The Electron Tubes,matched, cataloged under National Stock Number 5960-00-023-8976, 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 Hickok Waekon Llc. Government technical data includes 7 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5960-00-023-8976 |
| Primary Part Number | 20877-21 |
| Item Name | Electron Tubes,matched |
| FSC / FSG | 5960 / 59 — Electron Tubes and Associated Hardware |
| Manufacturer | Hickok Waekon Llc |
| Status | ACTIVE |
| Tube Size Designation | 7733 |
| Controlling Agency | HICKOK ELECTRICAL INSTRUMENT CO. |
| Identifying Number | 20877-21 DRAWING NO. |
| Individual Tube Quantity | 2 |
| Manufacturer Classification | WIDE BAND PENTODE |
| Matched Characteristic | AMPLIFICATION |
| Material | GLASS ENVELOPE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 5960-00-023-8976 is a Electron Tubes,matched, manufactured by Hickok Waekon Llc, classified under FSC 5960, Electron Tubes and Associated Hardware. Status: active.
NSN 5960-00-023-8976 has 2 manufacturer part numbers on file: 20877-21 (Hickok Waekon Llc), 12BY7A (Hickok Waekon Llc).
2 possible matches (shared part number, not a government interchangeability claim): 5960-00-052-8984, 5960-00-538-2363. Verify interchangeability with system specifications before substitution.
Key specifications for 20877-21: Tube Size Designation: 7733; Controlling Agency: HICKOK ELECTRICAL INSTRUMENT CO.; Identifying Number: 20877-21 DRAWING NO.; Individual Tube Quantity: 2. 7 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 5960-00-023-8976 has DEMIL Code B. 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.