The Electron Tube, cataloged under National Stock Number 5960-00-892-0903, is classified within Federal Supply Class 5960 (Electron Tubes and Associated Hardware) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Drs Advanced Isr, Llc. Government technical data includes 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5960-00-892-0903 |
| Primary Part Number | 21EYP4 |
| Item Name | Electron Tube |
| FSC / FSG | 5960 / 59 — Electron Tubes and Associated Hardware |
| Manufacturer | Drs Advanced Isr, Llc |
| Status | ACTIVE |
| Tube Type | CATHODE RAY |
| Specification/standard Data | 80131-RELEASE 2589 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION |
| 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 |
|---|---|
| 21EYP4 | Drs Advanced Isr, Llc (USA) |
| Reference | Meaning |
|---|---|
| RELEASE2589 | 5/9 Secondary reference U.S. Government activity |
| 21EYP4 | 3/9 Design control — primary reference U.S. Government activity |
| 21EYP4 | 5/9 Secondary reference U.S. Government activity |
NSN 5960-00-892-0903 is a Electron Tube, manufactured by Drs Advanced Isr, Llc, classified under FSC 5960, Electron Tubes and Associated Hardware. Status: active.
NSN 5960-00-892-0903 has 1 manufacturer part number on file: 21EYP4 (Drs Advanced Isr, Llc).
1 possible match (shared part number, not a government interchangeability claim): 5960-00-904-7715. Verify interchangeability with system specifications before substitution.
Key specifications for 21EYP4: Tube Type: CATHODE RAY; Specification/standard Data: 80131-RELEASE 2589 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION. 2 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.
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.