PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51864Retainer,bearing

Parker Hannifin Corporation Div Hydraulic Systems Division · NSN 3120-00-688-8527 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-688-8527 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-688-8527. Primary manufacturer part number: 51864.
Features
  • Retainer,bearing — FSC 3120
  • 1 verified cross-reference
  • Primary manufacturer: Parker Hannifin Corporation Div Hydraulic Systems Division
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
General Description

The Retainer,bearing, cataloged under National Stock Number 3120-00-688-8527, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Parker Hannifin Corporation Div Hydraulic Systems Division. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRetainer,bearing
FSC / FSG3120 — No Item Name Available (FSG 31)
ManufacturersParker Hannifin Corporation Div Hydraulic Systems Division (CAGE 93835)
Technical Specifications
ParameterValue
NSN3120-00-688-8527
Primary Part Number51864
Item NameRetainer,bearing
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Hydraulic Systems Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5940-00-113-8179MS25036-107 INTERCHANGEABLE
Terminal,lug
Sae International Dba Sae International
4720-00-411-38655186-4 INTERCHANGEABLE
Hose,air Duct
Flexco, Inc
4820-01-183-25965-1864 PIECE 19 INTERCHANGEABLE
Disk,valve
Mark Controls Corp Pacific Valves Div
4820-01-192-35225-1864 PIECE 21 6IN INTERCHANGEABLE
Seat,valve
Mark Controls Corp Pacific Valves Div
5340-01-699-360351864 INTERCHANGEABLE
Seat,helical Compression Spring
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
Cross-Reference Index
Part NumberManufacturer
51864 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
Related Parts
5940-00-113-8179INTERCHANGEABLE
TERMINAL,LUG
MS25036-107
4720-00-411-3865INTERCHANGEABLE
HOSE,AIR DUCT
5186-4
4820-01-183-2596INTERCHANGEABLE
DISK,VALVE
5-1864 PIECE 19
4820-01-192-3522INTERCHANGEABLE
SEAT,VALVE
5-1864 PIECE 21 6IN
5340-01-699-3603INTERCHANGEABLE
SEAT,HELICAL COMPRESSION SPRING
51864

Frequently Asked Questions

What is NSN 3120-00-688-8527?

NSN 3120-00-688-8527 is a Retainer,bearing, manufactured by Parker Hannifin Corporation Div Hydraulic Systems Division, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-688-8527?

NSN 3120-00-688-8527 has 1 cross-referenced part number: 51864 (Parker Hannifin Corporation Div Hydraulic Systems Division).

What NSN replaces 3120-00-688-8527?

There are 5 known substitutes for 3120-00-688-8527: 5940-00-113-8179, 4720-00-411-3865, 4820-01-183-2596 and 2 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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