The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-220-0868, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Nel Frequency Controls Inc Dba Nel Frequency Controls Inc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-01-220-0868 |
| Primary Part Number | NE-33D AT 250.217KHZ |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Nel Frequency Controls Inc Dba Nel Frequency Controls Inc |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.005 TO 0.005 AND -0.010 TO 0.010 |
| Terminal Diameter | 0.050 INCHES NOMINAL IN |
| Terminal Length | 0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN |
| Mode of Oscillation | FUNDAMENTAL |
| Body Width | 0.725 INCHES MAXIMUM IN |
| Equivalent Resistance Value in Ohms | 20.0 NOMINAL |
| Overall Thickness | 0.352 INCHES MAXIMUM IN |
| Style Designator | OVAL BODY, PIN TERMINALS |
| Drive Level Rating | 2.0 MILLIWATTS MAXIMUM |
| Body Length | 0.775 INCHES MAXIMUM IN |
| Center to Center Distance Between Terminals | 0.486 INCHES NOMINAL IN |
| Circuit Resonance | SERIES RESONANCE |
| Operating Temp Range | +0.1 TO 50.0 CELSIUS AND -40.0 TO 70.0 CELSIUS DEGC |
| Specified Frequency | 250.217 KILOHERTZ |
| Body Thickness | 0.317 INCHES MAXIMUM IN |
| 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 |
|---|---|
| NE-33D AT 250.217KHZ PRIMARY | Nel Frequency Controls Inc Dba Nel Frequency Controls Inc (USA) |
NSN 5955-01-220-0868 is a Crystal Unit,quartz, manufactured by Nel Frequency Controls Inc Dba Nel Frequency Controls Inc, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-220-0868 has 1 manufacturer part number on file: NE-33D AT 250.217KHZ (Nel Frequency Controls Inc Dba Nel Frequency Controls Inc).
Key specifications for NE-33D AT 250.217KHZ: Frequency Tolerance for Operating Temp in Percent: -0.005 TO 0.005 AND -0.010 TO 0.010; Terminal Diameter: 0.050 INCHES NOMINAL IN; Terminal Length: 0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN; Mode of Oscillation: FUNDAMENTAL. 15 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.