The Adapter,waveguide, cataloged under National Stock Number 5985-01-019-3834, 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 Rf-Lambda Usa, Llc Dba Rf-Lambda Usa Inc. Government technical data includes 14 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-019-3834 |
| Primary Part Number | RFWA90B9COALN |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Rf-Lambda Usa, Llc Dba Rf-Lambda Usa Inc |
| Status | ACTIVE |
| FSC Application Data | WAVEGUIDE ASSEMBLY |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Quantity | 1 |
| Adapter Overall Width | 1.625 INCHES NOMINAL IN |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Connector End Design | FEMALE |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Adapter Overall Height | 2.480 INCHES NOMINAL IN |
| Adapter Length | 1.281 INCHES NOMINAL IN |
| Flange Connecting Hole Diameter | 0.172 INCHES NOMINAL ALL FLANGES ALL CONNECTION FACILITIES IN |
| Adapter Height | 1.625 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 SINGLE TUBING SEGMENT |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES |
| Coaxial Connector Series Designation | N |
| 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 |
|---|---|
| RFWA90B9COALN | Rf-Lambda Usa, Llc Dba Rf-Lambda Usa Inc (USA) |
| Reference | Meaning |
|---|---|
| 2920209 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 3000-6254 | C/1 Advisory reference — outside the item-of-supply concept Tyco Electronics Corp |
| 3000-6254 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5985-01-019-3834 is a Adapter,waveguide, manufactured by Rf-Lambda Usa, Llc Dba Rf-Lambda Usa Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-019-3834 has 1 manufacturer part number on file: RFWA90B9COALN (Rf-Lambda Usa, Llc Dba Rf-Lambda Usa Inc).
1 possible match (shared part number, not a government interchangeability claim): 5905-01-089-6665. Verify interchangeability with system specifications before substitution.
Key specifications for RFWA90B9COALN: FSC Application Data: WAVEGUIDE ASSEMBLY; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Quantity: 1; Adapter Overall Width: 1.625 INCHES NOMINAL IN. 14 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 5985-01-019-3834 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.