The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-129-5680, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-00-129-5680 |
| 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 Length | 0.812 INCHES NOMINAL IN |
| Mode of Oscillation | FUNDAMENTAL |
| Equivalent Resistance Value in Ohms | 450.0 NOMINAL |
| Overall Thickness | 0.750 INCHES NOMINAL IN |
| Style Designator | FINGER GRIP BODY, PIN TERMINALS |
| Body Length | 2.094 INCHES NOMINAL IN |
| Center to Center Distance Between Terminals | 0.750 INCHES NOMINAL IN |
| Load Capacitance in Picofarads | 40.0 NOMINAL AND 39.5 MINIMUM AND 40.5 MAXIMUM |
| Circuit Resonance | ANTIRESONANCE |
| Operating Temp Range | -40.0 TO 70.0 CELSIUS DEGC |
| Test Data Document | 81349-MILC10405 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | PLASTIC COVER HOLDER |
| Specified Frequency | 2.4425 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 |
|---|---|
| MILC10405 | 4/1 Identification reference U.S. Government activity |
NSN 5955-00-129-5680 is a Crystal Unit,quartz, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
5 possible matches (shared part number, not a government interchangeability claim): 5955-00-129-5793, 5955-00-129-5872, 5955-00-129-8243. Verify interchangeability with system specifications before substitution.
Key specifications for 5955-00-129-5680: Frequency Tolerance for Operating Temp in Percent: -0.010 TO 0.010; Terminal Length: 0.812 INCHES NOMINAL IN; Mode of Oscillation: FUNDAMENTAL; Equivalent Resistance Value in Ohms: 450.0 NOMINAL. 14 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.