The Oscillator,crystal Controlled, cataloged under National Stock Number 5955-01-399-0551, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Oscillator,crystal Controlled |
| FSC / FSG | 5955 — Oscillators and Piezoelectric Crystals (FSG 59) |
| Manufacturers | Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems (CAGE 50027) |
| Parameter | Value |
|---|---|
| NSN | 5955-01-399-0551 |
| Primary Part Number | 9999-4401-001 |
| Item Name | Oscillator,crystal Controlled |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 9999-4401-001 PRIMARY | Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems (USA) |
| Reference | Meaning |
|---|---|
| CO-442D-2B-8.192MHZ | C/1 Advisory reference — outside the item-of-supply concept Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled |
| 4130-011-8.192MHZ | 5/9 Secondary reference Spectrum Technology Inc |
| CO-442D-2B-8.192MHZ | 5/9 Secondary reference Vectron International Div. of Dover Electronics Inc |
| 4130-001-8.192MH | C/1 Advisory reference — outside the item-of-supply concept Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled |
NSN 5955-01-399-0551 is a Oscillator,crystal Controlled, manufactured by Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-399-0551 has 1 manufacturer part number on file: 9999-4401-001 (Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems).
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 5955-01-399-0551 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.