PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

72109Washer,shouldered

L3harris Technologies, Inc Div Space & Airborne Systems · NSN 5310-01-051-4366 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-051-4366 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-051-4366. Primary manufacturer part number: 72109.
Features
  • Washer,shouldered — FSC 5310
  • Shoulder Diameter: 4.187 INCHES NOMINAL IN
  • Material Thickness: 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: GPS10-030 T21A,FSCM 24930 MFR REF SINGLE TREATMENT RESPONSE OVERALL
  • Material Document and Classification: QQ-S-763,CLASS 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Surface Finish: 100.0 MICROINCHES ALL SURFACES
  • Material: STEEL COMP 302 OVERALL
  • Style Designator: SHOULDERED
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 Overall construction
General Description

The Washer,shouldered, cataloged under National Stock Number 5310-01-051-4366, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 11 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
NSN5310-01-051-4366
Primary Part Number72109
Item NameWasher,shouldered
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerL3harris Technologies, Inc Div Space & Airborne Systems
StatusACTIVE
Shoulder Diameter4.187 INCHES NOMINAL IN
Material Thickness0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationGPS10-030 T21A,FSCM 24930 MFR REF SINGLE TREATMENT RESPONSE OVERALL
Material Document and ClassificationQQ-S-763,CLASS 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface Finish100.0 MICROINCHES ALL SURFACES
MaterialSTEEL COMP 302 OVERALL
Style DesignatorSHOULDERED
Surface TreatmentPASSIVATE OVERALL
Shoulder Height0.065 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
Hole Diameter3.630 INCHES MINIMUM AND 3.640 INCHES MAXIMUM IN
Outside Diameter5.740 INCHES MINIMUM AND 5.750 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5305-00-450-59371968396 INTERCHANGEABLE
Screw,machine
General Motors Llc Dba General Motors Llc
5330-01-015-8749 INTERCHANGEABLE
Packing,preformed
5330-01-410-710372109 INTERCHANGEABLE
Packing,preformed
Paccar Winch Inc Dba Paccar Winch Division
Cross-Reference Index
Part NumberManufacturer
72109 PRIMARY L3harris Technologies, Inc Div Space & Airborne Systems (USA)
Related Parts
5305-00-450-5937INTERCHANGEABLE
SCREW,MACHINE
1968396
5330-01-015-8749INTERCHANGEABLE
PACKING,PREFORMED
5330-01-410-7103INTERCHANGEABLE
PACKING,PREFORMED
72109

Frequently Asked Questions

What is NSN 5310-01-051-4366?

NSN 5310-01-051-4366 is a Washer,shouldered, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-051-4366?

NSN 5310-01-051-4366 has 1 cross-referenced part number: 72109 (L3harris Technologies, Inc Div Space & Airborne Systems).

What NSN replaces 5310-01-051-4366?

There are 3 known substitutes for 5310-01-051-4366: 5305-00-450-5937, 5330-01-015-8749, 5330-01-410-7103. Verify interchangeability with system specifications before substitution.

What are the specifications of 72109?

Key specifications for 72109: Shoulder Diameter: 4.187 INCHES NOMINAL IN; Material Thickness: 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN; Surface Treatment Document and Classification: GPS10-030 T21A,FSCM 24930 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: QQ-S-763,CLASS 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 11 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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