The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-221-8178, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Leonardo Uk Ltd. Government technical data includes 19 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-01-221-8178 |
| Primary Part Number | VA-09-0296-002 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Leonardo Uk Ltd |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.002 TO 0.002 AND -0.003 TO 0.003 |
| Terminal Diameter | 0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN |
| Terminal Length | 0.5003 INCHES MINIMUM IN |
| Mode of Oscillation | FUNDAMENTAL |
| Body Width | 0.402 INCHES MAXIMUM IN |
| Equivalent Resistance Value in Ohms | 75.0 MAXIMUM |
| Overall Thickness | 0.183 INCHES MAXIMUM IN |
| Style Designator | OVAL BODY, PIN TERMINALS |
| Drive Level Rating | 4.0 MILLIWATTS MINIMUM AND 6.0 MILLIWATTS MAXIMUM |
| Specification/standard Data | 81349-MIL-C-3098/47 GOVERNMENT SPECIFICATION |
| Center to Center Distance Between Terminals | 0.184 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Load Capacitance in Picofarads | 29.5 MINIMUM AND 30.5 MAXIMUM |
| Circuit Resonance | ANTIRESONANCE |
| Shunt Capacitance in Picofarads | 7.0 MAXIMUM |
| Operating Temp Range | -40.0 TO 90.0 CELSIUS AND -55.0 TO 105.0 CELSIUS DEGC |
| Test Data Document | 81349-MIL-C-3098/62 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | GLASS COVER HOLDER |
| Specified Frequency | 6.000 MEGAHERTZ |
| Body Thickness | 0.150 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 |
|---|---|
| VA-09-0296-002 | Leonardo Uk Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 289-7217-030 | C/1 Advisory reference — outside the item-of-supply concept Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| MIL-C-3098/47 | 5/9 Secondary reference U.S. Government activity |
| MIL-PRF-3098/47 | 4/1 Identification reference U.S. Government activity |
| CR-69A/U6.00000MHZ | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| CR69/U6M000000 | 2/2 Government specification standardization U.S. Government activity |
NSN 5955-01-221-8178 is a Crystal Unit,quartz, manufactured by Leonardo Uk Ltd, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-221-8178 has 1 manufacturer part number on file: VA-09-0296-002 (Leonardo Uk Ltd).
Key specifications for VA-09-0296-002: Frequency Tolerance for Operating Temp in Percent: -0.002 TO 0.002 AND -0.003 TO 0.003; Terminal Diameter: 0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN; Terminal Length: 0.5003 INCHES MINIMUM IN; Mode of Oscillation: FUNDAMENTAL. 19 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.