The Coupler,directional, cataloged under National Stock Number 5985-01-381-4477, 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 Frontgrade Technologies Inc.. Government technical data includes 5 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-381-4477 |
| Primary Part Number | 435241 |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Usage Design | MAIN LINE TERMINAL FITTING |
| Power Loss in Decibels | 44.2 |
| Design Type | UNIDIRECTIONAL |
| Radio Frequency Rating | 2.7 GIGAHERTZ MINIMUM AND 3.0 GIGAHERTZ MAXIMUM |
| Unit Type | WAVEGUIDE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 435241 PRIMARY | Frontgrade Technologies Inc. (USA) |
| AMC1036 PRIMARY | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 1213628-201 | 7/2 Vendor item drawing reference Lockheed Martin Corporation Div Rms |
| 435241 | 5/9 Secondary reference U.S. Government activity |
| 1213628-201 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
| AMC1036 | 5/9 Secondary reference Atlantic Microwave Corporation Div Cobham Electronic Systems |
NSN 5985-01-381-4477 is a Coupler,directional, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-381-4477 has 2 manufacturer part numbers on file: 435241 (Frontgrade Technologies Inc.), AMC1036 (Frontgrade Technologies Inc.).
Key specifications for 435241: Overall Height: 4.000 INCHES NOMINAL IN; Usage Design: MAIN LINE TERMINAL FITTING; Power Loss in Decibels: 44.2; Design Type: UNIDIRECTIONAL. 5 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.
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.