The Coupler,directional, cataloged under National Stock Number 5985-00-327-3108, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-327-3108 |
| Primary Part Number | 2534837 |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Unpackaged Unit Weight | 8.000 OUNCES NOMINAL OZ |
| Usage Design | MAIN LINE AND SECONDARY LINE TERMINAL FITTING |
| Power Loss in Decibels | 20.0 |
| Identifying Number | TERMINAL FITTING M3922/53-3; M3922/59-8 |
| Design Type | BIDIRECTIONAL |
| Unit Type | WAVEGUIDE AND COAXIAL LINE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL C — Remove/Demil Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2534837 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 90XT259-1K | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| B1135 | 5/9 Secondary reference Atlantic Microwave Corporation Div Cobham Electronic Systems |
| 2534837 | 5/9 Secondary reference Astro Microwave Inc |
NSN 5985-00-327-3108 is a Coupler,directional, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-327-3108 has 2 manufacturer part numbers on file: 2534837 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 90XT259-1K (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc).
2 possible matches (shared part number, not a government interchangeability claim): 7025-01-543-5715, 5306-01-699-7823. Verify interchangeability with system specifications before substitution.
Key specifications for 2534837: Overall Height: 2.115 INCHES MINIMUM AND 2.135 INCHES MAXIMUM IN; FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Unpackaged Unit Weight: 8.000 OUNCES NOMINAL OZ; Usage Design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING. 7 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5985-00-327-3108 has DEMIL Code C. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.