PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

300803Washer,flat

Brp Us Inc · NSN 5310-00-121-8324 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-121-8324 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-121-8324. Primary manufacturer part number: 300803.
Features
  • Washer,flat — FSC 5310
  • Peripheral Shape Style: ROUND
  • Thickness: 0.027 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material: COPPER ALLOY OVERALL
  • Hole Diameter: 0.198 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN
  • Overall Diameter: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
  • Center Hole Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-121-8324, 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 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN5310-00-121-8324
Primary Part Number300803
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerBrp Us Inc
StatusACTIVE
Peripheral Shape StyleROUND
Thickness0.027 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
Cross-Sectional Shape StyleRECTANGULAR
MaterialCOPPER ALLOY OVERALL
Hole Diameter0.198 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN
Overall Diameter0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5310-00-264-1950 INTERCHANGEABLE
Washer,flat
4730-01-136-77023008-03 INTERCHANGEABLE
Restrictor,fluid Flow
Pentair Filtration Solutions, Llc
3120-01-228-0654300803 INTERCHANGEABLE
Bearing,sleeve
Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling
5985-01-269-5346300803 INTERCHANGEABLE
Switch,radio Frequency Transmiss
Caes Systems Llc
5977-01-449-9143300803 INTERCHANGEABLE
Slip Ring Sub-Assy
Moog Inc.
7025-01-545-6545300803 INTERCHANGEABLE
Disk Drive Unit
Lacie Ltd
Cross-Reference Index
Part NumberManufacturer
300803 Outboard Marine Corp Johnson Motors Div (USA)
300803 PRIMARY Brp Us Inc (USA)
Related Parts
5310-00-264-1950INTERCHANGEABLE
WASHER,FLAT
4730-01-136-7702INTERCHANGEABLE
RESTRICTOR,FLUID FLOW
3008-03
3120-01-228-0654INTERCHANGEABLE
BEARING,SLEEVE
300803
5985-01-269-5346INTERCHANGEABLE
SWITCH,RADIO FREQUENCY TRANSMISS
300803
5977-01-449-9143INTERCHANGEABLE
SLIP RING SUB-ASSY
300803
7025-01-545-6545INTERCHANGEABLE
DISK DRIVE UNIT
300803

Frequently Asked Questions

What is NSN 5310-00-121-8324?

NSN 5310-00-121-8324 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 5310-00-121-8324?

NSN 5310-00-121-8324 has 2 cross-referenced part numbers: 300803 (Outboard Marine Corp Johnson Motors Div), 300803 (Brp Us Inc).

What NSN replaces 5310-00-121-8324?

There are 6 known substitutes for 5310-00-121-8324: 5310-00-264-1950, 4730-01-136-7702, 3120-01-228-0654 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 300803?

Key specifications for 300803: Peripheral Shape Style: ROUND; Thickness: 0.027 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Material: COPPER ALLOY OVERALL. 7 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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