The Waveguide Assembly, cataloged under National Stock Number 5985-01-151-0681, 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 Microwave Engineering Corporation. Government technical data includes 25 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-151-0681 |
| Primary Part Number | TRS645108 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microwave Engineering Corporation |
| Status | ACTIVE |
| FSC Application Data | RADAR SET AN/APG-65 |
| Tubing Wall Construction Style | SEAMLESS ALL TUBING SEGMENT |
| Flange Inside Height | 0.400 INCHES NOMINAL ALL FLANGES IN |
| Flange Quantity | 2 |
| Flexibility | FLEXIBLE SECOND TUBING SEGMENT |
| Flexibility | RIGID FIRST TUBING SEGMENT |
| Waveguide Inside Width | 0.900 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.625 INCHES NOMINAL ALL FLANGES IN |
| Flange Connecting Hole Diameter | 0.169 INCHES MINIMUM AND 0.172 INCHES MAXIMUM SECOND FLANGE SECOND CONNECTION FACILITY IN |
| Flange Inside Width | 0.900 INCHES NOMINAL ALL FLANGES IN |
| Thread Direction | RIGHT-HAND FIRST FLANGE FIRST CONNECTION FACILITY |
| Nominal Thread Size | 0.164 INCHES FIRST FLANGE FIRST CONNECTION FACILITY IN |
| Waveguide Outside Height | 0.500 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN |
| Waveguide Outside Width | 1.000 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN |
| Flange Depth | 0.438 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 1.625 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Inside Height | 0.400 INCHES NOMINAL IN |
| Thread Class | 2B FIRST FLANGE FIRST CONNECTION FACILITY |
| Thread Quantity Per Inch | 32 FIRST FLANGE FIRST CONNECTION FACILITY |
| Material | ALUMINUM ALLOY 6061 ALL TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) FIRST FLANGE FIRST CONNECTION FACILITY |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) SECOND FLANGE SECOND CONNECTION FACILITY |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) FIRST FLANGE FIRST CONNECTION FACILITY |
| Flange Style | CHOKE 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 |
|---|---|
| TRS645108 PRIMARY | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| 259316 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5985-01-151-0681 is a Waveguide Assembly, manufactured by Microwave Engineering Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-151-0681 has 1 manufacturer part number on file: TRS645108 (Microwave Engineering Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5985-01-162-9205. Verify interchangeability with system specifications before substitution.
Key specifications for TRS645108: FSC Application Data: RADAR SET AN/APG-65; Tubing Wall Construction Style: SEAMLESS ALL TUBING SEGMENT; Flange Inside Height: 0.400 INCHES NOMINAL ALL FLANGES IN; Flange Quantity: 2. 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 5985-01-151-0681 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.