MIL-DTL-26500 Connectors

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Miniature Cylindrical Connectors for Aerospace, Military & Industrial Systems

Elimec USA supplies MIL-DTL-26500 connectors, designed to meet the needs of high-reliability applications across commercial, aerospace, and military platforms. Available in both bayonet and threaded coupling styles, these connectors offer a rugged, compact solution with excellent sealing and mechanical integrity—ideal for environments requiring dependable electrical performance under harsh conditions.

Fully intermateable with MIL-DTL-83723 Series III counterparts (except shell size 8, threaded), MIL-DTL-26500 connectors provide a convenient and reliable solution for systems using both bayonet and threaded couplings.

Key Features & Benefits

• Versatile Coupling Options
  Available in both bayonet (quick-connect) and threaded (secure-lock) configurations to suit a wide range of applications and      environmental requirements.
• Flexible Mounting Styles
  Offered in wall mount receptacles, jam nut receptacles with      integrated O-ring seals (rear “D” hole panel mounting), and straight      plugs for streamlined system integration.
• Reliable Contact Options
  Qualified to 21 insert arrangements per MIL-STD-1554, supporting 3 to 57 contacts in sizes 20, 16, and 12. Compatible with wire gauges from 24 AWG to 12 AWG.
• Effective Environmental Sealing
  Multi-layer sealing system includes:
  • Compression-sealed front insulators to prevent moisture ingress
  • Triple wire sealing at the rear of each contact cavity
  • Dynamic O-ring seal between plug and receptacle for added protection
• Insert & Shell Polarization
  • Insert clocking positions (1–5) help avoid mismating of identical       layouts (except shell size 8)
  • Alternate key/keyway designs prevent cross-mating of adjacent connectors
• Durable Construction
  Only aluminum shells with anodic coating (Class R) or stainless steel      shells (Class E*) available—ensuring resistance to wear, corrosion, and extreme environments.
• Superior Contact Stability
  Front-release crimp contacts use a beryllium-copper retaining clip fully encased in a rugged dielectric insert—protecting against vibration and insertion damage.
• Closed-Entry Socket Contacts
  Provide secure mating and alignment, even under blind or repetitive insertion conditions.

Performance Specifications

• Operating Temperature Range
  • Class R & E: –55°C to +200°C (–67°F to +392°F)
• Corrosion Resistance
  • Both classes withstand 48-hour salt spray exposure
• Environmental Seal
  • Meets MIL-DTL-26500 altitude immersion test (wired, mated, with accessories)
• Fluid Resistance
      Withstands immersion in:
  • MIL-PRF-5606 (hydraulic fluid)
  • MIL-PRF-23699 / MIL-PRF-7808 (lubricating oils)
  • MIL-DTL-5624 (JP-5 jet fuel)
  • Glycol-based solutions
• Durability
  • Bayonet Coupling: 500 mating cycles
  • Threaded Coupling: 200 mating cycles
• Shell-to-Shell Conductivity
  • Class R: Non-conductive
  • Class E: ≤ 200 millivolts max potential drop

Shock & Vibration Performance

• Shock
  • 100 G, half-sine wave, 6 ms duration in all three axes
• Vibration
  • Per EIA-364, Method 28
  • Tested at both –55°C and +200°C

When reliability, space savings, and ruggedness matter—choose MIL-DTL-26500.
Elimec USA provides expert guidance and fast delivery for your connector needs. Whether for aerospace, defense, or industrial systems, we’re here to help you find the right connector.

📞 Contact Us to discuss technical specs or explore custom solutions.