PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

99821Ring,retainer

Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp · NSN 4320-00-795-9880 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-795-9880 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-795-9880. Primary manufacturer part number: 99821.
Features
  • Ring,retainer — FSC 4320
  • 2 verified cross-references
  • Primary manufacturer: Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Ring,retainer, cataloged under National Stock Number 4320-00-795-9880, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRing,retainer
FSC / FSG4320 — No Item Name Available (FSG 43)
ManufacturersWestinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (CAGE 82722); Lexair Inc (CAGE 56607)
Technical Specifications
ParameterValue
NSN4320-00-795-9880
Primary Part Number99821
Item NameRing,retainer
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerWestinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5305-00-038-2837 INTERCHANGEABLE
Screw,machine
5120-00-056-39335120-00-056-3933 INTERCHANGEABLE
Bit,screwdriver
General Services Administration Federal Supply Service
Cross-Reference Index
Part NumberManufacturer
99821 PRIMARY Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
99821 Lexair Inc (USA)
Related Parts
5305-00-038-2837INTERCHANGEABLE
SCREW,MACHINE
5120-00-056-3933INTERCHANGEABLE
BIT,SCREWDRIVER
5120-00-056-3933

Frequently Asked Questions

What is NSN 4320-00-795-9880?

NSN 4320-00-795-9880 is a Ring,retainer, manufactured by Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-795-9880?

NSN 4320-00-795-9880 has 2 cross-referenced part numbers: 99821 (Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp), 99821 (Lexair Inc).

What NSN replaces 4320-00-795-9880?

There are 2 known substitutes for 4320-00-795-9880: 5305-00-038-2837, 5120-00-056-3933. Verify interchangeability with system specifications before substitution.

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