PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66886Washer,flat

Parker Hannifin Corporation Div Hydraulic Systems Division · NSN 5310-00-404-1434 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-404-1434 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-404-1434. Primary manufacturer part number: 66886.
Features
  • Washer,flat — FSC 5310
  • Surface Treatment: PASSIVATE OVERALL
  • Center Hole Shape Style: ROUND
  • Surface Treatment Document and Classification: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Hole Diameter: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
  • Overall Diameter: 0.343 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
  • Material: STEEL COMP 303 OVERALL
  • Material Document and Classification: ASTM A582 COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-404-1434, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Parker Hannifin Corporation Div Hydraulic Systems Division. 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-404-1434
Primary Part Number66886
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Hydraulic Systems Division
StatusACTIVE
Surface TreatmentPASSIVATE OVERALL
Center Hole Shape StyleROUND
Surface Treatment Document and ClassificationMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Hole Diameter0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Overall Diameter0.343 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
MaterialSTEEL COMP 303 OVERALL
Material Document and ClassificationASTM A582 COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2530-01-025-94885464763 INTERCHANGEABLE
Parts Kit,hydraulic Brake Wheel
General Motors Llc Dba General Motors Llc
4730-01-117-378266886 INTERCHANGEABLE
Trap,steam
Spirax Sarco Inc Dba Spirax Sarco
Cross-Reference Index
Part NumberManufacturer
66886 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
Related Parts
2530-01-025-9488INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE WHEEL
5464763
4730-01-117-3782INTERCHANGEABLE
TRAP,STEAM
66886

Frequently Asked Questions

What is NSN 5310-00-404-1434?

NSN 5310-00-404-1434 is a Washer,flat, manufactured by Parker Hannifin Corporation Div Hydraulic Systems Division, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-404-1434?

NSN 5310-00-404-1434 has 1 cross-referenced part number: 66886 (Parker Hannifin Corporation Div Hydraulic Systems Division).

What NSN replaces 5310-00-404-1434?

There are 2 known substitutes for 5310-00-404-1434: 2530-01-025-9488, 4730-01-117-3782. Verify interchangeability with system specifications before substitution.

What are the specifications of 66886?

Key specifications for 66886: Surface Treatment: PASSIVATE OVERALL; Center Hole Shape Style: ROUND; Surface Treatment Document and Classification: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Hole Diameter: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN. 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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