PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9300-203Washer,shouldered

L3 Aviation Products, Inc. Dba L3 Technologies · NSN 5310-01-198-4678 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-198-4678 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-198-4678. Primary manufacturer part number: 9300-203.
Features
  • Washer,shouldered — FSC 5310
  • Style Designator: SHOULDERED
  • Material: STEEL COMP 303 OVERALL
  • Surface Treatment: PASSIVATE OVERALL
  • Shoulder Diameter: 0.215 INCHES NOMINAL IN
  • Outside Diameter: 0.310 INCHES NOMINAL IN
  • Material Thickness: 0.016 INCHES NOMINAL IN
  • Shoulder Height: 0.015 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Washer,shouldered, cataloged under National Stock Number 5310-01-198-4678, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is L3 Aviation Products, Inc. Dba L3 Technologies. 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-198-4678
Primary Part Number9300-203
Item NameWasher,shouldered
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerL3 Aviation Products, Inc. Dba L3 Technologies
StatusACTIVE
Style DesignatorSHOULDERED
MaterialSTEEL COMP 303 OVERALL
Surface TreatmentPASSIVATE OVERALL
Shoulder Diameter0.215 INCHES NOMINAL IN
Outside Diameter0.310 INCHES NOMINAL IN
Material Thickness0.016 INCHES NOMINAL IN
Shoulder Height0.015 INCHES NOMINAL IN
Hole Diameter0.188 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5915-00-007-7136930020-3 INTERCHANGEABLE
Filter,band Pass
Raytheon Company Dba Raytheon
5905-00-752-3847SMC344834 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
2040-01-708-8170E9300203-GV-PRIMARY INTERCHANGEABLE
Cover,boat
Wing Inflatables Inc
Cross-Reference Index
Part NumberManufacturer
9300-203 PRIMARY L3 Aviation Products, Inc. Dba L3 Technologies (USA)
Related Parts
5915-00-007-7136INTERCHANGEABLE
FILTER,BAND PASS
930020-3
5905-00-752-3847INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
SMC344834
2040-01-708-8170INTERCHANGEABLE
COVER,BOAT
E9300203-GV-PRIMARY

Frequently Asked Questions

What is NSN 5310-01-198-4678?

NSN 5310-01-198-4678 is a Washer,shouldered, manufactured by L3 Aviation Products, Inc. Dba L3 Technologies, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-198-4678?

NSN 5310-01-198-4678 has 1 cross-referenced part number: 9300-203 (L3 Aviation Products, Inc. Dba L3 Technologies).

What NSN replaces 5310-01-198-4678?

There are 3 known substitutes for 5310-01-198-4678: 5915-00-007-7136, 5905-00-752-3847, 2040-01-708-8170. Verify interchangeability with system specifications before substitution.

What are the specifications of 9300-203?

Key specifications for 9300-203: Style Designator: SHOULDERED; Material: STEEL COMP 303 OVERALL; Surface Treatment: PASSIVATE OVERALL; Shoulder Diameter: 0.215 INCHES NOMINAL 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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