The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-256-3313, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is L3harris Technologies, Inc. Dba Harris Corporation. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-00-256-3313 |
| Primary Part Number | SM-A-684334 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | L3harris Technologies, Inc. Dba Harris Corporation |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.001 TO 0.001 |
| Terminal Diameter | 0.050 INCHES NOMINAL IN |
| Terminal Length | 0.183 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN |
| Mode of Oscillation | FUNDAMENTAL |
| Body Width | 0.715 INCHES MINIMUM AND 0.722 INCHES MAXIMUM IN |
| Equivalent Resistance Value in Ohms | 40.0 NOMINAL |
| Overall Thickness | 0.340 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN |
| Style Designator | OVAL BODY, PIN TERMINALS |
| Drive Level Rating | 3.0 MILLIWATTS MAXIMUM |
| Body Length | 0.765 INCHES NOMINAL IN |
| Center to Center Distance Between Terminals | 0.486 INCHES NOMINAL IN |
| Circuit Resonance | SERIES RESONANCE |
| Shunt Capacitance in Picofarads | 4.5 NOMINAL |
| Operating Temp Range | -32.0 TO 85.0 CELSIUS DEGC |
| Specified Frequency | 4915.200 KILOHERTZ |
| Body Thickness | 0.310 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SM-A-684334 | L3harris Technologies, Inc. Dba Harris Corporation (USA) |
| SM-A-684334 | Cts Valpey Corporation (USA) |
| Reference | Meaning |
|---|---|
| SM-A-684334 | 3/2 Design control — primary reference U.S. Government activity |
| SM-A-684334 | 5/9 Secondary reference Trw Electronics and Defense Sector Rf Devices |
| SM-A-684334 | 5/9 Secondary reference Itt Industries Inc Itt Aerospace Communications Div East |
NSN 5955-00-256-3313 is a Crystal Unit,quartz, manufactured by L3harris Technologies, Inc. Dba Harris Corporation, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-00-256-3313 has 2 manufacturer part numbers on file: SM-A-684334 (L3harris Technologies, Inc. Dba Harris Corporation), SM-A-684334 (Cts Valpey Corporation).
Key specifications for SM-A-684334: Frequency Tolerance for Operating Temp in Percent: -0.001 TO 0.001; Terminal Diameter: 0.050 INCHES NOMINAL IN; Terminal Length: 0.183 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN; Mode of Oscillation: FUNDAMENTAL. 16 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 5955-00-256-3313 has DEMIL Code B. 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.