The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-260-6595, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 13 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. 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 | 5955-01-260-6595 |
| Primary Part Number | 917AS6451 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.0005 TO 0.0005 |
| Terminal Diameter | 0.029 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN |
| Overall Diameter | 0.610 INCHES MAXIMUM IN |
| Terminal Length | 0.281 INCHES MINIMUM IN |
| Mode of Oscillation | FUNDAMENTAL |
| Equivalent Resistance Value in Ohms | 100.0 MAXIMUM |
| Style Designator | HAT TYPE, 5 WIRE LEADS |
| Diameter | 0.505 INCHES MAXIMUM IN |
| Drive Level Rating | 1.0 MILLIWATTS NOMINAL |
| Circuit Resonance | SERIES RESONANCE |
| Shunt Capacitance in Picofarads | 30.0 MAXIMUM |
| Operating Temp Range | -37.0 TO 85.0 CELSIUS DEGC |
| Specified Frequency | 3.420 MEGAHERTZ |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5955-01-260-6595 is a Crystal Unit,quartz, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-260-6595 has 2 manufacturer part numbers on file: 89-53-1 (Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled), 917AS6451 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 5325-01-604-3275. Verify interchangeability with system specifications before substitution.
Key specifications for 917AS6451: Frequency Tolerance for Operating Temp in Percent: -0.0005 TO 0.0005; Terminal Diameter: 0.029 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN; Overall Diameter: 0.610 INCHES MAXIMUM IN; Terminal Length: 0.281 INCHES MINIMUM 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.
NSN 5955-01-260-6595 has DEMIL Code D. 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.