PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

31312Ring,retaining

Eaton Aerospace, Llc Dba Jackson South · NSN 5325-00-369-3628 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-369-3628 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-369-3628. Primary manufacturer part number: 31312.
Features
  • Ring,retaining — FSC 5325
  • Major Thickness: 0.125 INCHES NOMINAL IN
  • Material: STEEL
  • Material Document and Classification: JAN-S-1160 GRADE 1 MIL SPEC SINGLE MATERIAL RESPONSE
  • Inside Diameter: 1.250 INCHES NOMINAL IN
  • Casehardening Indicator: NOT CASEHARDENED
  • Outside Diameter: 1.688 INCHES NOMINAL IN
  • Usage Design: EXTERNAL
Applications
  • Applications requiring Steel construction
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-369-3628, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 22 commercial cross-references from 5 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
NSN5325-00-369-3628
Primary Part Number31312
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerEaton Aerospace, Llc Dba Jackson South
StatusCANCELLED
Major Thickness0.125 INCHES NOMINAL IN
MaterialSTEEL
Material Document and ClassificationJAN-S-1160 GRADE 1 MIL SPEC SINGLE MATERIAL RESPONSE
Inside Diameter1.250 INCHES NOMINAL IN
Casehardening IndicatorNOT CASEHARDENED
Outside Diameter1.688 INCHES NOMINAL IN
Usage DesignEXTERNAL
Cross-Sectional Shape StyleROUNDED CORNERS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
5136-00-197-95667249 INTERCHANGEABLE
Die,rethreading
Stanley Tools Div of Stanley Works
5330-00-513-103431312 INTERCHANGEABLE
Gasket
Honeywell International Inc. Div Aerospace - Torrance
4730-00-554-7833 INTERCHANGEABLE
Adapter,straight,tube to Hose
3110-00-926-1379L44649 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
6550-01-153-3637231312 INTERCHANGEABLE
Sensitivity Discs,diagnostic
Becton, Dickinson and Co Dba Becton Dickinson & Co
4820-01-226-710731312 INTERCHANGEABLE
Seat,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
5305-01-319-8560CB27657-006 INTERCHANGEABLE
Screw,cap,socket Head
Moog Inc. Dba Ampac-Isp Corp
4920-01-343-7624 INTERCHANGEABLE
Reservoir Insert
7045-01-406-46637100086666 INTERCHANGEABLE
Adpe,wrist Rest
3m Company
5110-01-429-654800931312000 INTERCHANGEABLE
File,hand
Sears, Roebuck and Co. Dba Sears Div Sears Commercial
Cross-Reference Index
Part NumberManufacturer
31312 PRIMARY Eaton Aerospace, Llc Dba Jackson South (USA)
3435A4PC11 Bae Systems Land & Armaments L.p. (USA)
387521PC11 Naval Ship Systems Command (USA)
3435A3PC11 Fmc Corp (USA)
E64470PC31312 Eaton Aerospace, Llc Dba Jackson South (USA)
E38933-6PC59 Eaton Aerospace, Llc Dba Jackson South (USA)
E38933-14PC31312 Eaton Aerospace, Llc Dba Jackson South (USA)
387512PC11 Naval Ship Systems Command (USA)
3435A1PC11 Bae Systems Land & Armaments L.p. (USA)
E38933-5PC11 Eaton Aerospace, Llc Dba Jackson South (USA)
3435A3PC11 Amz Alabama Inc. (USA)
387513PC59 Naval Ship Systems Command (USA)
2100-3127769PC65 Naval Ship Systems Command (USA)
2100-1464631PC27 Naval Ship Systems Command (USA)
3435A4PC11 Amz Alabama Inc. (USA)
3435A1PC11 Amz Alabama Inc. (USA)
387511PC11 Naval Ship Systems Command (USA)
387521PC59 Naval Ship Systems Command (USA)
E38933-4PC11 Eaton Aerospace, Llc Dba Jackson South (USA)
3435A1PC11 Fmc Corp (USA)
Related Parts
5136-00-197-9566INTERCHANGEABLE
DIE,RETHREADING
7249
5330-00-513-1034INTERCHANGEABLE
GASKET
31312
4730-00-554-7833INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
3110-00-926-1379INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
L44649
6550-01-153-3637INTERCHANGEABLE
SENSITIVITY DISCS,DIAGNOSTIC
231312
4820-01-226-7107INTERCHANGEABLE
SEAT,VALVE
31312
5305-01-319-8560INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
CB27657-006
4920-01-343-7624INTERCHANGEABLE
RESERVOIR INSERT
7045-01-406-4663INTERCHANGEABLE
ADPE,WRIST REST
7100086666
5110-01-429-6548INTERCHANGEABLE
FILE,HAND
00931312000
5920-01-722-8147INTERCHANGEABLE
FUSEHOLDER,BLOCK
NMM110710-7

Frequently Asked Questions

What is NSN 5325-00-369-3628?

NSN 5325-00-369-3628 is a Ring,retaining, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5325 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5325-00-369-3628?

NSN 5325-00-369-3628 has 22 cross-referenced part numbers: 31312 (Eaton Aerospace, Llc Dba Jackson South), 3435A4PC11 (Bae Systems Land & Armaments L.p.), 387521PC11 (Naval Ship Systems Command), 3435A3PC11 (Fmc Corp), E64470PC31312 (Eaton Aerospace, Llc Dba Jackson South) and 17 more.

What NSN replaces 5325-00-369-3628?

There are 11 known substitutes for 5325-00-369-3628: 5136-00-197-9566, 5330-00-513-1034, 4730-00-554-7833 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 31312?

Key specifications for 31312: Major Thickness: 0.125 INCHES NOMINAL IN; Material: STEEL; Material Document and Classification: JAN-S-1160 GRADE 1 MIL SPEC SINGLE MATERIAL RESPONSE; Inside Diameter: 1.250 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5325-00-369-3628 still in active supply?

NSN 5325-00-369-3628 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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