The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-243-2489, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Bliley Technologies Inc. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5955-00-243-2489 |
| Primary Part Number | BL289-7107-590 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Bliley Technologies Inc |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.0025 TO 0.0025 |
| Terminal Diameter | 0.017 INCHES NOMINAL IN |
| Overall Diameter | 0.400 INCHES NOMINAL IN |
| Terminal Length | 0.500 INCHES NOMINAL IN |
| Mode of Oscillation | FIFTH OVERTONE |
| Equivalent Resistance Value in Ohms | 60.0 NOMINAL |
| Style Designator | HAT TYPE, 3 WIRE LEADS |
| Diameter | 0.320 INCHES NOMINAL IN |
| Drive Level Rating | 0.05 MILLIWATTS NOMINAL |
| Center to Center Distance Between Terminals | 0.141 INCHES NOMINAL IN |
| Circuit Resonance | SERIES RESONANCE |
| Shunt Capacitance in Picofarads | 4.5 NOMINAL |
| Operating Temp Range | -30.0 TO 60.0 CELSIUS DEGC |
| Specified Frequency | 10.26875 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 |
|---|---|
| BL289-7107-590 PRIMARY | Bliley Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 289-7107-590 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5955-00-243-2489 is a Crystal Unit,quartz, manufactured by Bliley Technologies Inc, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-00-243-2489 has 1 manufacturer part number on file: BL289-7107-590 (Bliley Technologies Inc).
Key specifications for BL289-7107-590: Frequency Tolerance for Operating Temp in Percent: -0.0025 TO 0.0025; Terminal Diameter: 0.017 INCHES NOMINAL IN; Overall Diameter: 0.400 INCHES NOMINAL IN; Terminal Length: 0.500 INCHES NOMINAL IN. 14 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.