PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

306482Washer,flat

Brp Us Inc · NSN 5310-00-121-8408 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-121-8408 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-121-8408. Primary manufacturer part number: 306482.
Features
  • Washer,flat — FSC 5310
  • Material: STEEL OVERALL
  • Center Hole Shape Style: ROUND
  • Overall Diameter: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
  • Hole Diameter: 0.261 INCHES MINIMUM AND 0.273 INCHES MAXIMUM IN
  • Surface Treatment: CADMIUM OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Peripheral Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-121-8408, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Brp Us Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-121-8408
Primary Part Number306482
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerBrp Us Inc
StatusACTIVE
MaterialSTEEL OVERALL
Center Hole Shape StyleROUND
Overall Diameter0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Hole Diameter0.261 INCHES MINIMUM AND 0.273 INCHES MAXIMUM IN
Surface TreatmentCADMIUM OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
Thickness0.052 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-141-1795NAS1149F0463P INTERCHANGEABLE
Washer,flat
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
0306482 Simpson-Lawrence Ltd Johnson and Evi Rude Outboard Motors (GBR)
306482 Simpson-Lawrence Ltd Johnson and Evi Rude Outboard Motors (GBR)
306482 Outboard Marine Corp Johnson Motors Div (USA)
306482 PRIMARY Brp Us Inc (USA)
Related Parts
5310-00-141-1795INTERCHANGEABLE
WASHER,FLAT
NAS1149F0463P

Frequently Asked Questions

What is NSN 5310-00-121-8408?

NSN 5310-00-121-8408 is a Washer,flat, manufactured by Brp Us Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-121-8408?

NSN 5310-00-121-8408 has 4 cross-referenced part numbers: 0306482 (Simpson-Lawrence Ltd Johnson and Evi Rude Outboard Motors), 306482 (Simpson-Lawrence Ltd Johnson and Evi Rude Outboard Motors), 306482 (Outboard Marine Corp Johnson Motors Div), 306482 (Brp Us Inc).

What NSN replaces 5310-00-121-8408?

There is 1 known substitute for 5310-00-121-8408: 5310-00-141-1795. Verify interchangeability with system specifications before substitution.

What are the specifications of 306482?

Key specifications for 306482: Material: STEEL OVERALL; Center Hole Shape Style: ROUND; Overall Diameter: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Hole Diameter: 0.261 INCHES MINIMUM AND 0.273 INCHES MAXIMUM IN. 8 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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