Interconnect Solutions Group

About Interconnect Solutions Group

Twelve specialist companies.
One unified group.

1987 Year Founded

35+ Years Experience

12 Group Companies

40+ Countries Served

FTSE 100 Parent Group

Part of Diploma PLC — FTSE 100

The Interconnect Solutions Group (ISG) brings together twelve specialist interconnect businesses across the UK, USA, Germany and the Czech Republic. Each has its own identity, customers and market — connected by a shared commitment to high-quality, high-performance product and the AS9100/AS9120 and ISO 9001 standards that underpin it.

We are not a generalist distributor. Every company in ISG has been built around deep expertise in specific interconnect product areas and the industries that depend on them. Our people understand the difference between a specification-compliant component and one that will simply fit — and that knowledge protects our customers' projects.

From value-add services built under full traceability control, to rapid connector supply for Formula 1 race weekends, to low-outgassing cable for LEO satellites — ISG businesses operate where precision and reliability are non-negotiable. Since 1987, the expertise we have built is reflected not only in our stock, but in how we apply it.

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12 Companies. Global Reach.

Our group operates from sites in the UK, USA, Germany and the Czech Republic, with distribution networks extending across France, Asia, Turkey and Poland — supplying customers in more than 40 countries.

35+ Years of Interconnect Expertise

The companies that form ISG bring more than three decades of supply experience to aerospace, defence, motorsport and medical programmes — including long-standing manufacturer relationships that take years to establish.

Part of Diploma PLC

ISG is a division of Diploma PLC, a FTSE 100 group focused on the distribution of essential technical products and services. Diploma's model is built around high-quality, value-added businesses serving markets where technical knowledge is critical — providing ISG with the stability and scale to support long-term programmes.

Technical DNA

Our specialists deliver complete interconnect solutions — understanding the systems those components serve, not just the parts themselves. From MIL-SPEC wire selection to space-grade low-outgassing compliance, our knowledge is what customers tell us makes the difference.

Our Group Companies

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Rayfast UK United Kingdom Rayfast USA United States Rayfast s.r.o. Czech Republic Sommer GmbH Germany LJR Electronics United States Cabletec United Kingdom Astro Industries United States Filcon Electronic Europe Selwyn Electronics United Kingdom CDM Inc. United States FC Lane Electronics United Kingdom Weald Electronics United Kingdom

Our Journey

From a single specialist distributor in Swindon in 1987 to twelve businesses spanning the UK, Europe and North America — ISG's growth has been driven by acquisitions of established specialists and long-term partnerships with leading manufacturers.

See our full history →

Approvals & Accreditations

Airbus Approved Boeing Approved ESA Registered NASA Registered DEF STAN MIL-SPEC IEC 60601 ECSS Qualified AS9100D ISO 9001

Technical Integrity

We don't compromise on specification. Every product we recommend is selected because we believe it is the right solution — not the easiest one. Our customers operate programmes in which a specification error carries serious operational and commercial consequences.

Responsive Supply

Same-day despatch is not a headline — it is our standard. We hold significant stock and respond quickly, because project delays carry real cost to our customers' programmes and reputations.

People First

ISG is built on long-standing customer relationships. Our specialists know their customers, applications and projects in detail. When you call us, you reach someone who understands the requirement and has the technical knowledge to address it.

More Than a Distributor

Precision Stocking.
Expert Support. Real Value-Add.

5,000+ high-quality products and 60,000+ individual SKUs held in stock across the group — backed by sector-specialist technical teams, pre-despatch value-add (cut, print, kit, spool) and stocking profiles built around your project.

Distribution Excellence

60,000+ SKUs Stocked Across the Group

Wire & cable, heat shrink tubing, connectors, sleeving and terminals — all held against routine call-off across our group companies, not sourced on demand. Sector specialists across every category support specification and selection.

60,000+ SKUs in Stock
Rapid Despatch
24-Hour Turnaround

60,000+ SKUs in stock

Technical Expertise

Expert Technical Support by Sector

Our technical specialists are trained through the ISG Technical Academy and focused on specific industry sectors — not generalist sales staff. From aerospace wire harness to Formula 1 loom specification, our team gives practical application-level guidance across 10 market sectors.

Sector Specialists
ISG Academy Trained
Application Guidance
10 Industry Sectors

10 specialist industry sectors served

Value-Add Manufacturing

Custom Value-Add Services

We can process materials to your exact production requirements before despatch. Cut-to-length, custom-printed, kitted and spooled to your specification — reducing handling at your facility and minimising scope for error in production.

Cable Cutting & Processing
Custom Marker Printing
Product Kitting
Custom Spooling

5 core value-add capabilities

Bespoke Stocking

Bespoke Stocking Programmes

We build stocking profiles around your project, rather than asking you to adapt to ours. Share your schedule, volumes and packaging requirements, and we'll hold inventory in the quantities you need, ready for call-off when production demands it.

Custom Stocking Profiles
JIT Inventory Management
Flexible Order Quantities
Priority Despatch

1,000+ global clients served

Why Choose ISG

Built for programmes where the specification has to hold.

Same-Day Despatch

Standard service on stocked product lines across wire, cable, connectors and harness components

AS9100 / AS9120 & ISO 9001

Quality management certified to aerospace and distribution standards across the group

50+ Years of Collective Experience

Group heritage extends back over five decades; ISG was formed in 1987 and has supplied aerospace, defence and motorsport ever since

Direct Specialist Contact

Every enquiry routed straight to a sector specialist — no call centre routing, no generalist scripts

Part of Diploma PLC (FTSE 100)

The financial stability of a major international group, supporting long-term programmes and supplier relationships

ISO 9001 Certified AS9100 / AS9120 Approved Diploma PLC Group Group heritage 50+ years 60,000+ SKUs in Stock

Explore Our Services

Call us: +44 (0) 1793 616700 · sales@rayfast.com

Industries We Serve

Precision solutions engineered for
the most demanding environments

Aerospace Division

Wire & Cable for
Commercial & Military Aviation

We offer a wide choice of wire and cable to meet the demands of the aerospace industry, along with associated routing and management products. Approved for the majority of today's commercial and military aircraft fleets.

Airbus Group and Boeing approved cable constructions
XLETFE, XLPE/XLPVDF and hybrid constructions available
Thin-wall technology — up to 50% weight reduction achievable
Temperature range: −65°C to +260°C
Full backshell, connector and harness component supply

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Flight Deck

Lightweight XLETFE and XLPE/XLPVDF cables for avionics. Airbus & Boeing approved.

Fuselage Harness

Multi-core harness for IFE, cabin lighting and passenger systems throughout the fuselage.

Engine Pylon Wiring

Fluid-resistant power cables rated to +260°C for engine control and fuel management.

Wing Structure

Thin-wall wire bundles — up to 50% weight reduction vs conventional cable.

Landing Gear Bay

Ruggedised harness assemblies rated for hydraulic fluid exposure and wide temperature swings.

Defence Division

Military-Grade Cables for
Air, Ground & Naval Platforms

Working closely with our suppliers' R&D programmes, we offer a comprehensive range of military-approved wire, cable and harness components for air, ground and marine defence applications — designed and approved for current and legacy MoD platforms.

Military specification (Mil-Spec) wire and cable
Ruggedised connectors and backshell systems
EMI/RFI shielding and protection solutions
Air, ground vehicle and naval platform supply
Full harness component supply for MoD projects

Explore Defence →

Engine Bay

High-temperature cables and connectors for power distribution in extreme conditions.

Cab & Command Systems

MIL-SPEC screened cables for comms, navigation and command with EMI-protected harness assemblies.

Command Body

Ruggedised multi-core harnesses for power and data throughout the rear command compartment.

Chassis & Drivetrain

Abrasion and fluid resistant cables for driveline control — designed for battlefield environments.

Motorsport Division

Race-Proven Components for
F1, WRC & Global Motorsport

Long-established supply relationships across Formula 1, WRC, Formula E, Sports and Touring Cars, MotoGP, Superbikes, NASCAR and IndyCar. Lightweight, high-performance components engineered for race-day reliability.

Formula 1 and WRC approved component supply
Deutsch Autosport connector franchise partner (TE Connectivity)
Lightweight wire and cable engineered for weight-critical race builds
Cable and hose protection sleeving solutions
Rapid prototyping and same-season turnaround

Explore Motorsport →

Front Wing & Aero

Ultra-lightweight wiring looms for front wing sensors, DRS actuation and aero load monitoring.

Suspension & Wheel

Flexible harness for wheel speed sensors, brake temp and suspension position monitoring.

Cockpit & Driver Systems

Screened, lightweight cables for steering wheel data, driver controls and safety systems.

Power Unit & ERS

High-temperature, low-weight cables for hybrid power management and ERS systems.

Marine Division

Electrical Solutions
Stem to Stern

Complete onboard interconnect coverage — wire and cable, connector systems and cable management. Our system-level solutions reduce installed weight, support low fire-hazard requirements and deliver dependable performance in the harshest marine environments.

International naval and commercial marine approvals
Waterproof and corrosion-resistant cable assemblies
Low fire hazard, low smoke zero halogen (LSOH) options
Weight-saving, ruggedised materials throughout
Complete cable management solutions onboard

Explore Marine →

Bridge & Superstructure

Screened data cable for navigation, radar and communications systems.

Bow Section

Sealed connectors and corrosion-resistant cable for bow thrusters and anchor systems.

Engine Room

High-current LSOH cable and power terminals for main propulsion and auxiliary generators.

Stern Systems

Sealed terminals and marine cable for steering gear, rudders and aft equipment.

Space Division

ESA & NASA Registered Products
for Space Applications

We supply a wide range of products for the space industry. Many carry ESA approval or NASA registration, with select products featuring low-outgassing properties — essential for vacuum environments where conventional materials would fail.

ESA-approved and NASA-registered products available
Low-outgassing cable and connector solutions
Extreme temperature performance across full range
Radiation-tolerant materials for orbital environments
Suitable for launch vehicles, satellites and ground systems

Explore Space →

ESA

& NASA Registered

Approved for launch,
in-orbit and ground-segment use

Medical Division

High-Reliability Solutions
for Medical Devices

From imaging and diagnostics to surgical robotics and patient monitoring — we supply precision interconnect components that meet the demanding regulatory requirements of the global medical device sector.

IEC 60601 compliant cable assemblies
Ultra-flexible, kink-resistant solutions for robotic surgery
Sterilisation-resistant materials and coatings
Full component traceability and quality dossiers
Biocompatible materials available on selected products

Explore Medical →

IEC

60601 Compliant

Precision components for
critical medical applications

Industrial Division

High-Performance Cable for
Heavy Industry & Automation

We supply high-performance wire, cable, control-system components and cable management accessories across industrial sectors — including heavy equipment, lighting and underground applications. Specified for durability and long service life.

High-performance wire and cable for industrial control
Advanced cable management systems and accessories
Industry-approved materials meeting key standards
Suitable for heavy equipment, automation and lighting
Weight-saving and ruggedised options available

Explore Industrial →

24/7

Industrial Reliability

Engineered for continuous
operation in heavy-duty applications

UAV Division

Interconnect Solutions for
Unmanned Aerial Vehicles

We supply lightweight, high-reliability interconnect for UAV and drone platforms — from small tactical systems to large MALE/HALE aircraft. Purpose-selected wire, connectors and harness protection engineered for the unique demands of unmanned flight.

Ultra-lightweight wire and cable for maximum endurance
Miniature connectors and micro-D solutions for compact avionics
EMI shielding for sensor and data link integrity
Vibration-resistant terminations for high-G environments
Temperature-rated materials from −55°C to +200°C

Explore UAV →

UAV

Unmanned Systems

Lightweight, reliable interconnect
for unmanned aerial platforms

Global Presence

Where We Operate

From our UK headquarters in Swindon, ISG operates from sites in England, the USA, Germany and the Czech Republic, supplying customers in more than 40 countries.

12Group Companies

4Operating Countries

10Industry Sectors

50+Years of Group Heritage

1,000+Global Clients

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Rayfast · Krempfast

Swindon, England

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Cabletec

Weston-super-Mare, England

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Selwyn Electronics

Swindon, England

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Rayfast USA

Indianapolis, Indiana

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LJR Electronics

Miamisburg, Ohio

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Astro

Dayton, Ohio

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Rayfast s.r.o.

Prague, Czech Republic

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Sommer GmbH

Stuttgart, Germany

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Filcon

Taufkirchen, Germany

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CDM Inc.

Turnersville, New Jersey

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FC Lane Electronics

Horsham, West Sussex

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Weald Electronics

West Sussex, England

Twelve specialist
businesses.
One unified group.

Twelve specialist companies.
One unified group.