The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-421-6552, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-01-421-6552 |
| Primary Part Number | 2887378-4 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.0005 TO 0.0005 |
| Equivalent Resistance Value in Ohms | 50.0 NOMINAL |
| Shunt Capacitance in Picofarads | 3.5 NOMINAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2887378-4 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 2887378-4 PRIMARY | Raytheon Company Div Corp (USA) |
| 2887378-4 | Raytheon Company Dba Raytheon Co (USA) |
| Reference | Meaning |
|---|---|
| 0098LLTA49915 | 5/9 Secondary reference Marinekommando |
NSN 5955-01-421-6552 is a Crystal Unit,quartz, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-421-6552 has 3 manufacturer part numbers on file: 2887378-4 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 2887378-4 (Raytheon Company Div Corp), 2887378-4 (Raytheon Company Dba Raytheon Co).
Key specifications for 2887378-4: Frequency Tolerance for Operating Temp in Percent: -0.0005 TO 0.0005; Equivalent Resistance Value in Ohms: 50.0 NOMINAL; Shunt Capacitance in Picofarads: 3.5 NOMINAL. 3 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.