PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51872Washer,flat

Standard-Thomson Corporation · NSN 5310-00-262-4564 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-262-4564 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-262-4564. Primary manufacturer part number: 51872.
Features
  • Washer,flat — FSC 5310
  • Cross-Sectional Shape Style: RECTANGULAR
  • Surface Treatment: CADMIUM OVERALL
  • Material: STEEL OVERALL
  • Overall Diameter: 0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
  • Center Hole Shape Style: ROUND
  • Thickness: 0.040 INCHES NOMINAL IN
  • 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 5310-00-262-4564, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Standard-Thomson Corporation. 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-262-4564
Primary Part Number51872
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerStandard-Thomson Corporation
StatusACTIVE
Cross-Sectional Shape StyleRECTANGULAR
Surface TreatmentCADMIUM OVERALL
MaterialSTEEL OVERALL
Overall Diameter0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Thickness0.040 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Hole Diameter0.170 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5310-00-275-277851872 INTERCHANGEABLE
Washer,flat
The Walworth Company
5975-00-411-168951872 INTERCHANGEABLE
Base,chassis
L3harris Technologies, Inc Div Space & Airborne Systems
4730-00-541-4773SPEC6-4-56 INTERCHANGEABLE
Coupling Half,quick Disconnect
Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupler Division
5930-00-615-405651872 INTERCHANGEABLE
Switch,modified
Landoll Company, Llc
2940-00-882-591351872 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
5365-01-436-3388 INTERCHANGEABLE
Spacer,sleeve
Cross-Reference Index
Part NumberManufacturer
51872 PRIMARY Standard-Thomson Corporation (USA)
Related Parts
5310-00-275-2778INTERCHANGEABLE
WASHER,FLAT
51872
5975-00-411-1689INTERCHANGEABLE
BASE,CHASSIS
51872
4730-00-541-4773INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
SPEC6-4-56
5930-00-615-4056INTERCHANGEABLE
SWITCH,MODIFIED
51872
2940-00-882-5913INTERCHANGEABLE
FILTER ELEMENT,FLUID
51872
5365-01-436-3388INTERCHANGEABLE
SPACER,SLEEVE

Frequently Asked Questions

What is NSN 5310-00-262-4564?

NSN 5310-00-262-4564 is a Washer,flat, manufactured by Standard-Thomson Corporation, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-262-4564?

NSN 5310-00-262-4564 has 1 cross-referenced part number: 51872 (Standard-Thomson Corporation).

What NSN replaces 5310-00-262-4564?

There are 6 known substitutes for 5310-00-262-4564: 5310-00-275-2778, 5975-00-411-1689, 4730-00-541-4773 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51872?

Key specifications for 51872: Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: CADMIUM OVERALL; Material: STEEL OVERALL; Overall Diameter: 0.310 INCHES MINIMUM AND 0.320 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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