PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

123-99Ring,retaining

Avionics Specialties, Inc. · NSN 5325-00-068-9997 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-068-9997 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-068-9997. Primary manufacturer part number: 123-99.
Features
  • Ring,retaining — FSC 5325
  • Ring Style: STRAIGHT GAP
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material: ALUMINUM ALLOY 2024
  • Surface Treatment: ANODIZE
  • Material Document and Classification: AMS 4037 ASSN STD SINGLE MATERIAL RESPONSE
  • Usage Design: INTERNAL
  • Outside Diameter: 3.970 INCHES NOMINAL IN
Applications
  • Applications requiring Aluminum Alloy 2024 construction
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-068-9997, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Avionics Specialties, Inc.. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5325-00-068-9997
Primary Part Number123-99
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerAvionics Specialties, Inc.
StatusACTIVE
Ring StyleSTRAIGHT GAP
Cross-Sectional Shape StyleRECTANGULAR
MaterialALUMINUM ALLOY 2024
Surface TreatmentANODIZE
Material Document and ClassificationAMS 4037 ASSN STD SINGLE MATERIAL RESPONSE
Usage DesignINTERNAL
Outside Diameter3.970 INCHES NOMINAL IN
Inside Diameter3.920 INCHES NOMINAL IN
Casehardening IndicatorNOT CASEHARDENED
Major Thickness0.570 INCHES NOMINAL IN
End StyleVERTEX CENTER OR ABOVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5310-00-001-816513678 INTERCHANGEABLE
Washer,spring Tension
Carroll Appliance Parts
5133-00-228-1413 INTERCHANGEABLE
Drill,twist
6150-00-280-450012399 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Cummins Power Generation Inc.
5950-00-834-892423823 INTERCHANGEABLE
Transformer,power Autotransforme
Grimes Aerospace Company
5330-00-908-729036846427 INTERCHANGEABLE
Gasket
Perkins Engines Inc
6240-00-949-81062140-0037 INTERCHANGEABLE
Lamp,incandescent
Keysight Technologies Inc
5998-01-416-605912399 INTERCHANGEABLE
Pcb,suction Apparat
Allied Healthcare Products, Inc. Dba Allied
Cross-Reference Index
Part NumberManufacturer
123-99 PRIMARY Avionics Specialties, Inc. (USA)
Related Parts
5310-00-001-8165INTERCHANGEABLE
WASHER,SPRING TENSION
13678
5133-00-228-1413INTERCHANGEABLE
DRILL,TWIST
6150-00-280-4500INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
12399
5950-00-834-8924INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
23823
5330-00-908-7290INTERCHANGEABLE
GASKET
36846427
6240-00-949-8106INTERCHANGEABLE
LAMP,INCANDESCENT
2140-0037
5998-01-416-6059INTERCHANGEABLE
PCB,SUCTION APPARAT
12399

Frequently Asked Questions

What is NSN 5325-00-068-9997?

NSN 5325-00-068-9997 is a Ring,retaining, manufactured by Avionics Specialties, Inc., classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-00-068-9997?

NSN 5325-00-068-9997 has 1 cross-referenced part number: 123-99 (Avionics Specialties, Inc.).

What NSN replaces 5325-00-068-9997?

There are 7 known substitutes for 5325-00-068-9997: 5310-00-001-8165, 5133-00-228-1413, 6150-00-280-4500 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 123-99?

Key specifications for 123-99: Ring Style: STRAIGHT GAP; Cross-Sectional Shape Style: RECTANGULAR; Material: ALUMINUM ALLOY 2024; Surface Treatment: ANODIZE. 11 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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