The Waveguide Assembly, cataloged under National Stock Number 5985-01-072-9977, 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 L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 30 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-072-9977 |
| Primary Part Number | 140792-1 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | L3harris Technologies, Inc Div Space & Airborne Systems |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS ALL TUBING SEGMENTSEAMLESS ALL TUBING SEGMENT |
| Flange Inside Height | 0.497 INCHES NOMINAL FIRST FLANGE0.497 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Height | 0.448 INCHES MAXIMUM SECOND FLANGE0.448 INCHES MAXIMUM SECOND FLANGE IN |
| Flange Quantity | 22 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | RIGID ALL TUBING SEGMENT |
| Flange Inside Diameter | 1.256 INCHES MAXIMUM SECOND FLANGE1.256 INCHES MAXIMUM SECOND FLANGE IN |
| Waveguide Inside Width | 1.122 INCHES NOMINAL1.122 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULARINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.875 INCHES NOMINAL FIRST FLANGE1.875 INCHES NOMINAL FIRST FLANGE IN |
| Flange Outside Height | 1.750 INCHES NOMINAL SECOND FLANGE1.750 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Width | 1.122 INCHES NOMINAL FIRST FLANGE1.122 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Width | 0.984 INCHES MAXIMUM SECOND FLANGE0.984 INCHES MAXIMUM SECOND FLANGE IN |
| Thread Direction | RIGHT-HAND ALL FLANGES ALL CONNECTION FACILITIESRIGHT-HAND ALL FLANGES ALL CONNECTION FACILITIES |
| Waveguide Length | 2.950 INCHES NOMINAL IN |
| Nominal Thread Size | 0.164 INCHES ALL FLANGES ALL CONNECTION FACILITIES0.164 INCHES ALL FLANGES ALL CONNECTION FACILITIES IN |
| Waveguide Outside Height | 0.625 INCHES NOMINAL0.625 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.250 INCHES NOMINAL1.250 INCHES NOMINAL IN |
| Flange Depth | 0.625 INCHES NOMINAL FIRST FLANGE0.625 INCHES NOMINAL FIRST FLANGE IN |
| Flange Depth | 0.625 INCHES NOMINAL SECOND FLANGE0.625 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Width | 1.875 INCHES NOMINAL FIRST FLANGE1.875 INCHES NOMINAL FIRST FLANGE IN |
| Flange Outside Width | 1.750 INCHES NOMINAL SECOND FLANGE1.750 INCHES NOMINAL SECOND FLANGE IN |
| Surface Treatment | ENAMEL ALL TUBING SEGMENT OUTSIDE SURFACES |
| Waveguide Inside Height | 0.497 INCHES NOMINAL0.497 INCHES NOMINAL IN |
| Thread Class | 2B ALL FLANGES ALL CONNECTION FACILITIES2B ALL FLANGES ALL CONNECTION FACILITIES |
| Thread Quantity Per Inch | 32 ALL FLANGES ALL CONNECTION FACILITIES32 ALL FLANGES ALL CONNECTION FACILITIES |
| Material | ALUMINUM ALLOY 1100 ALL TUBING SEGMENT |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES4 THREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) ALL FLANGES ALL CONNECTION FACILITIES |
| Flange Style | CHOKE 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 |
|---|---|
| 140792-1 PRIMARY | L3harris Technologies, Inc Div Space & Airborne Systems (USA) |
NSN 5985-01-072-9977 is a Waveguide Assembly, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-072-9977 has 1 manufacturer part number on file: 140792-1 (L3harris Technologies, Inc Div Space & Airborne Systems).
Key specifications for 140792-1: Tubing Wall Construction Style: SEAMLESS ALL TUBING SEGMENTSEAMLESS ALL TUBING SEGMENT; Flange Inside Height: 0.497 INCHES NOMINAL FIRST FLANGE0.497 INCHES NOMINAL FIRST FLANGE IN; Flange Inside Height: 0.448 INCHES MAXIMUM SECOND FLANGE0.448 INCHES MAXIMUM SECOND FLANGE IN; Flange Quantity: 22. 30 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 5985-01-072-9977 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.