The Waveguide Assembly, cataloged under National Stock Number 5985-00-985-9055, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 30 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-985-9055 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENTSEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.311 INCHES NOMINAL FIRST FLANGE0.311 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Height | 0.394 INCHES NOMINAL SECOND FLANGE0.394 INCHES NOMINAL SECOND FLANGE IN |
| Flange Quantity | 22 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 0.622 INCHES NOMINAL0.622 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULARINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.312 INCHES NOMINAL SECOND FLANGE1.312 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Height | 1.312 INCHES NOMINAL FIRST FLANGE1.312 INCHES NOMINAL FIRST FLANGE IN |
| Flange Connecting Hole Diameter | 0.144 INCHES NOMINAL SECOND FLANGE ALL CONNECTION FACILITIES0.144 INCHES NOMINAL SECOND FLANGE ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 0.622 INCHES NOMINAL FIRST FLANGE0.622 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Width | 0.705 INCHES NOMINAL SECOND FLANGE0.705 INCHES NOMINAL SECOND FLANGE IN |
| Thread Direction | RIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIESRIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES |
| Waveguide Length | 3.125 INCHES NOMINAL IN |
| Nominal Thread Size | 0.138 INCHES FIRST FLANGE ALL CONNECTION FACILITIES0.138 INCHES FIRST FLANGE ALL CONNECTION FACILITIES IN |
| Waveguide Outside Height | 0.391 INCHES NOMINAL0.391 INCHES NOMINAL IN |
| Waveguide Outside Width | 0.702 INCHES NOMINAL0.702 INCHES NOMINAL IN |
| Flange Depth | 0.313 INCHES NOMINAL SECOND FLANGE0.313 INCHES NOMINAL SECOND FLANGE IN |
| Flange Depth | 0.375 INCHES NOMINAL FIRST FLANGE0.375 INCHES NOMINAL FIRST FLANGE IN |
| Flange Outside Width | 1.312 INCHES NOMINAL SECOND FLANGE1.312 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Width | 1.312 INCHES NOMINAL FIRST FLANGE1.312 INCHES NOMINAL FIRST FLANGE IN |
| Tubing Twist Type | STRAIGHT TWIST SINGLE TUBING SEGMENTSTRAIGHT TWIST SINGLE TUBING SEGMENT |
| Tubing Twist Angle in Deg | 90.0 SINGLE TUBING SEGMENT90.0 SINGLE TUBING SEGMENT |
| Waveguide Inside Height | 0.311 INCHES NOMINAL0.311 INCHES NOMINAL IN |
| Thread Class | 2B FIRST FLANGE ALL CONNECTION FACILITIES2B FIRST FLANGE ALL CONNECTION FACILITIES |
| Material | COPPER ALLOY ALL TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) SECOND FLANGE ALL CONNECTION FACILITIES |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) FIRST FLANGE ALL CONNECTION FACILITIES4 THREADED HOLE(S) FIRST FLANGE ALL CONNECTION FACILITIES |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) FIRST FLANGE ALL CONNECTION FACILITIES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| CG-986/U | 5/1 Secondary reference U.S. Government activity |
| MIL-W-3970/1 | 4/1 Identification reference U.S. Government activity |
| M3970/1-011 | 2/2 Government specification standardization U.S. Government activity |
| MS35220-11 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-985-9055 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): 5985-01-036-9308. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-00-985-9055: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENTSEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.311 INCHES NOMINAL FIRST FLANGE0.311 INCHES NOMINAL FIRST FLANGE IN; Flange Inside Height: 0.394 INCHES NOMINAL SECOND FLANGE0.394 INCHES NOMINAL SECOND FLANGE IN; Flange Quantity: 22. 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 5985-00-985-9055 has DEMIL Code Q. 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.