PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S123Ring,retaining

Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp · NSN 5325-00-598-2337 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-598-2337 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-598-2337. Primary manufacturer part number: S123.
Features
  • Ring,retaining — FSC 5325
  • Surface Treatment: OXIDE
  • Material: STEEL
  • Material Document and Classification: MIL-W-6101 MIL SPEC SINGLE MATERIAL RESPONSE
  • Casehardening Indicator: NOT CASEHARDENED
  • Cross-Sectional Shape Style: ROUND
  • Usage Design: INTERNAL
  • Outside Diameter: 1.126 INCHES NOMINAL IN
Applications
  • Applications requiring Steel construction
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-598-2337, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5325-00-598-2337
Primary Part NumberS123
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerSikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
StatusACTIVE
Surface TreatmentOXIDE
MaterialSTEEL
Material Document and ClassificationMIL-W-6101 MIL SPEC SINGLE MATERIAL RESPONSE
Casehardening IndicatorNOT CASEHARDENED
Cross-Sectional Shape StyleROUND
Usage DesignINTERNAL
Outside Diameter1.126 INCHES NOMINAL IN
Ring StyleHOOKED
Material Diameter0.063 INCHES NOMINAL IN
Inside Diameter1.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5130-00-119-4281S12-3 INTERCHANGEABLE
Cylinder
Ingersoll Rand Co Athens Plant
6240-00-155-7888549629PC12 INTERCHANGEABLE
Lamp,incandescent
Naval Ship Systems Command
6760-00-232-2731 INTERCHANGEABLE
Lens,projection
5360-00-292-4214 INTERCHANGEABLE
Spring,helical,compression
5330-00-346-3594S12604-119 INTERCHANGEABLE
Retainer,packing
Trelleborg Sealing Solutions Us, Inc.
5365-00-657-4441S123 INTERCHANGEABLE
Spacer,ring
Dana Corp Spicer Transmission Div
9540-00-727-5788 INTERCHANGEABLE
Angle,structural
5905-00-858-365516-340001 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Psi-Peripheral Support
5365-01-461-3304S123 INTERCHANGEABLE
Shim
Deval Life Cycle Support Llc
Cross-Reference Index
Part NumberManufacturer
S123 Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA)
S12-35-6028 Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA)
Related Parts
5130-00-119-4281INTERCHANGEABLE
CYLINDER
S12-3
6240-00-155-7888INTERCHANGEABLE
LAMP,INCANDESCENT
549629PC12
6760-00-232-2731INTERCHANGEABLE
LENS,PROJECTION
5360-00-292-4214INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5330-00-346-3594INTERCHANGEABLE
RETAINER,PACKING
S12604-119
5365-00-657-4441INTERCHANGEABLE
SPACER,RING
S123
9540-00-727-5788INTERCHANGEABLE
ANGLE,STRUCTURAL
5905-00-858-3655INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
16-340001
5365-01-461-3304INTERCHANGEABLE
SHIM
S123

Frequently Asked Questions

What is NSN 5325-00-598-2337?

NSN 5325-00-598-2337 is a Ring,retaining, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-00-598-2337?

NSN 5325-00-598-2337 has 2 cross-referenced part numbers: S123 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), S12-35-6028 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).

What NSN replaces 5325-00-598-2337?

There are 9 known substitutes for 5325-00-598-2337: 5130-00-119-4281, 6240-00-155-7888, 6760-00-232-2731 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S123?

Key specifications for S123: Surface Treatment: OXIDE; Material: STEEL; Material Document and Classification: MIL-W-6101 MIL SPEC SINGLE MATERIAL RESPONSE; Casehardening Indicator: NOT CASEHARDENED. 10 total characteristics are documented in the Federal Logistics Information System.

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