The Waveguide Assembly, cataloged under National Stock Number 5985-01-262-0420, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-262-0420 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.505 INCHES NOMINAL ALL FLANGES IN |
| Flange Quantity | 2 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | FLEXIBLE SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 0.900 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.625 INCHES NOMINAL ALL FLANGES IN |
| Flange Connecting Hole Diameter | 0.169 INCHES NOMINAL ALL FLANGES ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 1.005 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Length | 9.583 FEET NOMINAL FT |
| Specification/standard Data | 81349-MIL-W-287/5 GOVERNMENT SPECIFICATION |
| Waveguide Outside Height | 0.500 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.000 INCHES NOMINAL IN |
| Flange Depth | 0.438 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 1.625 INCHES NOMINAL ALL FLANGES IN |
| Tubing Twist Type | TWISTABLE SINGLE TUBING SEGMENT |
| Waveguide Inside Height | 0.400 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY SINGLE TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 8 UNTHREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES |
| Flange Style | COVER 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 |
| Reference | Meaning |
|---|---|
| MIL-W-287/5 | 5/9 Secondary reference U.S. Government activity |
| MIL-DTL-287/5 | 4/1 Identification reference U.S. Government activity |
| M287/5-43-1150 | 2/2 Government specification standardization U.S. Government activity |
NSN 5985-01-262-0420 is a Waveguide Assembly, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5985-01-344-2410. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-01-262-0420: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.505 INCHES NOMINAL ALL FLANGES IN; Flange Quantity: 2; Style Designator: STRAIGHT TYPE. 21 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 5985-01-262-0420 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.