Overview
The Amphenol MS3106A 28-12P-KR is a military-grade circular connector plug meeting MIL-C-5015 specifications. This 26-position connector features male solder cup contacts and is supplied with the MS3057-16A threaded coupling for reliable, tool-free coupling and decoupling. The MS3106A series is widely used in aerospace, defense, telecommunications, and industrial equipment where dependable electrical connections and frequent mating cycles are critical.
Key Features
- MIL-C-5015 military specification compliance
- 26-position plug with male solder cup contacts
- MS3057-16A threaded coupling included for secure mating
- Copper alloy shell with silver-plated contacts for corrosion resistance
- Designed for high-reliability aerospace and industrial applications
- Repetitive mating cycles without contact degradation
Technical Specifications
- Connector Type: Circular Plug (Straight)
- Shell Size: 28
- Number of Positions: 26
- Contact Type: Solder Cup
- Contact Gender: Male Pins
- Contact Material: Copper with Silver Plating
- Shell Material: Copper Alloy
- Coupling Style: Threaded (MS3057-16A)
- Standard: MIL-C-5015
- Operating Temperature Range: –55°C to +85°C (typical)
- Insulation Resistance: ≥1,000 MΩ at 500 VDC
- Dielectric Strength: 1,500 VAC (typical)
Typical Applications
- Aerospace and avionics equipment interconnections
- Military ground support and weapons systems
- High-reliability industrial control systems
- Telecommunications and signal transmission
- Test and measurement equipment
- Environmental monitoring and data acquisition systems
Compatibility & Replacements
Compatible With
- All MS3106A-28 series receptacles (MS3102A-28 plug body)
- Standard MIL-C-5015 mating equipment
- Equipment designed for size-28 circular connectors
- Aeronautical and defense-rated systems
Replaces / Drop-In Replacement For
- Earlier Amphenol MS3106A 28-12P variants without coupling
- Compatible receptacle mate: MS3102A-28-21S and other MS3102A-28 configurations
Works With
- MS3057-16A threaded coupling (included)
- MIL-C-5015 standard-compliant wiring harnesses
- Cable clamps and strain relief boots for size-28 connectors
- Solder-termination cable assemblies








