The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-925-8015, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Raytheon Company. Government technical data includes 19 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5955-00-925-8015 |
| Primary Part Number | 537961-6 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Raytheon Company |
| Status | ACTIVE |
| Controlled Reference Temp | 75.0 CELSIUS DEGC |
| Operable Temp Range | -55.0 TO 90.0 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 |
| Terminal Length | 0.238 INCHES NOMINAL IN |
| Mode of Oscillation | FUNDAMENTAL |
| Body Width | 0.725 INCHES MAXIMUM IN |
| Equivalent Resistance Value in Ohms | 50.0 NOMINAL |
| Overall Thickness | 0.200 INCHES NOMINAL IN |
| Style Designator | TUBE BODY, WIRE LEADS |
| Drive Level Rating | 4.0 MILLIWATTS MINIMUM AND 6.0 MILLIWATTS MAXIMUM |
| Body Length | 0.550 INCHES NOMINAL IN |
| Center to Center Distance Between Terminals | 0.275 INCHES NOMINAL IN |
| Load Capacitance in Picofarads | 31.5 MINIMUM AND 32.5 MAXIMUM |
| Circuit Resonance | ANTIRESONANCE |
| Operating Temp Range | +70.0 TO 80.0 CELSIUS AND -55.0 TO 90.0 CELSIUS DEGC |
| Material | GLASS COVER HOLDER |
| Specified Frequency | 3.7375 MEGAHERTZ |
| Body Thickness | 0.317 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 537961-6 PRIMARY | Raytheon Company (USA) |
| 537961-6 | Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled (USA) |
| Reference | Meaning |
|---|---|
| 537961-6 | 5/9 Secondary reference Electronic Research Company |
| 537961-6 | 5/9 Secondary reference Inficon Edc Inc. |
NSN 5955-00-925-8015 is a Crystal Unit,quartz, manufactured by Raytheon Company, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-00-925-8015 has 2 manufacturer part numbers on file: 537961-6 (Raytheon Company), 537961-6 (Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled).
Key specifications for 537961-6: Controlled Reference Temp: 75.0 CELSIUS DEGC; Operable Temp Range: -55.0 TO 90.0 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. 19 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 5955-00-925-8015 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.