PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet
MRO / Hardware and Abrasives / 5310-01-556-4663

33619Washer,flat

Fastenal Company Dba Fastenal Co · NSN 5310-01-556-4663 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-556-4663 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-556-4663. Primary manufacturer part number: 33619.
NUT + WASHER
5310-01-556-4663 — No Item Name Available illustration
Features
  • Washer,flat — FSC 5310
  • 5 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,flat, cataloged under National Stock Number 5310-01-556-4663, 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 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameWasher,flat
FSC / FSG5310 — No Item Name Available (FSG 53)
ManufacturersNavistar Intl Corp Truck Br Ohio Plant (CAGE 89346); Fastenal Company Dba Fastenal Co (CAGE 0Y3H3); Nd Defense Llc (CAGE 338X5)
Technical Specifications
ParameterValue
NSN5310-01-556-4663
Primary Part Number33619
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenal Co
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
⇄ Verified Substitutes 6
5998-00-985-1071 INTERCHANGEABLE
Circuit Card Assembly
5365-01-213-468725533R1 INTERCHANGEABLE
Spacer,ring
Dressta North America Ltd
5310-01-346-943123043R1 INTERCHANGEABLE
Washer,flat
Anixter
5310-01-512-9907 INTERCHANGEABLE
Washer,flat
5310-01-556-466633227 INTERCHANGEABLE
Washer,flat
Fastenal Company Dba Fastenal Co
5310-01-564-828323446R1 INTERCHANGEABLE
Washer,flat
Nd Defense Llc
Cross-Reference Index
Part NumberManufacturer
21739R1 Navistar Intl Corp Truck Br Ohio Plant (USA)
33619 PRIMARY Fastenal Company Dba Fastenal Co (USA)
12759-00481 Fastenal Company Dba Fastenal Co (USA)
ESP-F-15.321-NPP Nd Defense Llc (USA)
21739R1 Nd Defense Llc (USA)
Related Parts
5998-00-985-1071INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5365-01-213-4687INTERCHANGEABLE
SPACER,RING
25533R1
5310-01-346-9431INTERCHANGEABLE
WASHER,FLAT
23043R1
5310-01-512-9907INTERCHANGEABLE
WASHER,FLAT
5310-01-556-4666INTERCHANGEABLE
WASHER,FLAT
33227
5310-01-564-8283INTERCHANGEABLE
WASHER,FLAT
23446R1

Frequently Asked Questions

What is NSN 5310-01-556-4663?

NSN 5310-01-556-4663 is a Washer,flat, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-01-556-4663?

NSN 5310-01-556-4663 has 5 cross-referenced part numbers: 21739R1 (Navistar Intl Corp Truck Br Ohio Plant), 33619 (Fastenal Company Dba Fastenal Co), 12759-00481 (Fastenal Company Dba Fastenal Co), ESP-F-15.321-NPP (Nd Defense Llc), 21739R1 (Nd Defense Llc).

What NSN replaces 5310-01-556-4663?

There are 6 known substitutes for 5310-01-556-4663: 5998-00-985-1071, 5365-01-213-4687, 5310-01-346-9431 and 3 more. Verify interchangeability with system specifications before substitution.

Is NSN 5310-01-556-4663 still in active supply?

NSN 5310-01-556-4663 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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