PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SK251-21Ring,retaining

Clark Material Handling Company · NSN 5325-00-741-1354 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-741-1354 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-741-1354. Primary manufacturer part number: SK251-21.
Features
  • Ring,retaining — FSC 5325
  • Material: STEEL COMP 1065
  • Material Document and Classification: ASTM A576, COMP 1065 ASSN STD SINGLE MATERIAL RESPONSE
  • Outside Diameter: 2.250 INCHES NOMINAL IN
  • Usage Design: EXTERNAL
  • Material Hardness Rating: 43.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM
  • Inside Diameter: 1.875 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
Applications
  • Applications requiring Steel Comp 1065 construction
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-741-1354, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Clark Material Handling Company. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5325-00-741-1354
Primary Part NumberSK251-21
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerClark Material Handling Company
StatusCANCELLED
MaterialSTEEL COMP 1065
Material Document and ClassificationASTM A576, COMP 1065 ASSN STD SINGLE MATERIAL RESPONSE
Outside Diameter2.250 INCHES NOMINAL IN
Usage DesignEXTERNAL
Material Hardness Rating43.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM
Inside Diameter1.875 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Ring StyleSTRAIGHT GAP
End Style90 DEGREE PARALLEL
Major Thickness0.093 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
Casehardening IndicatorNOT CASEHARDENED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5930-00-189-1480266-8397-020 INTERCHANGEABLE
Switch,pressure
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5935-00-194-80825135E INTERCHANGEABLE
Connector,plug,electrical
Lax Electronics, Inc. Dba Automatic Connector Div Automatic Connector
3110-00-554-5966297378 INTERCHANGEABLE
Bearing,ball,annular
Acf Industries Inc
5940-00-681-9573191-10 INTERCHANGEABLE
Terminal Board
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-00-988-1727160717 INTERCHANGEABLE
Screw,machine
General Motors Llc Dba General Motors Llc
4931-01-085-357319110 INTERCHANGEABLE
Preamplifier Assemb
Electro Scientific Industries Inc
5950-01-123-0630984928-1B INTERCHANGEABLE
Transformer,power
Raytheon Company Dba Raytheon
5962-01-186-5315 INTERCHANGEABLE
Microcircuit,memory
6550-01-241-2395R19110 INTERCHANGEABLE
Bacteria Culture Control Discs
Remel Inc.
5315-01-382-453819110 INTERCHANGEABLE
Pin,shoulder,headless
Northwestern Tools, Inc.
Cross-Reference Index
Part NumberManufacturer
1714 Clark Equipment Co (USA)
42357R Diamond Reo Truck Co (USA)
SK251-21 PRIMARY Clark Material Handling Company (USA)
8A7292 PRIMARY Napco International Llc Dba Napco International Inc (USA)
SK251-21 Clark Equipment Co (USA)
639537 Sasco Inc Canadian Div
399346 White Motor Corp (USA)
19110 Diamond Reo Truck Co (USA)
T93-29 Liberty Ventures Inti, Llc (USA)
1714 PRIMARY Clark Material Handling Company (USA)
8A8224 PRIMARY Napco International Llc Dba Napco International Inc (USA)
3BLA01012 PRIMARY Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.) (USA)
2019975 Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 (USA)
7411354 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
2019975 General Motors Llc Dba General Motors Llc (USA)
Related Parts
5930-00-189-1480INTERCHANGEABLE
SWITCH,PRESSURE
266-8397-020
5935-00-194-8082INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5135E
3110-00-554-5966INTERCHANGEABLE
BEARING,BALL,ANNULAR
297378
5940-00-681-9573INTERCHANGEABLE
TERMINAL BOARD
191-10
5305-00-988-1727INTERCHANGEABLE
SCREW,MACHINE
160717
4931-01-085-3573INTERCHANGEABLE
PREAMPLIFIER ASSEMB
19110
5950-01-123-0630INTERCHANGEABLE
TRANSFORMER,POWER
984928-1B
5962-01-186-5315INTERCHANGEABLE
MICROCIRCUIT,MEMORY
6550-01-241-2395INTERCHANGEABLE
BACTERIA CULTURE CONTROL DISCS
R19110
5315-01-382-4538INTERCHANGEABLE
PIN,SHOULDER,HEADLESS
19110
4330-01-552-1864INTERCHANGEABLE
FILTER,FLUID
PT191-10
4620-01-627-8016INTERCHANGEABLE
CELL,SALINITY DETECTOR
19110

Frequently Asked Questions

What is NSN 5325-00-741-1354?

NSN 5325-00-741-1354 is a Ring,retaining, manufactured by Clark Material Handling Company, classified under FSC 5325 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5325-00-741-1354?

NSN 5325-00-741-1354 has 15 cross-referenced part numbers: 1714 (Clark Equipment Co), 42357R (Diamond Reo Truck Co), SK251-21 (Clark Material Handling Company), 8A7292 (Napco International Llc Dba Napco International Inc), SK251-21 (Clark Equipment Co) and 10 more.

What NSN replaces 5325-00-741-1354?

There are 12 known substitutes for 5325-00-741-1354: 5930-00-189-1480, 5935-00-194-8082, 3110-00-554-5966 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SK251-21?

Key specifications for SK251-21: Special Features: 0.005 IN. MAX CORNER RADIUS ON ID AND OD ONE SIDE ONLY IN; Material: STEEL COMP 1065; Material Document and Classification: ASTM A576, COMP 1065 ASSN STD SINGLE MATERIAL RESPONSE; Outside Diameter: 2.250 INCHES NOMINAL IN. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5325-00-741-1354 still in active supply?

NSN 5325-00-741-1354 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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