PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

52121Ring,retaining

Hamilton Sundstrand Corporation Dba Collins Aerospace · NSN 5325-00-227-1989 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-227-1989 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-227-1989. Primary manufacturer part number: 52121.
Features
  • Ring,retaining — FSC 5325
  • Material: STEEL
  • Material Document and Classification: AMS 5112 ASSN STD SINGLE MATERIAL RESPONSE
  • Material Diameter: 0.059 INCHES NOMINAL IN
  • Casehardening Indicator: NOT CASEHARDENED
  • End Style: 90 DEGREE PARALLEL
  • Cross-Sectional Shape Style: ROUND
  • Usage Design: EXTERNAL
Applications
  • Applications requiring Steel construction
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-227-1989, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5325-00-227-1989
Primary Part Number52121
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerHamilton Sundstrand Corporation Dba Collins Aerospace
StatusCANCELLED
MaterialSTEEL
Material Document and ClassificationAMS 5112 ASSN STD SINGLE MATERIAL RESPONSE
Material Diameter0.059 INCHES NOMINAL IN
Casehardening IndicatorNOT CASEHARDENED
End Style90 DEGREE PARALLEL
Cross-Sectional Shape StyleROUND
Usage DesignEXTERNAL
Inside Diameter0.671 INCHES MINIMUM AND 0.706 INCHES MAXIMUM IN
Outside Diameter0.824 INCHES NOMINAL IN
Ring StyleSTRAIGHT GAP
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
4320-00-115-2459B2-2616 INTERCHANGEABLE
Bushing Shaft,pump
Hartford Compressors Inc
2910-00-287-85955254102 INTERCHANGEABLE
Nozzle,fuel Injection
Prestolite Electric Limited
2530-00-480-7456Y5DF267 INTERCHANGEABLE
Shaft Assembly Stee
Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems
6532-01-350-182452018 INTERCHANGEABLE
Diaper,infant's
Kimberly-Clark Corporation Dba Cds Kimberly Clark
3455-01-359-090852121 INTERCHANGEABLE
Cutter,milling,end
Niagara Cutter Inc
5985-01-448-41061611AS427-1 INTERCHANGEABLE
Antenna
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
8145-01-465-372956121-000 INTERCHANGEABLE
Storage Container,flexible
Aar Manufacturing, Inc. Dba Aar Mobility Systems
1095-01-536-74475212-1 INTERCHANGEABLE
Case,carbine
Michaels of Oregon Co Dba Uncle Mikes
5120-01-581-3289 INTERCHANGEABLE
Wrench,box and Open End,combinat
7045-01-674-094952121 INTERCHANGEABLE
Applicator,disposable Electronic
Itw Chemtronics
Cross-Reference Index
Part NumberManufacturer
52121 PRIMARY Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
5340L20-005 PRIMARY Us Army Aviation and Missile Command (USA)
Related Parts
4320-00-115-2459INTERCHANGEABLE
BUSHING SHAFT,PUMP
B2-2616
2910-00-287-8595INTERCHANGEABLE
NOZZLE,FUEL INJECTION
5254102
2530-00-480-7456INTERCHANGEABLE
SHAFT ASSEMBLY STEE
Y5DF267
6532-01-350-1824INTERCHANGEABLE
DIAPER,INFANT'S
52018
3455-01-359-0908INTERCHANGEABLE
CUTTER,MILLING,END
52121
5985-01-448-4106INTERCHANGEABLE
ANTENNA
1611AS427-1
8145-01-465-3729INTERCHANGEABLE
STORAGE CONTAINER,FLEXIBLE
56121-000
1095-01-536-7447INTERCHANGEABLE
CASE,CARBINE
5212-1
5120-01-581-3289INTERCHANGEABLE
WRENCH,BOX AND OPEN END,COMBINAT
7045-01-674-0949INTERCHANGEABLE
APPLICATOR,DISPOSABLE ELECTRONIC
52121
6640-01-689-8174INTERCHANGEABLE
PAPER,FILTER
52121

Frequently Asked Questions

What is NSN 5325-00-227-1989?

NSN 5325-00-227-1989 is a Ring,retaining, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5325 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5325-00-227-1989?

NSN 5325-00-227-1989 has 2 cross-referenced part numbers: 52121 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 5340L20-005 (Us Army Aviation and Missile Command).

What NSN replaces 5325-00-227-1989?

There are 11 known substitutes for 5325-00-227-1989: 4320-00-115-2459, 2910-00-287-8595, 2530-00-480-7456 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 52121?

Key specifications for 52121: Material: STEEL; Material Document and Classification: AMS 5112 ASSN STD SINGLE MATERIAL RESPONSE; Material Diameter: 0.059 INCHES NOMINAL IN; Casehardening Indicator: NOT CASEHARDENED. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5325-00-227-1989 still in active supply?

NSN 5325-00-227-1989 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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