with a number of
treatment houses catering for aerospace or
commercial applications.
Typical products manufactured using
Photo-Chemical Machining
• Shims • Valve Plates
• RFI Screening Products • Heat Sinks
• Lead Frames • Solder Paste Masks
• Contacts • Watch Parts
• Screens • Encoder Discs
• Radial & Axial Springs • Filtration Products
• Iris Leaves and Graticules
…and many more

Attewell Limited
4 Southbridge Way, Southall,
Middlesex UB2 4BY, UK
Tele: +44 (0) 870 777 4210
Fax: +44 (0) 870 777 4211
Email: sales@hampsongroup.com
Web: www.attewell.co.uk