PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SP1021Ring,retaining

United Technologies Corp Electro Systems Inc · NSN 5325-00-598-1222 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-598-1222 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-598-1222. Primary manufacturer part number: SP1021.
Features
  • Ring,retaining — FSC 5325
  • Material Diameter: 0.040 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN
  • Usage Design: EXTERNAL
  • Major Thickness: 0.032 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: ROUND
  • Material: STEEL
  • Outside Diameter: 0.260 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
  • End Style: 90 DEGREE PARALLEL
Applications
  • Applications requiring Steel construction
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-598-1222, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is United Technologies Corp Electro Systems Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5325-00-598-1222
Primary Part NumberSP1021
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerUnited Technologies Corp Electro Systems Inc
StatusCANCELLED
Material Diameter0.040 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN
Usage DesignEXTERNAL
Major Thickness0.032 INCHES NOMINAL IN
Cross-Sectional Shape StyleROUND
MaterialSTEEL
Outside Diameter0.260 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
End Style90 DEGREE PARALLEL
Inside Diameter0.196 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN
Ring StyleSTRAIGHT GAP
Casehardening IndicatorNOT CASEHARDENED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5360-00-461-1701D3117 INTERCHANGEABLE
Spring,helical,compression
Clayton Manufacturing Company
6650-00-498-2416SP102-1 INTERCHANGEABLE
Stage Micrometer,microscope
Domenic Stangherlin Dba Line Tool Company
5340-01-227-6810L3-7 INTERCHANGEABLE
Clamp,synchro
Roller Bearing Co of America, Inc Div Pic Design
4810-01-465-4230D3116 INTERCHANGEABLE
Valve,solenoid
Precision Dynamics Inc
4810-01-465-4231D3117 INTERCHANGEABLE
Valve,solenoid
Precision Dynamics Inc
5930-01-507-7706A76-10355 INTERCHANGEABLE
Switch,rotary
Rix Industries
5930-01-507-7765A76-10356 INTERCHANGEABLE
Switch,push
Rix Industries
5930-01-507-7779A76-9563 INTERCHANGEABLE
Switch,push
Rix Industries
Cross-Reference Index
Part NumberManufacturer
D3116 Essex Industries, Inc. Dba Essex Industries (USA)
SP1021 PRIMARY United Technologies Corp Electro Systems Inc (USA)
SP5254 Ambac International Corporation Div Ambac International (USA)
SP5254 PRIMARY United Technologies Corp Electro Systems Inc (USA)
SP1021 Ambac International Corporation Div Ambac International (USA)
D3117 Essex Industries, Inc. Dba Essex Industries (USA)
Related Parts
5360-00-461-1701INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
D3117
6650-00-498-2416INTERCHANGEABLE
STAGE MICROMETER,MICROSCOPE
SP102-1
5340-01-227-6810INTERCHANGEABLE
CLAMP,SYNCHRO
L3-7
4810-01-465-4230INTERCHANGEABLE
VALVE,SOLENOID
D3116
4810-01-465-4231INTERCHANGEABLE
VALVE,SOLENOID
D3117
5930-01-507-7706INTERCHANGEABLE
SWITCH,ROTARY
A76-10355
5930-01-507-7765INTERCHANGEABLE
SWITCH,PUSH
A76-10356
5930-01-507-7779INTERCHANGEABLE
SWITCH,PUSH
A76-9563

Frequently Asked Questions

What is NSN 5325-00-598-1222?

NSN 5325-00-598-1222 is a Ring,retaining, manufactured by United Technologies Corp Electro Systems Inc, classified under FSC 5325 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5325-00-598-1222?

NSN 5325-00-598-1222 has 6 cross-referenced part numbers: D3116 (Essex Industries, Inc. Dba Essex Industries), SP1021 (United Technologies Corp Electro Systems Inc), SP5254 (Ambac International Corporation Div Ambac International), SP5254 (United Technologies Corp Electro Systems Inc), SP1021 (Ambac International Corporation Div Ambac International) and 1 more.

What NSN replaces 5325-00-598-1222?

There are 8 known substitutes for 5325-00-598-1222: 5360-00-461-1701, 6650-00-498-2416, 5340-01-227-6810 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SP1021?

Key specifications for SP1021: Material Diameter: 0.040 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN; Usage Design: EXTERNAL; Major Thickness: 0.032 INCHES NOMINAL IN; Cross-Sectional Shape Style: ROUND. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5325-00-598-1222 still in active supply?

NSN 5325-00-598-1222 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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