The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-665-3402, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-00-665-3402 |
| 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 | 0.238 INCHES NOMINAL IN |
| Mode of Oscillation | FIFTH OVERTONE |
| Overall Thickness | 0.338 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN |
| Style Designator | OVAL BODY, PIN TERMINALS |
| Body Length | 0.765 INCHES NOMINAL IN |
| Center to Center Distance Between Terminals | 0.478 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN |
| Operating Temp Range | -55.0 TO 90.0 CELSIUS DEGC |
| Specified Frequency | 53.700 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 |
|---|---|
| CR-23/U53.700000MHZ | 2/2 Government specification standardization U.S. Government activity |
NSN 5955-00-665-3402 is a Crystal Unit,quartz, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5955-00-879-7963. Verify interchangeability with system specifications before substitution.
Key specifications for 5955-00-665-3402: 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: 0.238 INCHES NOMINAL IN; Mode of Oscillation: FIFTH OVERTONE. 10 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.