The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-923-8299, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-00-923-8299 |
| Primary Part Number | 2521304-1 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Controlled Reference Temp | 75.0 CELSIUS DEGC |
| Operable Temp Range | +0.0 TO 80.0 CELSIUS DEGC |
| Frequency Tolerance for Operating Temp in Percent | -0.002 TO 0.002 AND -0.007 TO 0.007 |
| Terminal Diameter | 0.050 INCHES NOMINAL IN |
| Frequency Tolerance at Reference Temp in Percent | -0.0005 TO 0.0005 |
| Terminal Length | 0.236 INCHES NOMINAL IN |
| Mode of Oscillation | FIFTH OVERTONE |
| Equivalent Resistance Value in Ohms | 40.0 NOMINAL |
| Frequency Stability in Percent | -0.0002 TO 0.0002 |
| Overall Thickness | 0.352 INCHES MAXIMUM IN |
| Style Designator | RECTANGULAR BODY, PIN TERMINALS |
| Drive Level Rating | 2.0 MILLIWATTS NOMINAL AND 1.8 MILLIWATTS MINIMUM AND 2.2 MILLIWATTS MAXIMUM |
| Body Length | 0.775 INCHES MAXIMUM IN |
| Center to Center Distance Between Terminals | 0.486 INCHES NOMINAL IN |
| Circuit Resonance | SERIES RESONANCE |
| Shunt Capacitance in Picofarads | 5.5 MAXIMUM |
| Operating Temp Range | +70.0 TO 80.0 CELSIUS DEGC |
| Test Data Document | 10001-2521304 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2521304-1 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 2521304-1REVC | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| RG1-904-218 | 5/1 Secondary reference Philips Electronics Ltd |
NSN 5955-00-923-8299 is a Crystal Unit,quartz, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-00-923-8299 has 2 manufacturer part numbers on file: 2521304-1 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 2521304-1REVC (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
9 possible matches (shared part number, not a government interchangeability claim): 5955-00-923-8300, 5955-00-923-8301, 5955-00-923-8302. Verify interchangeability with system specifications before substitution.
Key specifications for 2521304-1: Controlled Reference Temp: 75.0 CELSIUS DEGC; Operable Temp Range: +0.0 TO 80.0 CELSIUS DEGC; Frequency Tolerance for Operating Temp in Percent: -0.002 TO 0.002 AND -0.007 TO 0.007; Terminal Diameter: 0.050 INCHES NOMINAL IN. 18 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 5955-00-923-8299 has DEMIL Code D. 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.