The Waveguide Assembly, cataloged under National Stock Number 5985-00-557-5813, 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 Lockheed Martin Corporation Div Rms. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-557-5813 |
| Primary Part Number | 7708226G1 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 1.502 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Height | 1.340 INCHES NOMINAL FIRST FLANGE IN |
| Waveguide Height | 1.042 FEET NOMINAL FT |
| Flange Quantity | 2 |
| Precious Material | SILVER |
| Bend Angle in Deg | 45.0 ALL BENDS E-PLANE |
| Style Designator | DOUBLE BEND TYPE |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 2.840 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Connecting Hole Diameter | 0.257 INCHES NOMINAL SECOND FLANGE SINGLE CONNECTION FACILITY IN |
| Waveguide Center to Center Distance | 3.714 FEET NOMINAL FT |
| Flange Inside Width | 3.000 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Width | 2.840 INCHES NOMINAL FIRST FLANGE IN |
| Thread Direction | RIGHT-HAND FIRST FLANGE SINGLE CONNECTION FACILITY |
| Nominal Thread Size | 0.250 INCHES FIRST FLANGE SINGLE CONNECTION FACILITY IN |
| Waveguide Outside Height | 1.500 INCHES NOMINAL IN |
| Waveguide Outside Width | 3.000 INCHES NOMINAL IN |
| Flange Depth | 0.750 INCHES NOMINAL SECOND FLANGE IN |
| Flange Depth | 1.250 INCHES NOMINAL FIRST FLANGE IN |
| Surface Treatment | ENAMEL ALL TUBING SEGMENT AND FLANGE OUTSIDE SURFACES |
| Surface Treatment | NICKEL SILVER ALL TUBING SEGMENT INSIDE SURFACES |
| Precious Material and Location | FLANGE SURFACE SILVER |
| Waveguide Inside Height | 1.340 INCHES NOMINAL IN |
| Thread Class | 2B FIRST FLANGE SINGLE CONNECTION FACILITY |
| Thread Quantity Per Inch | 20 FIRST FLANGE SINGLE CONNECTION FACILITY |
| Material | COPPER ALLOY ALL TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 8 THREADED HOLE(S) FIRST FLANGE SINGLE CONNECTION FACILITY |
| Flange Connecting Facility and Quantity | 8 UNTHREADED HOLE(S) SECOND FLANGE 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 |
|---|---|
| 232650 | Microtech Inc Dba Microtech Inc (USA) |
| 7708226G1 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 7708226G1 | 5/9 Secondary reference General Electric Company |
| 7708226G1 | 5/9 Secondary reference General Electric Co Electronic Components Division of Electronic Atomic and Defense Systems Group |
| 7708226G1REVD | C/1 Advisory reference — outside the item-of-supply concept Lockheed Martin Corporation Div Rms |
NSN 5985-00-557-5813 is a Waveguide Assembly, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-557-5813 has 2 manufacturer part numbers on file: 232650 (Microtech Inc Dba Microtech Inc), 7708226G1 (Lockheed Martin Corporation Div Rms).
1 possible match (shared part number, not a government interchangeability claim): 5110-01-525-3702. Verify interchangeability with system specifications before substitution.
Key specifications for 7708226G1: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 1.502 INCHES NOMINAL SECOND FLANGE IN; Flange Inside Height: 1.340 INCHES NOMINAL FIRST FLANGE IN; Waveguide Height: 1.042 FEET NOMINAL FT. 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.
NSN 5985-00-557-5813 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.