PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40253Washer,lock

Fastenal Company Dba Fastenal Co · NSN 5310-01-556-6817 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-556-6817 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-556-6817. Primary manufacturer part number: 40253.
Features
  • Washer,lock — FSC 5310
  • 4 verified cross-references
  • Primary manufacturer: Fastenal Company Dba Fastenal Co
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-556-6817, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fastenal Company Dba Fastenal Co. This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameWasher,lock
FSC / FSG5310 — No Item Name Available (FSG 53)
ManufacturersNavistar Intl Corp Truck Br Ohio Plant (CAGE 89346); Nd Defense Llc (CAGE 338X5); Fastenal Company Dba Fastenal Co (CAGE 0Y3H3)
Technical Specifications
ParameterValue
NSN5310-01-556-6817
Primary Part Number40253
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenal Co
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5996-00-043-0247 INTERCHANGEABLE
Amplifier,electronic Control
5905-00-043-4754 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
3110-00-100-059853375 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
5950-00-470-937542809 INTERCHANGEABLE
Reactor
Freed Transformer Co
2990-00-845-143740253 INTERCHANGEABLE
Pipe,exhaust
Walker Mfg Co
2910-00-997-9815 INTERCHANGEABLE
Pump,fuel,cam Actuated
5835-01-096-364740253 INTERCHANGEABLE
Kit
Crown Audio, Inc. Dba Crown International
5945-01-343-004640253 INTERCHANGEABLE
Relay,electromagnetic
Gentherm Medical, Llc
5310-01-513-464830264R1 INTERCHANGEABLE
Washer,lock
Nd Defense Llc
5310-01-556-681540258 INTERCHANGEABLE
Washer,lock
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
933965R1 Navistar Intl Corp Truck Br Ohio Plant (USA)
933965R1 Nd Defense Llc (USA)
40253 PRIMARY Fastenal Company Dba Fastenal Co (USA)
ESP-FM-1.121-PP Nd Defense Llc (USA)
Related Parts
5996-00-043-0247INTERCHANGEABLE
AMPLIFIER,ELECTRONIC CONTROL
5905-00-043-4754INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
3110-00-100-0598INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
53375
5950-00-470-9375INTERCHANGEABLE
REACTOR
42809
2990-00-845-1437INTERCHANGEABLE
PIPE,EXHAUST
40253
2910-00-997-9815INTERCHANGEABLE
PUMP,FUEL,CAM ACTUATED
5835-01-096-3647INTERCHANGEABLE
KIT
40253
5945-01-343-0046INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
40253
5310-01-513-4648INTERCHANGEABLE
WASHER,LOCK
30264R1
5310-01-556-6815INTERCHANGEABLE
WASHER,LOCK
40258
5310-01-556-6816INTERCHANGEABLE
WASHER,LOCK
5310-01-556-6818INTERCHANGEABLE
WASHER,LOCK

Frequently Asked Questions

What is NSN 5310-01-556-6817?

NSN 5310-01-556-6817 is a Washer,lock, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-01-556-6817?

NSN 5310-01-556-6817 has 4 cross-referenced part numbers: 933965R1 (Navistar Intl Corp Truck Br Ohio Plant), 933965R1 (Nd Defense Llc), 40253 (Fastenal Company Dba Fastenal Co), ESP-FM-1.121-PP (Nd Defense Llc).

What NSN replaces 5310-01-556-6817?

There are 12 known substitutes for 5310-01-556-6817: 5996-00-043-0247, 5905-00-043-4754, 3110-00-100-0598 and 9 more. Verify interchangeability with system specifications before substitution.

Is NSN 5310-01-556-6817 still in active supply?

NSN 5310-01-556-6817 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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