The Oscillator,crystal Controlled, cataloged under National Stock Number 5955-01-155-4979, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government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 | 5955-01-155-4979 |
| Item Name | Oscillator,crystal Controlled |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Status | ACTIVE |
| Circuit Construction Type | SOLID STATE |
| Inclosure Type | HERMETICALLY SEALED |
| Control Type | REMOTE |
| Frequency Per Channel | 540.0 KILOHERTZ NOMINAL OPERATING CHANNEL |
| Connection Type | PIN BOTTOM |
| Connection Contact Type and Quantity | 14 PIN EXTERNAL |
| Operating Control Method | AUTOMATIC |
| Basic Shape Style | RECTANGULAR OR SQUARE |
| Identification Designator | M55310/15-B05A540.000KHZ-81349 KHz |
| Specification/standard Data | 81349-MIL-O-55310/15 GOVERNMENT SPECIFICATION |
| Storage Temp Range | -60.0 TO 125.0 CELSIUS DEGC |
| Average Life Measurement | NOT RATED |
| Environmental Protection | SHOCK RESISTANT AND VIBRATION |
| Operating Temp Range | -55.0 TO 110.0 CELSIUS DEGC |
| Test Data Document | 81349-MIL-O-55310 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Installation Design | MODULE |
| External DC Operating Voltage in Volts | 10.0 NOMINAL SINGLE VOLTAGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MIL-O-55310/15 | 5/9 Secondary reference U.S. Government activity |
| M55310/15-B05A540K0000 | 2/2 Government specification standardization U.S. Government activity |
| MIL-PRF-55310/15 | 4/1 Identification reference U.S. Government activity |
NSN 5955-01-155-4979 is a Oscillator,crystal Controlled, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
8 possible matches (shared part number, not a government interchangeability claim): 5955-01-165-1893, 5955-01-172-1052, 5955-01-200-0968. Verify interchangeability with system specifications before substitution.
Key specifications for 5955-01-155-4979: Circuit Construction Type: SOLID STATE; Overall Height: 0.400 INCHES NOMINAL IN; Inclosure Type: HERMETICALLY SEALED; Control Type: REMOTE. 17 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 5955-01-155-4979 has DEMIL Code B. 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.