The Support,waveguide, cataloged under National Stock Number 5985-00-571-4908, 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 Keysight Technologies Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-571-4908 |
| Primary Part Number | 11540A |
| Item Name | Support,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Keysight Technologies Inc |
| Status | ACTIVE |
| FSC Application Data | TEST SET ELECTRONIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 955600515800 | Thales Nederland (NLD) |
| AC24 | Keysight Technologies Inc (USA) |
| 11540A PRIMARY | Keysight Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 11540A | 3/9 Design control — primary reference Keysight Technologies, Inc. |
| 11540A | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| AC24 | 5/9 Secondary reference Keysight Technologies, Inc. |
| AC24 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
NSN 5985-00-571-4908 is a Support,waveguide, manufactured by Keysight Technologies Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-571-4908 has 3 manufacturer part numbers on file: 955600515800 (Thales Nederland), AC24 (Keysight Technologies Inc), 11540A (Keysight Technologies Inc).
1 possible match (shared part number, not a government interchangeability claim): 4310-01-176-9495. Verify interchangeability with system specifications before substitution.
Key specifications for 11540A: Overall Height: 2.500 INCHES NOMINAL IN; FSC Application Data: TEST SET ELECTRONIC; Special Features: MATERIAL ZINC ALLOY; End Item Identification: INDICATOR,STANDING WAVE RATIO 7508574P1; SUPPORT EQUIPMENT, B-52 AIRCRAFT. 1 specification is 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.
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.