The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-013-2498, 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 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-01-013-2498 |
| Primary Part Number | 247AS-C1917-001 |
| 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 | -0.005 TO 0.005 |
| Terminal Diameter | 0.025 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN |
| Terminal Length | 1.000 INCHES MINIMUM IN |
| Mode of Oscillation | FUNDAMENTAL |
| Body Width | 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN |
| Equivalent Resistance Value in Ohms | 20.0 MAXIMUM |
| Overall Thickness | 0.330 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Style Designator | OVAL BODY, WIRE LEADS |
| Drive Level Rating | 8.0 MILLIWATTS MINIMUM AND 12.0 MILLIWATTS MAXIMUM |
| Center to Center Distance Between Terminals | 0.471 INCHES MINIMUM AND 0.501 INCHES MAXIMUM IN |
| Circuit Resonance | SERIES RESONANCE |
| Operating Temp Range | -55.0 TO 105.0 CELSIUS DEGC |
| Specified Frequency | 7.900 MEGAHERTZ |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| CL-19W7.900000MHZ | Cts Valpey Corporation (USA) |
| 247AS-C1917-001 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| CL-19W | Cts Valpey Corporation (USA) |
NSN 5955-01-013-2498 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 5955-01-013-2498 has 3 manufacturer part numbers on file: CL-19W7.900000MHZ (Cts Valpey Corporation), 247AS-C1917-001 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), CL-19W (Cts Valpey Corporation).
Key specifications for 247AS-C1917-001: Frequency Tolerance for Operating Temp in Percent: -0.005 TO 0.005; Terminal Diameter: 0.025 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN; Terminal Length: 1.000 INCHES MINIMUM IN; Mode of Oscillation: FUNDAMENTAL. 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 5955-01-013-2498 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.