The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-249-0734, 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13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5955-00-249-0734 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.040 TO 0.040 |
| Terminal Diameter | 0.125 INCHES NOMINAL IN |
| Overall Diameter | 1.750 INCHES NOMINAL IN |
| Terminal Length | 0.625 INCHES NOMINAL IN |
| Mode of Oscillation | FUNDAMENTAL |
| Equivalent Resistance Value in Ohms | 500.0 NOMINAL |
| Style Designator | ROUND BODY, PIN TERMINALS |
| Drive Level Rating | 10.0 MILLIWATTS NOMINAL |
| Body Length | 0.937 INCHES NOMINAL IN |
| Center to Center Distance Between Terminals | 0.750 INCHES NOMINAL IN |
| Circuit Resonance | SERIES RESONANCE |
| Operating Temp Range | -20.0 TO 70.0 CELSIUS DEGC |
| Specified Frequency | 81.962 KILOHERTZ |
| 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 |
|---|---|
| XLS | 3/9 Design control — primary reference Valtec Corp Optical Group |
NSN 5955-00-249-0734 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): 4240-01-504-5308. Verify interchangeability with system specifications before substitution.
Key specifications for 5955-00-249-0734: Frequency Tolerance for Operating Temp in Percent: -0.040 TO 0.040; Terminal Diameter: 0.125 INCHES NOMINAL IN; Overall Diameter: 1.750 INCHES NOMINAL IN; Terminal Length: 0.625 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.