The Waveguide Assembly, cataloged under National Stock Number 5985-00-199-3718, 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 Northrop Grumman Systems Corporation Dba Electronic Systems. Government technical data includes 23 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-199-3718 |
| Primary Part Number | 990C063H02 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Northrop Grumman Systems Corporation Dba Electronic Systems |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Tubing Wall Construction Style | CONVOLUTE SINGLE TUBING SEGMENT |
| Flange Quantity | 2 |
| Precious Material | SILVER |
| Voltage Standing Wave Ratio | 1.20 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | FLEXIBLE SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 1.120 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR DOUBLE RIDGED EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.375 INCHES MINIMUM AND 1.407 INCHES MAXIMUM FIRST FLANGE IN |
| Waveguide Length | 2.000 FEET NOMINAL FT |
| Waveguide Outside Height | 0.626 INCHES MINIMUM AND 0.634 INCHES MAXIMUM IN |
| Waveguide Outside Width | 1.210 INCHES MINIMUM AND 1.218 INCHES MAXIMUM IN |
| Flange Outside Width | 1.953 INCHES MINIMUM AND 1.985 INCHES MAXIMUM FIRST FLANGE IN |
| Insertion Loss in Decibels | 0.20 |
| Surface Treatment | CHROMATE ALL FLANGE OUTSIDE SURFACES |
| Surface Treatment | SILVER SINGLE TUBING SEGMENT INSIDE SURFACES |
| Precious Material and Location | TUBING SEGMENT SURFACES SILVER |
| Waveguide Inside Height | 0.525 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 ALL FLANGE |
| Material | RUBBER SINGLE TUBING JACKET |
| Material | COPPER ALLOY SINGLE TUBING SEGMENT |
| Flange Style | CONTACT, DOUBLE RIDGE TYPE FIRST FLANGE |
| 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 |
|---|---|
| 990C063H02 | Mercury Commercial Electronics, Inc. Dba Micronetics (USA) |
| 990C063H02 | Microtech Inc Dba Microtech Inc (USA) |
| TDFT22001 | Microwave Engineering Corporation (USA) |
| 990C063H02 PRIMARY | Northrop Grumman Systems Corporation Dba Electronic Systems (USA) |
| Reference | Meaning |
|---|---|
| 990C063H02 | 5/9 Secondary reference Astro Microwave Inc |
| 990C063H02 | 5/2 Secondary reference U.S. Government activity |
NSN 5985-00-199-3718 is a Waveguide Assembly, manufactured by Northrop Grumman Systems Corporation Dba Electronic Systems, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-199-3718 has 4 manufacturer part numbers on file: 990C063H02 (Mercury Commercial Electronics, Inc. Dba Micronetics), 990C063H02 (Microtech Inc Dba Microtech Inc), TDFT22001 (Microwave Engineering Corporation), 990C063H02 (Northrop Grumman Systems Corporation Dba Electronic Systems).
Key specifications for 990C063H02: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Tubing Wall Construction Style: CONVOLUTE SINGLE TUBING SEGMENT; Flange Quantity: 2; Precious Material: SILVER. 23 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 5985-00-199-3718 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.