The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-994-9971, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-00-994-9971 |
| Primary Part Number | 132109-014 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.002 TO 0.002 AND -0.007 TO 0.007 |
| Terminal Diameter | 0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN |
| Terminal Length | 1.500 INCHES MINIMUM AND 1.525 INCHES MAXIMUM IN |
| Mode of Oscillation | THIRD OVERTONE AND FIFTH OVERTONE |
| Body Width | 0.402 INCHES MAXIMUM IN |
| Equivalent Resistance Value in Ohms | 40.0 NOMINAL |
| Overall Thickness | 0.183 INCHES MAXIMUM IN |
| Style Designator | TUBE TYPE, 4 WIRE LEADS |
| Drive Level Rating | 1.0 MILLIWATTS NOMINAL AND 0.8 MILLIWATTS MINIMUM AND 1.2 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 | 4.0 NOMINAL |
| Operating Temp Range | -55.0 TO 90.0 CELSIUS DEGC |
| Material | GLASS COVER HOLDER |
| Specified Frequency | 43.33333 KILOHERTZ |
| Body Thickness | 0.150 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 132109-014 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
NSN 5955-00-994-9971 is a Crystal Unit,quartz, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-00-994-9971 has 1 manufacturer part number on file: 132109-014 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).
Key specifications for 132109-014: Frequency Tolerance for Operating Temp in Percent: -0.002 TO 0.002 AND -0.007 TO 0.007; Terminal Diameter: 0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN; Terminal Length: 1.500 INCHES MINIMUM AND 1.525 INCHES MAXIMUM IN; Mode of Oscillation: THIRD OVERTONE AND FIFTH OVERTONE. 16 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.