The Waveguide Assembly, cataloged under National Stock Number 5985-00-929-5944, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. 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 | 5985-00-929-5944 |
| Primary Part Number | 1770257REVB |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| FSC Application Data | FIRE CONTROL RADAR EQUIPMENT,EXCEPT AIRBORNE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.497 INCHES NOMINAL ALL FLANGES IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.05 |
| Bend Angle in Deg | 45.0 SINGLE BEND E-PLANE |
| Style Designator | BEND TYPE |
| Waveguide Offset Distance | 0.880 INCHES NOMINAL IN |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Flange Inside Diameter | 1.625 INCHES NOMINAL ALL FLANGES IN |
| 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 Inside Width | 1.122 INCHES NOMINAL ALL FLANGES IN |
| Thread Direction | RIGHT-HAND ALL FLANGES SINGLE CONNECTION FACILITY |
| Nominal Thread Size | 0.164 INCHES ALL FLANGES SINGLE CONNECTION FACILITY IN |
| Waveguide Outside Height | 0.745 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.370 INCHES NOMINAL IN |
| Flange Depth | 0.625 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 1.875 INCHES NOMINAL ALL FLANGES IN |
| Surface Treatment | CHROMATE ZINC AND ENAMEL ALL FLANGE OUTSIDE SURFACES |
| Surface Treatment | CHROMATE ZINC AND ENAMEL SINGLE TUBING SEGMENT OUTSIDE SURFACES |
| Surface Treatment | CHROMATE ZINC ALL FLANGE INSIDE SURFACES |
| Surface Treatment | CHROMATE ZINC SINGLE TUBING SEGMENT INSIDE SURFACES |
| Waveguide Inside Height | 0.497 INCHES NOMINAL IN |
| Thread Class | 2B ALL FLANGES SINGLE CONNECTION FACILITY |
| Material | COPPER ALLOY SINGLE TUBING SEGMENT |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) ALL FLANGES SINGLE CONNECTION FACILITY |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) ALL FLANGES SINGLE CONNECTION FACILITY |
| Flange Style | CHOKE TYPE ALL FLANGES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1770257REVB PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 5985-00-929-5944 is a Waveguide Assembly, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-929-5944 has 1 manufacturer part number on file: 1770257REVB (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 1770257REVB: FSC Application Data: FIRE CONTROL RADAR EQUIPMENT,EXCEPT AIRBORNE; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.497 INCHES NOMINAL ALL FLANGES IN; Flange Quantity: 2. 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 5985-00-929-5944 has DEMIL Code B. 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.