The Waveguide Assembly, cataloged under National Stock Number 5985-00-444-5306, 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 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-444-5306 |
| Primary Part Number | 144348-1 |
| 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 | BELLOWS SECOND TUBING SEGMENT |
| Tubing Wall Construction Style | NULL-POINT SEAM FIRST TUBING SEGMENT |
| Flange Inside Height | 1.500 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Height | 1.342 INCHES NOMINAL FIRST FLANGE IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.08 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | FLEXIBLE SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 2.840 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 35.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Outside Height | 3.625 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Height | 3.000 INCHES NOMINAL FIRST FLANGE IN |
| Flange Connecting Hole Diameter | 0.169 INCHES NOMINAL FIRST FLANGE SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 3.000 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Width | 2.842 INCHES NOMINAL FIRST FLANGE IN |
| Thread Direction | RIGHT-HAND SECOND FLANGE SINGLE CONNECTION FACILITY |
| Waveguide Length | 3.118 FEET NOMINAL FT |
| Nominal Thread Size | 0.312 INCHES SECOND FLANGE SINGLE CONNECTION FACILITY IN |
| Waveguide Outside Height | 1.500 INCHES NOMINAL IN |
| Waveguide Outside Width | 3.000 INCHES NOMINAL IN |
| Flange Depth | 0.690 INCHES NOMINAL FIRST FLANGE IN |
| Flange Depth | 0.810 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Width | 4.500 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Width | 4.500 INCHES NOMINAL FIRST FLANGE IN |
| Insertion Loss in Decibels | 0.06 |
| Waveguide Inside Height | 1.340 INCHES NOMINAL IN |
| Thread Class | 2B SECOND FLANGE SINGLE CONNECTION FACILITY |
| Material | ALUMINUM ALL FLANGE |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) SECOND FLANGE SINGLE CONNECTION FACILITY |
| 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 |
|---|---|
| 144348-1 PRIMARY | L3harris Technologies, Inc Div Space & Airborne Systems (USA) |
| 47384-701 | Mega Industries Inc Mega Microwave Div (USA) |
| 228856 | Microtech Inc Dba Microtech Inc (USA) |
| 123272 | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 123272 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-444-5306 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 5985-00-444-5306 has 4 manufacturer part numbers on file: 144348-1 (L3harris Technologies, Inc Div Space & Airborne Systems), 47384-701 (Mega Industries Inc Mega Microwave Div), 228856 (Microtech Inc Dba Microtech Inc), 123272 (Frontgrade Technologies Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5960-01-273-4201. Verify interchangeability with system specifications before substitution.
Key specifications for 144348-1: Tubing Wall Construction Style: BELLOWS SECOND TUBING SEGMENT; Tubing Wall Construction Style: NULL-POINT SEAM FIRST TUBING SEGMENT; Flange Inside Height: 1.500 INCHES NOMINAL SECOND FLANGE IN; Flange Inside Height: 1.342 INCHES NOMINAL FIRST FLANGE IN. 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 5985-00-444-5306 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.