The Adapter,waveguide, cataloged under National Stock Number 5985-00-694-5320, 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 20 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-694-5320 |
| Primary Part Number | 356A |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Telephonics Corp/prd Instruments |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.753 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Quantity | 1 |
| Voltage Standing Wave Ratio | 1.25 |
| Adapter Diameter | 3.125 INCHES NOMINAL IN |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Waveguide Inside Width | 1.372 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Adapter Overall Height | 2.500 INCHES NOMINAL IN |
| Adapter Length | 3.375 INCHES NOMINAL IN |
| Flange Connecting Hole Diameter | 0.199 INCHES NOMINAL SINGLE FLANGE ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 1.503 INCHES NOMINAL SINGLE FLANGE IN |
| Waveguide Outside Height | 0.750 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.500 INCHES NOMINAL IN |
| Flange Depth | 0.375 INCHES NOMINAL SINGLE FLANGE IN |
| Waveguide Inside Height | 0.622 INCHES NOMINAL IN |
| Material | COPPER ALLOY SINGLE FLANGE |
| Flange Connecting Facility and Quantity | 6 UNTHREADED HOLE(S) SINGLE FLANGE ALL CONNECTION FACILITIES |
| Flange Outside Diameter | 3.125 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Style | COVER TYPE SINGLE FLANGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 356A PRIMARY | Telephonics Corp/prd Instruments (USA) |
| 10519425 | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| 10519425 | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 356A | 5/9 Secondary reference Peraton Inc |
NSN 5985-00-694-5320 is a Adapter,waveguide, manufactured by Telephonics Corp/prd Instruments, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-694-5320 has 3 manufacturer part numbers on file: 356A (Telephonics Corp/prd Instruments), 10519425 (Army, United States Department of the Dba Rock Island Arsenal Jmtc), 10519425 (Us Army Aviation and Missile Command).
Key specifications for 356A: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.753 INCHES NOMINAL SINGLE FLANGE IN; Flange Quantity: 1; Voltage Standing Wave Ratio: 1.25. 20 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 5985-00-694-5320 has DEMIL Code Q. 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.