The Waveguide Assembly, cataloged under National Stock Number 5985-01-498-8244, 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 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-498-8244 |
| Primary Part Number | R177-1028 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microwave Engineering Corporation |
| Status | ACTIVE |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.30 |
| Waveguide First Leg Length | 1.590 INCHES NOMINAL IN |
| Waveguide Second Leg Length | 2.250 INCHES NOMINAL IN |
| Style Designator | THREE BEND TYPE |
| Flexibility | FLEXIBLE SINGLE TUBING SEGMENT |
| Waveguide Fourth Leg Length | 2.000 INCHES NOMINAL IN |
| Insertion Loss in Decibels | 1.00 |
| Material | ALUMINUM ALLOY 6061 ALL FLANGE |
| Material | COPPER ALLOY SINGLE TUBING SEGMENT |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) ALL FLANGES SINGLE CONNECTION FACILITY |
| Waveguide Third Leg Length | 2.250 INCHES NOMINAL IN |
| 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 |
|---|---|
| R177-1028 PRIMARY | Microwave Engineering Corporation (USA) |
| 234012 | Microtech Inc Dba Microtech Inc (USA) |
| Reference | Meaning |
|---|---|
| R177-711 | 5/9 Secondary reference Microwave Engineering Corporation |
| 1452422 | D/9 Drawing number reference only U.S. Government activity |
| 1452422-1 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5985-01-498-8244 is a Waveguide Assembly, manufactured by Microwave Engineering Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-498-8244 has 2 manufacturer part numbers on file: R177-1028 (Microwave Engineering Corporation), 234012 (Microtech Inc Dba Microtech Inc).
1 possible match (shared part number, not a government interchangeability claim): 5985-01-498-8253. Verify interchangeability with system specifications before substitution.
Key specifications for R177-1028: Flange Quantity: 2; Voltage Standing Wave Ratio: 1.30; Waveguide First Leg Length: 1.590 INCHES NOMINAL IN; Waveguide Second Leg Length: 2.250 INCHES NOMINAL IN. 12 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 5985-01-498-8244 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.