The Adapter,waveguide, cataloged under National Stock Number 5985-00-191-1677, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-191-1677 |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.20 |
| Style Designator | WAVEGUIDE TO WAVEGUIDE |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.312 INCHES NOMINAL SECOND FLANGE IN |
| Adapter Length | 3.980 INCHES MINIMUM AND 4.020 INCHES MAXIMUM IN |
| Flange Connecting Hole Diameter | 0.145 INCHES NOMINAL SECOND FLANGE ALL CONNECTION FACILITIES IN |
| Flange Connecting Hole Diameter | 0.190 INCHES NOMINAL FIRST FLANGE SECOND CONNECTION FACILITY IN |
| Flange Outside Width | 1.312 INCHES NOMINAL SECOND FLANGE IN |
| Insertion Loss in Decibels | 0.50 |
| Surface Treatment | CHROMATE AND PRIMER AND ENAMEL ALL TUBING SEGMENT AND FLANGE OUTSIDE SURFACES |
| Material | ALUMINUM 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 | 2 UNTHREADED HOLE(S) FIRST FLANGE SECOND CONNECTION FACILITY |
| Flange Connecting Facility and Quantity | 2 THREADED HOLE(S) FIRST FLANGE FIRST CONNECTION FACILITY |
| Flange Style | COVER TYPE SECOND FLANGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 687231-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-00-191-1677 is a Adapter,waveguide, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
Key specifications for 5985-00-191-1677: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Quantity: 2; Voltage Standing Wave Ratio: 1.20. 18 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 5985-00-191-1677 has DEMIL Code B. 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.