The Oscillator,crystal Controlled, cataloged under National Stock Number 5955-01-005-7902, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Q-Tech Corp Dba Q-Tech Corp. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-01-005-7902 |
| Primary Part Number | MCM191 |
| Item Name | Oscillator,crystal Controlled |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Q-Tech Corp Dba Q-Tech Corp |
| Status | ACTIVE |
| Inclosure Type | HERMETICALLY SEALED |
| Overall Diameter | 0.600 INCHES NOMINAL IN |
| Frequency Per Channel | 1.0 KILOHERTZ NOMINAL OPERATING CHANNEL |
| Basic Shape Style | CYLINDRICAL |
| Operating Temp Range | +0.0 TO 50.0 CELSIUS DEGC |
| External DC Operating Voltage in Volts | 15.0 MAXIMUM SINGLE VOLTAGE |
| External DC Operating Voltage in Volts | 3.5 MINIMUM 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 |
| Part Number | Manufacturer |
|---|---|
| MCM191 PRIMARY | Q-Tech Corp Dba Q-Tech Corp (USA) |
| Reference | Meaning |
|---|---|
| 7330486 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5955-01-005-7902 is a Oscillator,crystal Controlled, manufactured by Q-Tech Corp Dba Q-Tech Corp, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-005-7902 has 1 manufacturer part number on file: MCM191 (Q-Tech Corp Dba Q-Tech Corp).
1 possible match (shared part number, not a government interchangeability claim): 2940-01-534-4096. Verify interchangeability with system specifications before substitution.
Key specifications for MCM191: Inclosure Type: HERMETICALLY SEALED; Overall Diameter: 0.600 INCHES NOMINAL IN; Frequency Per Channel: 1.0 KILOHERTZ NOMINAL OPERATING CHANNEL; Overall Length: 0.350 INCHES NOMINAL IN. 7 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 5955-01-005-7902 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.