PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9A7018Washer,split

Napco International Llc Dba Napco International Inc · NSN 5310-00-528-3723 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-528-3723 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-528-3723. Primary manufacturer part number: 9A7018.
Features
  • Washer,split — FSC 5310
  • Material: STEEL OVERALL
  • Style Designator: SPLIT
  • Material Thickness: 0.031 INCHES NOMINAL IN
  • Outside Diameter: 1.688 INCHES NOMINAL IN
  • Hole Diameter: 1.312 INCHES NOMINAL IN
  • Distance Across Split Opening: 0.062 INCHES NOMINAL IN
  • 17 verified cross-references
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,split, cataloged under National Stock Number 5310-00-528-3723, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Napco International Llc Dba Napco International Inc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 17 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-528-3723
Primary Part Number9A7018
Item NameWasher,split
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNapco International Llc Dba Napco International Inc
StatusCANCELLED
MaterialSTEEL OVERALL
Style DesignatorSPLIT
Material Thickness0.031 INCHES NOMINAL IN
Outside Diameter1.688 INCHES NOMINAL IN
Hole Diameter1.312 INCHES NOMINAL IN
Distance Across Split Opening0.062 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
5306-00-006-8311 INTERCHANGEABLE
Bolt,machine
3431-00-018-8274105Z45 INTERCHANGEABLE
Nozzle,welding
Cni Ceramic Nozzles Inc Dba Cni
5325-00-200-558417187 INTERCHANGEABLE
Ring,retaining
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5950-00-417-4501989110-5B INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
4730-00-448-699085588 INTERCHANGEABLE
Coupling,pipe
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5136-00-528-2297 INTERCHANGEABLE
Tap,thread Cutting
1040-00-991-563653A68B279 INTERCHANGEABLE
Fork,container
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6150-01-200-6524 INTERCHANGEABLE
Cable Assembly,power,electrical,
3040-01-231-707017187-1 INTERCHANGEABLE
Shaft,shouldered
Wesco Machine Inc
5340-01-328-920617187 INTERCHANGEABLE
Closer,door
Alter Harry Co the Div of T E C
Cross-Reference Index
Part NumberManufacturer
5310005283723 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
9A7018 PRIMARY Napco International Llc Dba Napco International Inc (USA)
5283723 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
279335 General Motors Corp (USA)
V3402X White Motor Corp (USA)
1046P2 Diamond Reo Truck Co (USA)
9A7909 PRIMARY Napco International Llc Dba Napco International Inc (USA)
3-1-2-15-53 Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products (USA)
3 1-2 15-53 Dana Corp Spicer Transmission Div (USA)
17187 Diamond Reo Truck Co (USA)
279335 General Motors Llc Dba General Motors Llc (USA)
9CLS15 PRIMARY Mack Trucks Inc Parts Opn (USA)
3DC0219 Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.) (USA)
669642 Sasco Inc Canadian Div
31-2-15-53 PRIMARY Dana Corp Spicer Transmission Div (USA)
3-1-2-15-33 Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products (USA)
85588 Clark Equipment Co (USA)
Related Parts
5306-00-006-8311INTERCHANGEABLE
BOLT,MACHINE
3431-00-018-8274INTERCHANGEABLE
NOZZLE,WELDING
105Z45
5325-00-200-5584INTERCHANGEABLE
RING,RETAINING
17187
5950-00-417-4501INTERCHANGEABLE
COIL,RADIO FREQUENCY
989110-5B
4730-00-448-6990INTERCHANGEABLE
COUPLING,PIPE
85588
5136-00-528-2297INTERCHANGEABLE
TAP,THREAD CUTTING
1040-00-991-5636INTERCHANGEABLE
FORK,CONTAINER
53A68B279
6150-01-200-6524INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL,
3040-01-231-7070INTERCHANGEABLE
SHAFT,SHOULDERED
17187-1
5340-01-328-9206INTERCHANGEABLE
CLOSER,DOOR
17187

Frequently Asked Questions

What is NSN 5310-00-528-3723?

NSN 5310-00-528-3723 is a Washer,split, manufactured by Napco International Llc Dba Napco International Inc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-528-3723?

NSN 5310-00-528-3723 has 17 cross-referenced part numbers: 5310005283723 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales), 9A7018 (Napco International Llc Dba Napco International Inc), 5283723 (U S Army Tank Automotive Command Amsta-Im-Mm), 279335 (General Motors Corp), V3402X (White Motor Corp) and 12 more.

What NSN replaces 5310-00-528-3723?

There are 10 known substitutes for 5310-00-528-3723: 5306-00-006-8311, 3431-00-018-8274, 5325-00-200-5584 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9A7018?

Key specifications for 9A7018: Material: STEEL OVERALL; Style Designator: SPLIT; Material Thickness: 0.031 INCHES NOMINAL IN; Outside Diameter: 1.688 INCHES NOMINAL IN. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-528-3723 still in active supply?

NSN 5310-00-528-3723 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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