The Waveguide Assembly, cataloged under National Stock Number 5985-01-072-9976, 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 25 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-072-9976 |
| Primary Part Number | 140787-1 |
| 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 | NULL-POINT SEAM ALL TUBING SEGMENT |
| Flange Inside Height | 0.633 INCHES MAXIMUM ALL FLANGES IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.15 |
| Style Designator | BEND TYPE |
| Waveguide Offset Distance | 2.125 INCHES NOMINAL IN |
| Flexibility | FLEXIBLE ALL TUBING SEGMENT |
| Waveguide Inside Width | 1.122 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.875 INCHES NOMINAL ALL FLANGES IN |
| Flange Connecting Hole Diameter | 0.172 INCHES MAXIMUM ALL FLANGES ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 1.312 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Outside Height | 0.625 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.250 INCHES NOMINAL IN |
| Flange Depth | 0.438 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 1.875 INCHES NOMINAL ALL FLANGES IN |
| Insertion Loss in Decibels | 0.07 |
| Surface Treatment | ENAMEL ALL TUBING SEGMENT OUTSIDE SURFACES |
| Surface Treatment | ENAMEL ALL FLANGE OUTSIDE SURFACES |
| Waveguide Inside Height | 0.497 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 ALL FLANGE |
| Material | ALUMINUM ALLOY 1100 ALL TUBING SEGMENT |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES |
| Flange Style | COVER TYPE ALL FLANGES |
| Waveguide Longer Offset Distance | 5.512 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 5985-01-072-9976 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 5985-01-072-9976 has 2 manufacturer part numbers on file: 140787-1 (L3harris Technologies, Inc Div Space & Airborne Systems), 226399 (Microtech Inc Dba Microtech Inc).
1 possible match (shared part number, not a government interchangeability claim): 6640-01-465-7576. Verify interchangeability with system specifications before substitution.
Key specifications for 140787-1: Tubing Wall Construction Style: NULL-POINT SEAM ALL TUBING SEGMENT; Flange Inside Height: 0.633 INCHES MAXIMUM ALL FLANGES IN; Flange Quantity: 2; Voltage Standing Wave Ratio: 1.15. 25 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 5985-01-072-9976 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.