The Waveguide Assembly, cataloged under National Stock Number 5985-01-372-9549, 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 Div L3harris Technologies Inc Dba Harris Corporation. Government technical data includes 22 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-372-9549 |
| Primary Part Number | 177881-001 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | L3harris Technologies, Inc. Dba Harris Div L3harris Technologies Inc Dba Harris Corporation |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 2.145 INCHES MINIMUM AND 2.155 INCHES MAXIMUM ALL FLANGES IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.05 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 4.300 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 4.170 INCHES MINIMUM AND 4.210 INCHES MAXIMUM ALL FLANGES IN |
| Flange Connecting Hole Diameter | 0.261 INCHES MINIMUM AND 0.271 INCHES MAXIMUM ALL FLANGES ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 4.295 INCHES MINIMUM AND 4.305 INCHES MAXIMUM ALL FLANGES IN |
| Waveguide Length | 11.870 INCHES MINIMUM AND 12.130 INCHES MAXIMUM IN |
| Waveguide Outside Height | 2.310 INCHES NOMINAL IN |
| Waveguide Outside Width | 4.460 INCHES NOMINAL IN |
| Flange Depth | 0.860 INCHES MINIMUM AND 0.900 INCHES MAXIMUM ALL FLANGES IN |
| Flange Outside Width | 6.320 INCHES MINIMUM AND 6.360 INCHES MAXIMUM ALL FLANGES IN |
| Insertion Loss in Decibels | 0.006 |
| Waveguide Inside Height | 2.150 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY ALL FLANGE |
| Material | ALUMINUM ALLOY 6063 SINGLE TUBING SEGMENT |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES |
| Flange Style | CONTACT TYPE ALL FLANGES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 177881-001 | Omega Laboratories Inc (USA) |
| CPR430G-270-12 | Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc (USA) |
| 177881-001 PRIMARY | L3harris Technologies, Inc. Dba Harris Div L3harris Technologies Inc Dba Harris Corporation (USA) |
| BFU430 | Frontgrade Technologies Inc. (USA) |
NSN 5985-01-372-9549 is a Waveguide Assembly, manufactured by L3harris Technologies, Inc. Dba Harris Div L3harris Technologies Inc Dba Harris Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-372-9549 has 4 manufacturer part numbers on file: 177881-001 (Omega Laboratories Inc), CPR430G-270-12 (Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc), 177881-001 (L3harris Technologies, Inc. Dba Harris Div L3harris Technologies Inc Dba Harris Corporation), BFU430 (Frontgrade Technologies Inc.).
Key specifications for 177881-001: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 2.145 INCHES MINIMUM AND 2.155 INCHES MAXIMUM ALL FLANGES IN; Flange Quantity: 2; Voltage Standing Wave Ratio: 1.05. 22 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.