PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50838Washer,flat

Kleinschmidt Inc · NSN 5310-00-523-2004 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-523-2004 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-523-2004. Primary manufacturer part number: 50838.
Features
  • Washer,flat — FSC 5310
  • Surface Treatment: PHOSPHATE OVERALL
  • Material: STEEL OVERALL
  • Surface Treatment Document and Classification: MIL-F-14072,FINISH E211 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Material Document and Classification: FED STD 66,AISI C1006 THRU C1020 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Hole Diameter: 0.221 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
  • Center Hole 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 5310-00-523-2004, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Kleinschmidt Inc. Government technical data includes 10 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
NSN5310-00-523-2004
Primary Part Number50838
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerKleinschmidt Inc
StatusACTIVE
Surface TreatmentPHOSPHATE OVERALL
MaterialSTEEL OVERALL
Surface Treatment Document and ClassificationMIL-F-14072,FINISH E211 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Material Document and ClassificationFED STD 66,AISI C1006 THRU C1020 FED STD SINGLE MATERIAL RESPONSE OVERALL
Hole Diameter0.221 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.054 INCHES NOMINAL IN
Overall Diameter0.437 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5305-00-685-7660 INTERCHANGEABLE
Screw,assembled Washer
5940-01-486-082950838 INTERCHANGEABLE
Terminal,lug
Te Connectivity Corporation
6640-01-707-408150838 INTERCHANGEABLE
Cylinder,graduated,laboratory
Hach Company Dba Hach Co
Cross-Reference Index
Part NumberManufacturer
50838 Kleinschmidt Inc (USA)
Related Parts
5305-00-685-7660INTERCHANGEABLE
SCREW,ASSEMBLED WASHER
5940-01-486-0829INTERCHANGEABLE
TERMINAL,LUG
50838
6640-01-707-4081INTERCHANGEABLE
CYLINDER,GRADUATED,LABORATORY
50838

Frequently Asked Questions

What is NSN 5310-00-523-2004?

NSN 5310-00-523-2004 is a Washer,flat, manufactured by Kleinschmidt Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-523-2004?

NSN 5310-00-523-2004 has 1 cross-referenced part number: 50838 (Kleinschmidt Inc).

What NSN replaces 5310-00-523-2004?

There are 3 known substitutes for 5310-00-523-2004: 5305-00-685-7660, 5940-01-486-0829, 6640-01-707-4081. Verify interchangeability with system specifications before substitution.

What are the specifications of 50838?

Key specifications for 50838: Surface Treatment: PHOSPHATE OVERALL; Material: STEEL OVERALL; Surface Treatment Document and Classification: MIL-F-14072,FINISH E211 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: FED STD 66,AISI C1006 THRU C1020 FED STD SINGLE MATERIAL RESPONSE OVERALL. 10 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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