The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-989-3679, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-00-989-3679 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.005 TO 0.005 |
| Terminal Diameter | 0.048 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN |
| Terminal Length | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Mode of Oscillation | FUNDAMENTAL |
| Overall Thickness | 0.333 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN |
| Style Designator | OVAL BODY, PIN TERMINALS |
| Body Length | 0.725 INCHES MINIMUM AND 0.775 INCHES MAXIMUM IN |
| Center to Center Distance Between Terminals | 0.478 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN |
| Circuit Resonance | SERIES RESONANCE |
| Shunt Capacitance in Picofarads | 4.0 MINIMUM AND 6.0 MAXIMUM |
| Operating Temp Range | +20.0 TO 60.0 CELSIUS DEGC |
| Specified Frequency | 6.000 MEGAHERTZ |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 706956 | 3/9 Design control — primary reference U.S. Government activity |
| VR6-6MC | 5/9 Secondary reference Valtec Corp Optical Group |
NSN 5955-00-989-3679 is a Crystal Unit,quartz, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
Key specifications for 5955-00-989-3679: Frequency Tolerance for Operating Temp in Percent: -0.005 TO 0.005; Terminal Diameter: 0.048 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN; Terminal Length: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN; Mode of Oscillation: FUNDAMENTAL. 12 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.
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.