The Waveguide Assembly, cataloged under National Stock Number 5985-00-219-8341, 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 Us Army Aviation and Missile Command. Government technical data includes 28 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-219-8341 |
| Primary Part Number | 8176500 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Tubing Wall Construction Style | INTERLOCKED SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.750 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Height | 1.375 INCHES NOMINAL FIRST FLANGE IN |
| Flange Quantity | 2 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 1.122 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Inside Width | 1.122 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Width | 0.497 INCHES NOMINAL SECOND FLANGE IN |
| Thread Direction | RIGHT-HAND SECOND FLANGE SINGLE CONNECTION FACILITY |
| Waveguide Length | 4.000 INCHES NOMINAL IN |
| Nominal Thread Size | 0.164 INCHES SECOND FLANGE SINGLE CONNECTION FACILITY IN |
| Waveguide Outside Height | 0.750 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.375 INCHES NOMINAL IN |
| Flange Depth | 0.375 INCHES NOMINAL SECOND FLANGE IN |
| Flange Depth | 0.375 INCHES NOMINAL FIRST FLANGE IN |
| Surface Treatment | SILVER ALL FLANGE INSIDE SURFACES |
| Waveguide Inside Height | 0.497 INCHES NOMINAL IN |
| Thread Class | 2B SECOND FLANGE SINGLE CONNECTION FACILITY |
| Material | COPPER ALLOY ALL FLANGE |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) SECOND FLANGE SINGLE CONNECTION FACILITY |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) FIRST FLANGE SINGLE CONNECTION FACILITY |
| Flange Outside Diameter | 1.750 INCHES NOMINAL FIRST FLANGE IN |
| Flange Outside Diameter | 1.250 INCHES NOMINAL SECOND FLANGE IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SECOND FLANGE SINGLE CONNECTION FACILITY |
| Flange Style | COVER TYPE FIRST FLANGE |
| Flange Style | COVER TYPE SECOND FLANGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 30973 | Frontgrade Technologies Inc. (USA) |
| 8176500 PRIMARY | Us Army Aviation and Missile Command (USA) |
| G210731 | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| G210731 | 5/9 Secondary reference American Telephone and Telegraph Co |
| 30973 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-219-8341 is a Waveguide Assembly, manufactured by Us Army Aviation and Missile Command, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-219-8341 has 3 manufacturer part numbers on file: 30973 (Frontgrade Technologies Inc.), 8176500 (Us Army Aviation and Missile Command), G210731 (Microwave Engineering Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 5330-00-863-1548, 4720-01-441-8401. Verify interchangeability with system specifications before substitution.
Key specifications for 8176500: Tubing Wall Construction Style: INTERLOCKED SINGLE TUBING SEGMENT; Flange Inside Height: 0.750 INCHES NOMINAL SECOND FLANGE IN; Flange Inside Height: 1.375 INCHES NOMINAL FIRST FLANGE IN; Flange Quantity: 2. 28 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 5985-00-219-8341 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.