Mission-Critical Connection

Connectors

Qualified aerospace and military connectors providing reliable, environmentally sealed electrical connections.

MIL-DTL-38999Key Specification
IP67+Ingress Protection
EN3646 & MILStandards Held
24-HourDespatch Available
Connectors

Connectors

ISG supplies a broad range of qualified circular, rectangular and RF connectors to MIL-SPEC and ARINC standards for aerospace, defence and high-reliability industrial applications. Our connector portfolio includes MIL-DTL-38999 Series III and IV, MIL-DTL-26482, MIL-DTL-5015, ARINC 600 and M83723 series, covering shell sizes from 9 to 51 with insert arrangements accommodating power, signal, coaxial and fibre optic contacts.

All connectors are procured from approved manufacturers with full first-article test (FAT) documentation, lot acceptance test (LAT) reports and certificate of conformance (CoC) packages. ISG supports connector selection, backshell compatibility assessment and contact crimp tooling specification as part of our technical support service for new wiring harness design projects.

  • MIL-DTL-38999 Series III/IV, MIL-DTL-5015, MIL-DTL-26482
  • ARINC 600 and M83723 series available
  • Shell sizes 9–51 with diverse insert arrangements
  • Power, signal, coaxial and fibre optic contacts
  • Environmental sealing to MIL-STD-1344 Method 1002
  • Full FAT, LAT and CoC documentation packages
  • EMI backshell compatibility assessment service
  • Cadmium, zinc-nickel and nickel plating options

via Selwyn Electronics

An extended connector range through our newest group member

Selwyn Electronics joined the Interconnect Solutions Group in 2025, bringing with them over 40 years of experience as a specialist connector and cable assembly supplier. Where the ISG connector range focuses on high-reliability aerospace and military specifications, Selwyn extends our reach into the commercial and industrial connector market — offering a complementary range that covers everyday connectivity requirements alongside specialist applications.

Their waterproof connector range is one of the broadest available from a UK distributor, with over 2,000 variations of IP67 and IP68 rated circular connectors available alongside waterproof versions of RJ45, USB, HDMI and D-sub formats — supplied in Bayonet, Screwlock and Push Lock configurations. This makes Selwyn particularly well suited to applications in marine, outdoor industrial and renewables environments.

Selwyn also operate a cable assembly design and manufacturing service from facilities in both the UK and China, with on-site CAD capability for bespoke designs. Whether a standard harness or a fully custom solution, their engineering team can support from specification through to delivery.

Browse the full Selwyn range at selwyn.co.uk ↗

What We Supply

Circular Connectors

MIL-DTL-38999, MIL-DTL-26482 and EN-series circular connectors for aerospace, defence and industrial applications.

D-Sub Connectors

Standard and filtered D-Sub connectors — 9, 15, 25, 37 and 50-way with solder, PCB and crimp contact variants.

Rectangular Connectors

MIL-DTL-83527 and COTS rectangular connectors for control panel and enclosure wiring in defence and industrial systems.

PCB Connectors

Board-mount and wire-to-board connectors in standard pitches for electronics assembly and module interconnection.

Key Capabilities

Shell Sizes
9 – 51
Sealing
Per MIL-STD-1344 Method 1002
Plating Options
Cadmium, Zinc-Nickel, Nickel
Key Standards
MIL-DTL-38999 / MIL-DTL-5015 / MIL-DTL-26482

Industries Served

Available From Our Companies

Enquire About Connectors

Speak with our technical team about your specific requirements. We support new design projects, approved vendor qualification and volume supply agreements.

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