The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-207-3573, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Department of the Army Hq United States Army Communications Research and Development Command. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-01-207-3573 |
| Primary Part Number | B4028185 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Department of the Army Hq United States Army Communications Research and Development Command |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.0025 TO 0.0025 AND -0.0025 TO 0.0025 AND -0.005 TO 0.005-0.005 TO 0.005 |
| Terminal Diameter | 0.018 INCHES NOMINAL0.018 INCHES NOMINAL IN |
| Overall Diameter | 0.420 INCHES MAXIMUM0.420 INCHES MAXIMUM IN |
| Terminal Length | 0.600 INCHES MINIMUM0.600 INCHES MINIMUM IN |
| Mode of Oscillation | THIRD OVERTONE AND THIRD OVERTONE AND FIFTH OVERTONEFIFTH OVERTONE |
| Equivalent Resistance Value in Ohms | 50.0 MAXIMUM50.0 MAXIMUM |
| Style Designator | HAT TYPE, 3 WIRE LEADS |
| Diameter | 0.326 INCHES MAXIMUM0.326 INCHES MAXIMUM IN |
| Drive Level Rating | 2.0 MILLIWATTS NOMINAL AND 2.0 MILLIWATTS NOMINAL AND 1.6 MILLIWATTS MINIMUM AND 1.6 MILLIWATTS MINIMUM AND 2.4 MILLIWATTS MAXIMUM2.4 MILLIWATTS MAXIMUM |
| Center to Center Distance Between Terminals | 0.200 INCHES NOMINAL0.200 INCHES NOMINAL IN |
| Circuit Resonance | SERIES RESONANCESERIES RESONANCE |
| Shunt Capacitance in Picofarads | 7.0 MAXIMUM7.0 MAXIMUM |
| Operating Temp Range | -55.0 TO 105.0 CELSIUS AND -55.0 TO 105.0 CELSIUS AND -55.0 TO 125.0 CELSIUS-55.0 TO 125.0 CELSIUS DEGC |
| Material | GLASS COVER HOLDER |
| Specified Frequency | 79.9995 MEGAHERTZ79.9995 MEGAHERTZ |
| 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 |
|---|---|
| B4028185 PRIMARY | Department of the Army Hq United States Army Communications Research and Development Command (USA) |
| Reference | Meaning |
|---|---|
| B4028185 | 5/2 Secondary reference U.S. Government activity |
NSN 5955-01-207-3573 is a Crystal Unit,quartz, manufactured by Department of the Army Hq United States Army Communications Research and Development Command, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-207-3573 has 1 manufacturer part number on file: B4028185 (Department of the Army Hq United States Army Communications Research and Development Command).
Key specifications for B4028185: Frequency Tolerance for Operating Temp in Percent: -0.0025 TO 0.0025 AND -0.0025 TO 0.0025 AND -0.005 TO 0.005-0.005 TO 0.005; Terminal Diameter: 0.018 INCHES NOMINAL0.018 INCHES NOMINAL IN; Overall Diameter: 0.420 INCHES MAXIMUM0.420 INCHES MAXIMUM IN; Terminal Length: 0.600 INCHES MINIMUM0.600 INCHES MINIMUM IN. 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.