The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-004-9329, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Instrument Systems Corp. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-01-004-9329 |
| Primary Part Number | C235A086-1 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Instrument Systems Corp |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.005 TO 0.005 |
| Terminal Diameter | 0.015 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN |
| Terminal Length | 0.145 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN |
| Mode of Oscillation | FUNDAMENTAL |
| Body Width | 0.437 INCHES MAXIMUM IN |
| Equivalent Resistance Value in Ohms | 25.0 MAXIMUM |
| Overall Thickness | 0.213 INCHES MAXIMUM IN |
| Style Designator | BRACKET TYPE, WIRE LEADS |
| Drive Level Rating | 4.0 MILLIWATTS MINIMUM AND 6.0 MILLIWATTS MAXIMUM |
| Body Length | 0.530 INCHES MAXIMUM IN |
| Center to Center Distance Between Terminals | 0.190 INCHES MINIMUM AND 0.194 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 | -55.0 TO 105.0 CELSIUS DEGC |
| Specified Frequency | 12.000 MEGAHERTZ |
| Body Thickness | 0.328 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| C235A086-1 | Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled (USA) |
| C235A086-1 PRIMARY | Instrument Systems Corp (USA) |
| Reference | Meaning |
|---|---|
| C235A086-1 | C/1 Advisory reference — outside the item-of-supply concept Murata Erie North America Inc Carlisle Operations |
| C235A086-1 | 5/9 Secondary reference Murata Erie North America Inc State College Opns |
NSN 5955-01-004-9329 is a Crystal Unit,quartz, manufactured by Instrument Systems Corp, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-004-9329 has 2 manufacturer part numbers on file: C235A086-1 (Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled), C235A086-1 (Instrument Systems Corp).
Key specifications for C235A086-1: Frequency Tolerance for Operating Temp in Percent: -0.005 TO 0.005; Terminal Diameter: 0.015 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN; Terminal Length: 0.145 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN; Mode of Oscillation: FUNDAMENTAL. 17 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 5955-01-004-9329 has DEMIL Code B. 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.