The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-293-9991, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Monitor Products Co. Inc. Dba Monitor Products Co. Inc.. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5955-01-293-9991 |
| Primary Part Number | MM18N1C3A-8.000MHZ |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Monitor Products Co. Inc. Dba Monitor Products Co. Inc. |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.005 TO 0.005 |
| Terminal Diameter | 0.017 INCHES NOMINAL IN |
| Terminal Length | 0.787 INCHES NOMINAL IN |
| Mode of Oscillation | FUNDAMENTAL |
| Body Width | 0.402 INCHES MAXIMUM IN |
| Equivalent Resistance Value in Ohms | 40.0 NOMINAL |
| Overall Thickness | 0.183 INCHES MAXIMUM IN |
| Style Designator | OVAL BODY, WIRE LEADS |
| Drive Level Rating | 2.0 MILLIWATTS NOMINAL |
| Center to Center Distance Between Terminals | 0.192 INCHES NOMINAL IN |
| Load Capacitance in Picofarads | 20.0 NOMINAL |
| Circuit Resonance | ANTIRESONANCE |
| Operating Temp Range | -20.0 TO 70.0 CELSIUS DEGC |
| Specified Frequency | 8.000 MEGAHERTZ |
| Body Thickness | 0.150 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 |
|---|---|
| VF800A-8.0000MHZ | Cts Valpey Corporation (USA) |
| MM49N1C3A-8.000MHZ | Monitor Products Co. Inc. Dba Monitor Products Co. Inc. (USA) |
| MM18N1C3A-8.000MHZ PRIMARY | Monitor Products Co. Inc. Dba Monitor Products Co. Inc. (USA) |
| DS800A | Seiko Instruments U.s.a. Inc. (USA) |
| Reference | Meaning |
|---|---|
| 310062-1 | 5/9 Secondary reference L3 Communications Telemetry-West Div Telemetry-West |
| 310062-1 | C/1 Advisory reference — outside the item-of-supply concept L3 Technologies, Inc. Dba Telementry & Rf Products Div L3 Technologies, Telemetry & Rf Products |
NSN 5955-01-293-9991 is a Crystal Unit,quartz, manufactured by Monitor Products Co. Inc. Dba Monitor Products Co. Inc., classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-293-9991 has 4 manufacturer part numbers on file: VF800A-8.0000MHZ (Cts Valpey Corporation), MM49N1C3A-8.000MHZ (Monitor Products Co. Inc. Dba Monitor Products Co. Inc.), MM18N1C3A-8.000MHZ (Monitor Products Co. Inc. Dba Monitor Products Co. Inc.), DS800A (Seiko Instruments U.s.a. Inc.).
Key specifications for MM18N1C3A-8.000MHZ: Frequency Tolerance for Operating Temp in Percent: -0.005 TO 0.005; Terminal Diameter: 0.017 INCHES NOMINAL IN; Terminal Length: 0.787 INCHES NOMINAL IN; Mode of Oscillation: FUNDAMENTAL. 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.
NSN 5955-01-293-9991 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.