The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-577-6899, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-00-577-6899 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Status | ACTIVE |
| Controlled Reference Temp | 75.0 CELSIUS DEGC |
| Operable Temp Range | -75.0 TO 80.0 CELSIUS DEGC |
| Terminal Diameter | 0.031 INCHES NOMINAL IN |
| Second Center to Center Distance Between Terminals | 0.486 INCHES NOMINAL IN |
| Terminal Length | 0.250 INCHES NOMINAL IN |
| Mode of Oscillation | THIRD OVERTONE |
| Body Width | 0.345 INCHES NOMINAL IN |
| Overall Thickness | 0.312 INCHES NOMINAL IN |
| Style Designator | OVAL BODY, PIN TERMINALS |
| Body Length | 1.000 INCHES NOMINAL IN |
| Center to Center Distance Between Terminals | 0.500 INCHES NOMINAL IN |
| Height | 0.765 INCHES NOMINAL IN |
| Specified Frequency | 44.79167 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 |
|---|---|
| MIL-PRF-3098/43 | 4/1 Identification reference U.S. Government activity |
| CR65/U44M79167 | 2/2 Government specification standardization U.S. Government activity |
| MILC3098-43 | 5/9 Secondary reference U.S. Government activity |
| CR-65/U44.791670MHZ | 5/9 Secondary reference U.S. Government activity |
NSN 5955-00-577-6899 is a Crystal Unit,quartz, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
Key specifications for 5955-00-577-6899: Controlled Reference Temp: 75.0 CELSIUS DEGC; Operable Temp Range: -75.0 TO 80.0 CELSIUS DEGC; Terminal Diameter: 0.031 INCHES NOMINAL IN; Second Center to Center Distance Between Terminals: 0.486 INCHES NOMINAL IN. 13 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.