NSN 5955-01-550-7768 — this item is cataloged by the U.S. Government under National Stock Number 5955-01-550-7768. Manufacturer of record part number: 87-399-RB2UA.
Also searched as5955-01-550-7768 ·
5955015507768 ·
NIIN 015507768 ·
01-550-7768 ·
FSC 5955 Oscillators and Piezoelectric Crystals · CAGE 56738 · 87-399-RB2UA · 4303240-105
FSC: 5955 — Oscillators and Piezoelectric Crystals
FSG: 59 — Electrical and Electronic Equipment Components
Primary part number: 87-399-RB2UA
Manufacturer: Symmetricom, Inc
General Description
The Oscillator Subassembly, cataloged under National Stock Number 5955-01-550-7768, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Symmetricom, Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5955-01-550-7768
Primary Part Number
87-399-RB2UA
Item Name
Oscillator Subassembly
FSC / FSG
5955 / 59 — Oscillators and Piezoelectric Crystals
Other items in FSC 5955 — Oscillators and Piezoelectric Crystals
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5955-00-001-1622
5955-00-001-1622 · Item name not on file
5955-00-001-2933
5955-00-001-2933 · Item name not on file
5955-00-001-2977
CRYSTAL UNIT,QUARTZ
5955-00-001-3014
CRYSTAL UNIT,QUARTZ
5955-00-001-3242
5955-00-001-3242 · Item name not on file
5955-00-001-3243
5955-00-001-3243 · Item name not on file
5955-00-001-3244
5955-00-001-3244 · Item name not on file
5955-00-001-3328
CRYSTAL UNIT,QUARTZ
Frequently Asked Questions
What is NSN 5955-01-550-7768?
NSN 5955-01-550-7768 is a Oscillator Subassembly, manufactured by Symmetricom, Inc, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
What part numbers are listed for NSN 5955-01-550-7768?
NSN 5955-01-550-7768 has 2 manufacturer part numbers on file: 87-399-RB2UA (Symmetricom, Inc), 4303240-105 (Northrop Grumman Systems Corporation).
What are the specifications of 87-399-RB2UA?
Key specifications for 87-399-RB2UA: Special Features: RUBIDIUM OSCILLATOR UPRADE OPTION 2U; 10 MHZ MHz; End Item Identification: USED ON XLI 1510-652 MODEL TIME/FREQUENCY OSCILLATOR. 0 specifications are documented in the U.S. Government catalog.
Is NSN 5955-01-550-7768 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.