The Electron Tube, cataloged under National Stock Number 5960-01-290-2604, 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 Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5960-01-290-2604 |
| Primary Part Number | Y634 |
| Item Name | Electron Tube |
| FSC / FSG | 5960 / 59 — Electron Tubes and Associated Hardware |
| Manufacturer | Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations |
| Status | ACTIVE |
| Heater Current Rating | 0.9 AMPERES MINIMUM AND 1.8 AMPERES MAXIMUM |
| Tube Type | TRIODE |
| Overall Diameter | 0.775 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN |
| Identifying Number | Y634 REFERENCE NO. |
| Heater Voltage Rating in Volts | 6.3 |
| Envelope Medium Type | VACUUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| Y634 PRIMARY | Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations (USA) |
| Reference | Meaning |
|---|---|
| 373078-1 | 7/2 Vendor item drawing reference Raytheon Company Div Corp |
| Y634 | 3/9 Design control — primary reference Varian Associates Inc |
NSN 5960-01-290-2604 is a Electron Tube, manufactured by Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations, classified under FSC 5960, Electron Tubes and Associated Hardware. Status: active.
NSN 5960-01-290-2604 has 1 manufacturer part number on file: Y634 (Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-361-9555. Verify interchangeability with system specifications before substitution.
Key specifications for Y634: Overall Height: 1.54 INCHES MAXIMUM IN; Heater Current Rating: 0.9 AMPERES MINIMUM AND 1.8 AMPERES MAXIMUM; Tube Type: TRIODE; Overall Diameter: 0.775 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN. 6 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 5960-01-290-2604 has DEMIL Code Q. 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.