The Waveguide Assembly, cataloged under National Stock Number 5985-00-175-4527, 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. Dba Harris Corp Div Antenna Products. Government technical data includes 30 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-175-4527 |
| Primary Part Number | 373504-1 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SECOND TUBING SEGMENT |
| Tubing Wall Construction Style | INTERLOCKED FIRST TUBING SEGMENT |
| Flange Inside Height | 0.394 INCHES NOMINAL ALL FLANGES IN |
| Flange Quantity | 2 |
| Precious Material | SILVER |
| Voltage Standing Wave Ratio | 1.20 |
| Style Designator | OFFSET BEND TYPE |
| Flexibility | FLEXIBLE FIRST TUBING SEGMENT |
| Flexibility | RIGID SECOND TUBING SEGMENT |
| Waveguide Inside Width | 0.622 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.312 INCHES NOMINAL ALL FLANGES IN |
| Flange Connecting Hole Diameter | 0.144 INCHES NOMINAL ALL FLANGES ALL CONNECTION FACILITIES IN |
| Waveguide Center to Center Distance | 3.245 INCHES NOMINAL IN |
| Flange Inside Width | 0.705 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Length | 4.125 INCHES NOMINAL IN |
| Waveguide Outside Height | 0.391 INCHES NOMINAL IN |
| Waveguide Outside Width | 0.702 INCHES NOMINAL IN |
| Flange Depth | 0.312 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 1.312 INCHES NOMINAL ALL FLANGES IN |
| Insertion Loss in Decibels | 0.35 |
| Surface Treatment | CHROMATE ALL FLANGE ALL SURFACES |
| Surface Treatment | CHROMATE SECOND TUBING SEGMENT ALL SURFACES |
| Surface Treatment | SILVER FIRST TUBING SEGMENT ALL SURFACES |
| Precious Material and Location | TUBING INTERNAL AND EXTERNAL SURFACES SILVER |
| Waveguide Inside Height | 0.311 INCHES NOMINAL IN |
| Material | ALUMINUM ALL FLANGE |
| Material | COPPER ALLOY FIRST TUBING SEGMENT |
| Material | ALUMINUM SECOND TUBING SEGMENT |
| Material | PLASTIC ALL TUBING JACKET |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 5985-00-175-4527 is a Waveguide Assembly, manufactured by L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-175-4527 has 2 manufacturer part numbers on file: 115172 (Frontgrade Technologies Inc.), 373504-1 (L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products).
2 possible matches (shared part number, not a government interchangeability claim): 4720-00-618-7031, 5330-01-223-4428. Verify interchangeability with system specifications before substitution.
Key specifications for 373504-1: Tubing Wall Construction Style: SEAMLESS SECOND TUBING SEGMENT; Tubing Wall Construction Style: INTERLOCKED FIRST TUBING SEGMENT; Flange Inside Height: 0.394 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.
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.