The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-644-3671, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-00-644-3671 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.010 TO 0.010 |
| Terminal Diameter | 0.153 INCHES MINIMUM AND 0.159 INCHES MAXIMUM IN |
| Terminal Length | 0.578 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN |
| Mode of Oscillation | FUNDAMENTAL |
| Style Designator | RECTANGULAR BODY, PIN TERMINALS |
| Body Length | 1.986 INCHES MINIMUM AND 2.064 INCHES MAXIMUM IN |
| Operating Temp Range | -40.0 TO 70.0 CELSIUS DEGC |
| Specified Frequency | 80.321 KILOHERTZ |
| 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 |
| Reference | Meaning |
|---|---|
| CR16U80-321KC | 2/2 Government specification standardization U.S. Government activity |
NSN 5955-00-644-3671 is a Crystal Unit,quartz, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
Key specifications for 5955-00-644-3671: Overall Height: 1.172 INCHES MINIMUM AND 1.202 INCHES MAXIMUM IN; Frequency Tolerance for Operating Temp in Percent: -0.010 TO 0.010; Terminal Diameter: 0.153 INCHES MINIMUM AND 0.159 INCHES MAXIMUM IN; Terminal Length: 0.578 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN. 8 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 5955-00-644-3671 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.