The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-311-3704, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Sentry Manufacturing Company. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5955-01-311-3704 |
| Primary Part Number | 289-7283-020 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Sentry Manufacturing Company |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.0025 TO 0.0025 |
| Terminal Diameter | 0.030 INCHES NOMINAL IN |
| Terminal Length | 1.500 INCHES MINIMUM IN |
| Mode of Oscillation | FUNDAMENTAL |
| Body Width | 0.725 INCHES MAXIMUM IN |
| Equivalent Resistance Value in Ohms | 22.0 MAXIMUM |
| Overall Thickness | 0.352 INCHES MAXIMUM IN |
| Style Designator | OVAL BODY, WIRE LEADS W/HOLD DOWN WIRE |
| Drive Level Rating | 2.0 MILLIWATTS MAXIMUM |
| Center to Center Distance Between Terminals | 0.486 INCHES NOMINAL IN |
| Load Capacitance in Picofarads | 17.0 NOMINAL |
| Circuit Resonance | ANTIRESONANCE |
| Operating Temp Range | +0.0 TO 70.0 CELSIUS DEGC |
| Specified Frequency | 12.928 MEGAHERTZ |
| Body Thickness | 0.317 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 289-7283-020 | Sentry Manufacturing Company (USA) |
| 289-7283-020 | Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled (USA) |
| 289-7283-020 | Bliley Technologies Inc (USA) |
| 289-7283-020 | Colorado Crystal Corporation (USA) |
| Reference | Meaning |
|---|---|
| 289-7283-020 | 3/9 Design control — primary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| 289-7283-020 | 5/2 Secondary reference U.S. Government activity |
NSN 5955-01-311-3704 is a Crystal Unit,quartz, manufactured by Sentry Manufacturing Company, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-311-3704 has 4 manufacturer part numbers on file: 289-7283-020 (Sentry Manufacturing Company), 289-7283-020 (Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled), 289-7283-020 (Bliley Technologies Inc), 289-7283-020 (Colorado Crystal Corporation).
Key specifications for 289-7283-020: Frequency Tolerance for Operating Temp in Percent: -0.0025 TO 0.0025; Terminal Diameter: 0.030 INCHES NOMINAL IN; Terminal Length: 1.500 INCHES MINIMUM 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.
NSN 5955-01-311-3704 has DEMIL Code Q. 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.