PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8M0204648Washer,flat

Brunswick Corp Dba Mercury Marine Div Mercury Marine · NSN 5310-01-661-9471 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-661-9471 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-661-9471. Primary manufacturer part number: 8M0204648.
Features
  • Washer,flat — FSC 5310
  • Material: STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 8617H OVERALL
  • Overall Diameter: 1.50 INCHES NOMINAL IN
  • Hole Diameter: 0.516 INCHES NOMINAL IN
  • 2 verified cross-references
  • Primary manufacturer: Brunswick Corp Dba Mercury Marine Div Mercury Marine
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 or Steel Comp 304 or Steel Comp 8617h Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-661-9471, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Brunswick Corp Dba Mercury Marine Div Mercury Marine. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-661-9471
Primary Part Number8M0204648
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerBrunswick Corp Dba Mercury Marine Div Mercury Marine
StatusACTIVE
MaterialSTEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 8617H OVERALL
Overall Diameter1.50 INCHES NOMINAL IN
Hole Diameter0.516 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5310-00-111-0368 INTERCHANGEABLE
Washer,flat
5360-00-310-066828421 INTERCHANGEABLE
Spring,helical,compression
Eaton Aerospace, Llc Dba Jackson South
4510-00-431-99762842-1 INTERCHANGEABLE
Filter Assembly
Mag Aerospace Industries, Llc Div Safran Cabins
5331-00-582-2133011-7377 INTERCHANGEABLE
O-Ring
Parker Hannifin Corporation Div O-Ring Division
5340-01-201-318628421 INTERCHANGEABLE
Plug,vent
Tyco Fire Products Lp
5330-01-207-7603N2842194 INTERCHANGEABLE
Packing,preformed
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
28421 Brunswick Corp Dba Mercury Marine Div Mercury Marine (USA)
8M0204648 PRIMARY Brunswick Corp Dba Mercury Marine Div Mercury Marine (USA)
Related Parts
5310-00-111-0368INTERCHANGEABLE
WASHER,FLAT
5360-00-310-0668INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
28421
4510-00-431-9976INTERCHANGEABLE
FILTER ASSEMBLY
2842-1
5331-00-582-2133INTERCHANGEABLE
O-RING
011-7377
5340-01-201-3186INTERCHANGEABLE
PLUG,VENT
28421
5330-01-207-7603INTERCHANGEABLE
PACKING,PREFORMED
N2842194

Frequently Asked Questions

What is NSN 5310-01-661-9471?

NSN 5310-01-661-9471 is a Washer,flat, manufactured by Brunswick Corp Dba Mercury Marine Div Mercury Marine, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-661-9471?

NSN 5310-01-661-9471 has 2 cross-referenced part numbers: 28421 (Brunswick Corp Dba Mercury Marine Div Mercury Marine), 8M0204648 (Brunswick Corp Dba Mercury Marine Div Mercury Marine).

What NSN replaces 5310-01-661-9471?

There are 6 known substitutes for 5310-01-661-9471: 5310-00-111-0368, 5360-00-310-0668, 4510-00-431-9976 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8M0204648?

Key specifications for 8M0204648: Material: STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 8617H OVERALL; Part Name Assigned by Controlling Agency: WASHER, INNER; End Item Identification: VERADO 350 OUTBOARD; Overall Diameter: 1.50 INCHES NOMINAL IN. 5 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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