The Coupler,directional, cataloged under National Stock Number 5985-00-646-5300, 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 Telephonics Corp/prd Instruments. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-646-5300 |
| Primary Part Number | 26371 |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Telephonics Corp/prd Instruments |
| Status | ACTIVE |
| Terminal Fitting Controlling Agency | JCENS |
| Usage Design | MAIN LINE AND SECONDARY LINE TERMINAL FITTING |
| Power Loss in Decibels | 40.0 |
| Identifying Number | TERMINAL FITTING TYPE NO. UG-21B/U; TYPE NO. UG-418A/U A |
| Design Type | BIDIRECTIONAL |
| Radio Frequency Rating | 1.25 GIGAHERTZ MINIMUM AND 1.35 GIGAHERTZ MAXIMUM |
| Unit Type | WAVEGUIDE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | N |
NSN 5985-00-646-5300 is a Coupler,directional, manufactured by Telephonics Corp/prd Instruments, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-646-5300 has 2 manufacturer part numbers on file: N221481-1 (Raytheon Company Dba Raytheon Co), 26371 (Telephonics Corp/prd Instruments).
3 possible matches (shared part number, not a government interchangeability claim): 3120-00-684-2617, 3130-01-192-9411, 5985-01-391-7665. Verify interchangeability with system specifications before substitution.
Key specifications for 26371: Overall Height: 9.250 INCHES NOMINAL IN; Terminal Fitting Controlling Agency: JCENS; Usage Design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING; Power Loss in Decibels: 40.0. 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 5985-00-646-5300 has DEMIL Code D. 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.