The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-166-9706, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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 | 5955-00-166-9706 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.003 TO 0.003 |
| Terminal Diameter | 0.018 INCHES NOMINAL IN |
| Terminal Length | 1.500 INCHES MINIMUM IN |
| Mode of Oscillation | THIRD OVERTONE |
| Body Width | 0.400 INCHES NOMINAL IN |
| Equivalent Resistance Value in Ohms | 40.0 MAXIMUM |
| Overall Thickness | 0.183 INCHES MAXIMUM IN |
| Style Designator | OVAL BODY, WIRE LEADS |
| Drive Level Rating | 2.0 MILLIWATTS MAXIMUM |
| Center to Center Distance Between Terminals | 0.184 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Circuit Resonance | SERIES RESONANCE |
| Shunt Capacitance in Picofarads | 7.0 MAXIMUM |
| Operating Temp Range | -30.0 TO 60.0 CELSIUS DEGC |
| Specified Frequency | 25.000 MEGAHERTZ |
| Body Thickness | 0.156 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| CSM1-25MHZ | 5/9 Secondary reference International Crystal Manufacturing Company Dba Icm |
| 10245-1 | 3/9 Design control — primary reference Jhp Industrial Supply Co Inc Microwave Technology Div |
| 436260-25.000MHZ | 5/9 Secondary reference International Crystal Manufacturing Company Dba Icm |
| CSM125MHZ001 | C/1 Advisory reference — outside the item-of-supply concept International Crystal Manufacturing Company Dba Icm |
NSN 5955-00-166-9706 is a Crystal Unit,quartz, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
7 possible matches (shared part number, not a government interchangeability claim): 5340-00-237-8214, 6220-00-299-7166, 1270-00-313-6351. Verify interchangeability with system specifications before substitution.
Key specifications for 5955-00-166-9706: Frequency Tolerance for Operating Temp in Percent: -0.003 TO 0.003; Terminal Diameter: 0.018 INCHES NOMINAL IN; Terminal Length: 1.500 INCHES MINIMUM IN; Mode of Oscillation: THIRD OVERTONE. 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.
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.