The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-374-1189, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Piezo Technology Incorporated Dba Piezo Technology Inc. Government technical data includes 3 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-01-374-1189 |
| Primary Part Number | 2378F |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Piezo Technology Incorporated Dba Piezo Technology Inc |
| Status | ACTIVE |
| Mode of Oscillation | FUNDAMENTAL |
| Operating Temp Range | -30.0 TO 70.0 CELSIUS DEGC |
| Specified Frequency | 21.400 MEGAHERTZ |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5955-01-374-1189 is a Crystal Unit,quartz, manufactured by Piezo Technology Incorporated Dba Piezo Technology Inc, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-374-1189 has 2 manufacturer part numbers on file: 2378F (Piezo Technology Incorporated Dba Piezo Technology Inc), 2378B (Piezo Technology Incorporated Dba Piezo Technology Inc).
Key specifications for 2378F: Mode of Oscillation: FUNDAMENTAL; Operating Temp Range: -30.0 TO 70.0 CELSIUS DEGC; Specified Frequency: 21.400 MEGAHERTZ. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5955-01-374-1189 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.