The Waveguide Assembly, cataloged under National Stock Number 5985-00-280-3481, 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 20 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-280-3481 |
| Primary Part Number | 7705530G3 |
| 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 ALL TUBING SEGMENT |
| Flange Inside Height | 3.420 INCHES NOMINAL ALL FLANGES IN |
| Flange Quantity | 2 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | RIGID ALL TUBING SEGMENT |
| Waveguide Inside Width | 6.500 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 5.438 INCHES NOMINAL ALL FLANGES IN |
| Flange Connecting Hole Diameter | 0.328 INCHES NOMINAL ALL FLANGES SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 6.670 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Length | 3.490 FEET NOMINAL FT |
| Waveguide Outside Height | 3.410 INCHES NOMINAL IN |
| Waveguide Outside Width | 6.660 INCHES NOMINAL IN |
| Flange Depth | 1.000 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 8.688 INCHES NOMINAL ALL FLANGES IN |
| Surface Treatment | CHROMATE ALL TUBING SEGMENT AND FLANGE INSIDE SURFACES |
| Waveguide Inside Height | 3.250 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY ALL TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 10 UNTHREADED HOLE(S) ALL FLANGES SINGLE CONNECTION FACILITY |
| Flange Style | CONTACT TYPE ALL FLANGES |
| 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 |
|---|---|
| 7705530G3 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| CG962U | 5/1 Secondary reference U.S. Government activity |
NSN 5985-00-280-3481 is a Waveguide Assembly, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-280-3481 has 1 manufacturer part number on file: 7705530G3 (Lockheed Martin Corporation Div Rms).
2 possible matches (shared part number, not a government interchangeability claim): 5985-00-280-3482, 5985-00-280-3484. Verify interchangeability with system specifications before substitution.
Key specifications for 7705530G3: Tubing Wall Construction Style: SEAMLESS ALL TUBING SEGMENT; Flange Inside Height: 3.420 INCHES NOMINAL ALL FLANGES IN; Flange Quantity: 2; Style Designator: STRAIGHT TYPE. 20 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 5985-00-280-3481 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.