The Adapter,waveguide, cataloged under National Stock Number 5985-01-143-9571, 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 Frontgrade Technologies Inc.. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-143-9571 |
| Primary Part Number | 2037469-0501 |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| FSC Application Data | AIRBORNE RADAR |
| Flange Quantity | 2 |
| Criticality Code Justification | FEAT |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, ROUND |
| Adapter Length | 1.375 INCHES NOMINAL IN |
| Flange Connecting Hole Diameter | 0.161 INCHES MINIMUM AND 0.171 INCHES MAXIMUM ALL FLANGES ALL CONNECTION FACILITIES IN |
| Material | ALUMINUM SINGLE FLANGE |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES |
| Flange Style | CHOKE TYPE ALL FLANGES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 2037469-0501 | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| 2037469-0501 PRIMARY | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 2037469-0501 | 5/9 Secondary reference Honeywell International Inc Dba Honeywell |
| 2037469 | D/9 Drawing number reference only Raytheon Company Dba Raytheon Co |
| 2037469-0501 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-01-143-9571 is a Adapter,waveguide, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-143-9571 has 2 manufacturer part numbers on file: 2037469-0501 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us), 2037469-0501 (Frontgrade Technologies Inc.).
Key specifications for 2037469-0501: FSC Application Data: AIRBORNE RADAR; Flange Quantity: 2; Criticality Code Justification: FEAT; Style Designator: WAVEGUIDE TO COAXIAL. 10 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 5985-01-143-9571 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.