The Waveguide Assembly, cataloged under National Stock Number 5985-00-557-9885, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 29 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 | 5985-00-557-9885 |
| Primary Part Number | 2835874 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.503 INCHES MINIMUM AND 0.506 INCHES MAXIMUM ALL FLANGES IN |
| Waveguide Height | 1.150 INCHES NOMINAL IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.05 |
| Waveguide Leg Length | 0.437 INCHES NOMINAL IN |
| Bend Angle in Deg | 90.0 FIRST BEND E-PLANE |
| Bend Angle in Deg | 90.0 SECOND BEND E-PLANE |
| Style Designator | U-BEND TYPE |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 0.896 INCHES MINIMUM AND 0.904 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 20.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Outside Height | 1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM ALL FLANGES IN |
| Flange Connecting Hole Diameter | 0.169 INCHES MINIMUM AND 0.172 INCHES MAXIMUM ALL FLANGES SINGLE CONNECTION FACILITY IN |
| Waveguide Center to Center Distance | 1.875 INCHES NOMINAL IN |
| Flange Inside Width | 1.003 INCHES MINIMUM AND 1.006 INCHES MAXIMUM ALL FLANGES IN |
| Waveguide Outside Height | 0.496 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN |
| Waveguide Outside Width | 0.996 INCHES MINIMUM AND 1.004 INCHES MAXIMUM IN |
| Flange Depth | 0.422 INCHES MINIMUM AND 0.453 INCHES MAXIMUM ALL FLANGES IN |
| Flange Outside Width | 1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM ALL FLANGES IN |
| Insertion Loss in Decibels | 0.10 |
| Surface Treatment | NICKEL SINGLE TUBING SEGMENT INSIDE SURFACES |
| Surface Treatment | OXIDE FILM ALL TUBING SEGMENT AND FLANGE OUTSIDE SURFACES |
| Waveguide Inside Height | 0.396 INCHES MINIMUM AND 0.404 INCHES MAXIMUM IN |
| Waveguide Longer Leg Length | 2.013 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY SINGLE TUBING SEGMENT |
| Material | ALUMINUM ALLOY ALL FLANGE |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) ALL FLANGES 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 |
|---|---|
| 2835874 | Microtech Inc Dba Microtech Inc (USA) |
| 2835874 | Memco, Inc. Dba Military Electronics Manufacturing (USA) |
| 2835874 | Bright Lights Usa, Inc Dba Blusa Defense Manufacturing (USA) |
| 2835874 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 5985-00-557-9885 is a Waveguide Assembly, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-557-9885 has 4 manufacturer part numbers on file: 2835874 (Microtech Inc Dba Microtech Inc), 2835874 (Memco, Inc. Dba Military Electronics Manufacturing), 2835874 (Bright Lights Usa, Inc Dba Blusa Defense Manufacturing), 2835874 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 2835874: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.503 INCHES MINIMUM AND 0.506 INCHES MAXIMUM ALL FLANGES IN; Waveguide Height: 1.150 INCHES NOMINAL IN; Flange Quantity: 2. 29 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 5985-00-557-9885 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.