The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-227-8909, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Aimtron Systems, Llc. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5955-01-227-8909 |
| Primary Part Number | 409524 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Aimtron Systems, Llc |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.001 TO 0.001 AND -0.003 TO 0.003 |
| Terminal Diameter | 0.040 INCHES NOMINAL IN |
| Terminal Length | 0.221 INCHES MINIMUM AND 0.246 INCHES MAXIMUM IN |
| Mode of Oscillation | FUNDAMENTAL |
| Body Width | 0.402 INCHES MAXIMUM IN |
| Equivalent Resistance Value in Ohms | 25.0 NOMINAL |
| Overall Thickness | 0.183 INCHES MAXIMUM IN |
| Style Designator | SQUARE BODY |
| Drive Level Rating | 5.0 MILLIWATTS NOMINAL AND 4.0 MILLIWATTS MINIMUM AND 6.0 MILLIWATTS MAXIMUM |
| Body Length | 0.530 INCHES MAXIMUM IN |
| Center to Center Distance Between Terminals | 0.192 INCHES NOMINAL IN |
| Circuit Resonance | SERIES RESONANCE |
| Operating Temp Range | -10.0 TO 70.0 CELSIUS DEGC |
| Material | GLASS COVER HOLDER |
| Specified Frequency | 18.000 MEGAHERTZ AND 19.700 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 |
|---|---|
| 409524 PRIMARY | Aimtron Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 409524 | 5/9 Secondary reference Cardion Inc |
NSN 5955-01-227-8909 is a Crystal Unit,quartz, manufactured by Aimtron Systems, Llc, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-227-8909 has 1 manufacturer part number on file: 409524 (Aimtron Systems, Llc).
Key specifications for 409524: Frequency Tolerance for Operating Temp in Percent: -0.001 TO 0.001 AND -0.003 TO 0.003; Terminal Diameter: 0.040 INCHES NOMINAL IN; Terminal Length: 0.221 INCHES MINIMUM AND 0.246 INCHES MAXIMUM IN; Mode of Oscillation: FUNDAMENTAL. 16 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.