AERO MS27484T14F35SA
- MIL-DTL-38999 Series II RFI grounding plug; three-point bayonet; integral grounding spring fingers
- Shell Size 14; insert arrangement 14-35; 37 size #20 crimp socket contacts; polarizing position F-A
- Class T: aluminum alloy shell; electroless nickel finish; 500-hour salt spray rated
- Operating temperature −65°C to +175°C; IP67 environmental sealing; fluid resistant
- EMI/RFI shielding 45dB attenuation 100MHz–10GHz via integral grounding spring
In aerospace and defense systems, reliable signal connectivity is critical for mission success. The AERO MS27484T14F35SA is a compact circular connector designed to meet the rigorous demands of avionics, satellite platforms, and space applications where space is at a premium. Its robust construction ensures uninterrupted performance even under extreme vibration, temperature fluctuations, and exposure to corrosive environments.
This connector features a 16-position configuration that provides essential signal routing capabilities in a small form factor, making it ideal for dense avionics systems where every millimeter counts. The bayonet coupling mechanism provides quick, secure mating with audible confirmation, while the crimp termination method ensures excellent electrical continuity and mechanical stability. Built to military specifications, it undergoes rigorous testing to withstand the harshest operational conditions encountered in aerospace and defense missions.
Related Products For Your Business
The AERO MS27484T14F35SA is a Shell Size 14, MIL-DTL-38999 Series II RFI grounding straight plug with insert arrangement 14-35 for 37 size #20 crimp socket contacts in polarizing position F-A. Its defining feature over the standard MS27473 plug family is the integral grounding spring — a 360° conductive finger array that bonds the cable shield directly to the connector shell at the mating interface, delivering 45dB EMI attenuation from 100MHz to 10GHz without an external shield termination clamp. Class T construction (aluminum, electroless nickel) provides 500-hour salt spray resistance across −65°C to +175°C, with IP67 environmental sealing rated for the full range of aviation hydraulic fluids and fuels.
For comparison with related MIL-DTL-38999 Series II connectors in our inventory:
| Product | Shell | Contacts | Type | Key Differentiator |
|---|---|---|---|---|
| MS27484T14F35SA | 14 | 37 | RFI Grounding Plug | Integral 360° grounding spring |
| MS27473T22F35P | 22 | 100 | Standard Plug | High contact count, no grounding spring |
| MS27499E14F35PB | 14 | 37 | Standard Plug | Class E cadmium finish variant |
Military-Grade Reliability & Performance
Built to MIL-DTL-38999 Revision N under Aero-Electric’s AS9100:2016-certified manufacturing program, the MS27484T14F35SA passes the full Series II qualification suite including 500-hour salt spray, thermal shock across −65°C to +175°C, mechanical shock and vibration per MIL-STD-810, and 1,500 VRMS dielectric withstanding voltage. The RFI grounding spring provides a consistent, low-resistance shell-to-shell ground path at every mating, eliminating the impedance discontinuity that occurs when cable shields are terminated only at the backshell rather than at the connector interface. This is particularly critical in avionics applications where MIL-STD-461 radiated emissions limits are tight and shield transfer impedance directly determines system EMC compliance margins.
Supply Chain & Quality Assurance
The MS27484T14F35SA is manufactured by Aero-Electric Connector, Inc. (Conesys), an AS9100:2016-certified, QPL-qualified connector manufacturer. Cross-sourcing is available from Amphenol Aerospace (JTG06R equivalent), TE Connectivity Deutsch, Souriau, and Glenair — all sharing the same insert arrangement, contact tooling, and mating receptacle compatibility. Every shipment includes certificates of conformance, lot traveler records, and incoming inspection documentation. Inventory is stored in ESD-compliant and MSL-rated packaging with full date code traceability.
Selection Guide & Application Notes
The MS27484T14F35SA is the RFI grounding, socket-contact, Shell Size 14, insert 35, position F-A variant. Specify MS27484T14F35PA for the pin-contact version when mating receptacle contact gender requires reversal. Mating receptacles in Shell Size 14, insert 35, position F include MS27472T14F35P (front wall mount) and MS27497T14F35P (jam nut). If RFI grounding is not required and circuit density is the only driver, the MS27473 (standard ungrounded plug) offers the same insert arrangements at slightly lower cost. A SAE-AS85049 backshell is required; for applications where the grounding spring alone is insufficient — such as below 100MHz or in very high-field environments — add an EMI backshell with dedicated cable shield clamp for maximum shielding continuity.
FAQ
What makes MS27484 different from MS27473 in the same Series II family?
The MS27484 is the RFI grounding plug variant — it includes an integral grounding spring that creates a 360° low-impedance bond between the mated shell pair at the connector interface. The MS27473 is the standard (ungrounded) plug. Use MS27484 wherever cable shield continuity through the connector junction is required for EMC compliance.
How many contacts does the MS27484T14F35SA support?
37 size #20 crimp socket contacts per insert arrangement 14-35, rated for 500 mating cycles per SAE-AS39029. The socket “S” suffix means this plug loads socket contacts and mates with a receptacle loaded with pin contacts.
Which receptacles mate with the MS27484T14F35SA?
Any MIL-DTL-38999 Series II receptacle in Shell Size 14, insert 35, polarizing position F — including MS27472T14F35P (front wall mount), MS27497T14F35P (jam nut), and equivalents from Amphenol, Souriau, TE Connectivity, and Glenair.
What does the “A” suffix at the end of the part number indicate?
The “A” suffix designates the keying sub-variant (polarizing position A within the F keying family). This ensures the plug can only mate with a correspondingly keyed receptacle, preventing mis-mating with adjacent connectors of the same shell size and insert arrangement in high-density avionics panels.
Is a backshell required, and does the grounding spring replace it?
The grounding spring establishes shell-to-shell EMI bonding at the mating face — it does not replace the backshell. A SAE-AS85049 strain relief backshell is still mandatory for cable termination. For maximum shielding below 100MHz or in severe EMI environments, supplement the grounding spring with an EMI backshell that independently clamps the cable shield braid.
What is the operating temperature limit and how does Class T compare to alternatives?
Class T (electroless nickel) is rated −65°C to +175°C with 500-hour salt spray resistance. For applications requiring +200°C capability, Class F (alternate electroless nickel process) or Class W (OD cadmium over nickel) variants are available in the same Shell Size 14, insert 35 configuration with identical mating compatibility.
