The Oscillator,crystal Controlled, cataloged under National Stock Number 5955-01-188-2040, 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. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5955-01-188-2040 |
| Primary Part Number | 166279 |
| Item Name | Oscillator,crystal Controlled |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Circuit Construction Type | SOLID STATE |
| Inclosure Type | HERMETICALLY SEALED |
| Control Type | LOCAL |
| Frequency Per Channel | 512.0 KILOHERTZ NOMINAL OPERATING CHANNEL |
| Connection Type | PIN BOTTOM |
| Connection Contact Type and Quantity | 14 PIN EXTERNAL |
| Operating Control Method | MANUAL |
| Basic Shape Style | RECTANGULAR OR SQUARE |
| Average Life Measurement | NOT RATED |
| Installation Design | MODULE |
| External DC Operating Voltage in Volts | 6.75 NOMINAL SINGLE VOLTAGE |
| 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 |
|---|---|
| 166279 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| 5015-008 | Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled (USA) |
| MC753A1-001 | Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled (USA) |
| MCM606 | Q-Tech Corp Dba Q-Tech Corp (USA) |
| Reference | Meaning |
|---|---|
| 5015-008 | 5/9 Secondary reference Spectrum Technology Inc |
NSN 5955-01-188-2040 is a Oscillator,crystal Controlled, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-188-2040 has 4 manufacturer part numbers on file: 166279 (Northrop Grumman Systems Corporation), 5015-008 (Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled), MC753A1-001 (Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled), MCM606 (Q-Tech Corp Dba Q-Tech Corp).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-194-6308. Verify interchangeability with system specifications before substitution.
Key specifications for 166279: Circuit Construction Type: SOLID STATE; Overall Height: 0.400 INCHES NOMINAL IN; Inclosure Type: HERMETICALLY SEALED; Control Type: LOCAL. 11 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.