The Waveguide Assembly, cataloged under National Stock Number 5985-00-919-9211, 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 20 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-919-9211 |
| Primary Part Number | 9991927 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| FSC Application Data | ANTENNA RECEIVER TRANSMITTER GROUP MISSILE TRACKING |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 1.502 INCHES MINIMUM AND 1.505 INCHES MAXIMUM ALL FLANGES IN |
| Flange Quantity | 2 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 3.003 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 2.980 INCHES MINIMUM FIRST FLANGE IN |
| Flange Outside Height | 3.020 INCHES MAXIMUM SECOND FLANGE IN |
| Flange Inside Width | 3.002 INCHES MINIMUM AND 3.005 INCHES MAXIMUM ALL FLANGES IN |
| Waveguide Length | 30.711 INCHES MINIMUM AND 30.731 INCHES MAXIMUM IN |
| Waveguide Outside Height | 3.000 INCHES NOMINAL IN |
| Waveguide Outside Width | 4.500 INCHES NOMINAL IN |
| Flange Depth | 0.320 INCHES MINIMUM AND 0.360 INCHES MAXIMUM ALL FLANGES IN |
| Flange Outside Width | 4.480 INCHES MINIMUM AND 4.520 INCHES MAXIMUM ALL FLANGES IN |
| Surface Treatment | CHROMATE AND PAINT ALL TUBING SEGMENT AND FLANGE OUTSIDE SURFACES |
| Waveguide Inside Height | 1.503 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 ALL FLANGE |
| Flange Style | CONTACT TYPE ALL FLANGES |
| 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 |
|---|---|
| 9991927 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 9991927 | C/1 Advisory reference — outside the item-of-supply concept Lucent Technologies Inc Corporate Headquarters |
| 9991927 | 5/9 Secondary reference Lucent Technologies Inc Dba Federal Marketing Group |
| 9991927 | 5/9 Secondary reference American Telephone and Telegraph Co |
NSN 5985-00-919-9211 is a Waveguide Assembly, manufactured by Us Army Aviation and Missile Command, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-919-9211 has 1 manufacturer part number on file: 9991927 (Us Army Aviation and Missile Command).
Key specifications for 9991927: FSC Application Data: ANTENNA RECEIVER TRANSMITTER GROUP MISSILE TRACKING; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 1.502 INCHES MINIMUM AND 1.505 INCHES MAXIMUM ALL FLANGES IN; Flange Quantity: 2. 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 5985-00-919-9211 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.