PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

378018Washer,flat

Parker Hannifin Corporation Div Chelsea Products Division · NSN 5310-00-146-2598 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-146-2598 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-146-2598. Primary manufacturer part number: 378018.
Features
  • Washer,flat — FSC 5310
  • Thickness: 0.047 INCHES NOMINAL IN
  • Material Document and Classification: ASTM B152 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Material: COPPER OVERALL
  • Hole Diameter: 0.391 INCHES NOMINAL IN
  • Overall Diameter: 0.562 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
  • Center Hole Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-146-2598, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Parker Hannifin Corporation Div Chelsea Products Division. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-146-2598
Primary Part Number378018
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Chelsea Products Division
StatusCANCELLED
Thickness0.047 INCHES NOMINAL IN
Material Document and ClassificationASTM B152 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MaterialCOPPER OVERALL
Hole Diameter0.391 INCHES NOMINAL IN
Overall Diameter0.562 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5133-01-399-0703 INTERCHANGEABLE
Drill,twist
5133-01-399-0716 INTERCHANGEABLE
Drill,twist
Cross-Reference Index
Part NumberManufacturer
378018 PRIMARY Parker Hannifin Corporation Div Chelsea Products Division (USA)
Related Parts
5133-01-399-0703INTERCHANGEABLE
DRILL,TWIST
5133-01-399-0716INTERCHANGEABLE
DRILL,TWIST

Frequently Asked Questions

What is NSN 5310-00-146-2598?

NSN 5310-00-146-2598 is a Washer,flat, manufactured by Parker Hannifin Corporation Div Chelsea Products Division, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-146-2598?

NSN 5310-00-146-2598 has 1 cross-referenced part number: 378018 (Parker Hannifin Corporation Div Chelsea Products Division).

What NSN replaces 5310-00-146-2598?

There are 2 known substitutes for 5310-00-146-2598: 5133-01-399-0703, 5133-01-399-0716. Verify interchangeability with system specifications before substitution.

What are the specifications of 378018?

Key specifications for 378018: Thickness: 0.047 INCHES NOMINAL IN; Material Document and Classification: ASTM B152 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: COPPER OVERALL; Hole Diameter: 0.391 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-146-2598 still in active supply?

NSN 5310-00-146-2598 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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