PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55420Washer,flat

Parker Hannifin Corporation Div Hydraulic Systems Division · NSN 5310-00-913-8632 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-913-8632 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-913-8632. Primary manufacturer part number: 55420.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 0.433 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN
  • Center Hole Shape Style: ROUND
  • Material Document and Classification: MIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 3RD MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 4TH MATERIAL RESPONSE OVERALL
  • Material: STEEL CORROSION RESISTING OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Peripheral Shape Style: DEE
  • Width: 0.391 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting or Steel Comp 321 or Steel Comp 347 or Steel Comp 348 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-913-8632, 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 9 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
NSN5310-00-913-8632
Primary Part Number55420
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Hydraulic Systems Division
StatusACTIVE
Overall Diameter0.433 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Material Document and ClassificationMIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 3RD MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 4TH MATERIAL RESPONSE OVERALL
MaterialSTEEL CORROSION RESISTING OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleDEE
Width0.391 INCHES NOMINAL IN
Thickness0.063 INCHES NOMINAL IN
Hole Diameter0.203 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5310-00-208-732455420 INTERCHANGEABLE
Nut,plain,knurled
L3harris Technologies, Inc Div Space & Airborne Systems
1420-00-790-4994 INTERCHANGEABLE
Shaft,fi,ed
3455-00-812-3584 INTERCHANGEABLE
Cutter,milling,end
2910-01-038-15094049337 INTERCHANGEABLE
Pump,fuel,cam Actuated
Chrysler Corp Service and Parts Opns
5120-01-534-143355420 INTERCHANGEABLE
Screwdriver,cross Tip
Aerovironment, Inc. Dba Aerovironment Inc
1080-01-541-26572KP716 INTERCHANGEABLE
Cover,camouflage Screening
Oshkosh Defense Llc
Cross-Reference Index
Part NumberManufacturer
55420 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
Related Parts
5310-00-208-7324INTERCHANGEABLE
NUT,PLAIN,KNURLED
55420
1420-00-790-4994INTERCHANGEABLE
SHAFT,FI,ED
3455-00-812-3584INTERCHANGEABLE
CUTTER,MILLING,END
2910-01-038-1509INTERCHANGEABLE
PUMP,FUEL,CAM ACTUATED
4049337
5120-01-534-1433INTERCHANGEABLE
SCREWDRIVER,CROSS TIP
55420
1080-01-541-2657INTERCHANGEABLE
COVER,CAMOUFLAGE SCREENING
2KP716

Frequently Asked Questions

What is NSN 5310-00-913-8632?

NSN 5310-00-913-8632 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 5310-00-913-8632?

NSN 5310-00-913-8632 has 1 cross-referenced part number: 55420 (Parker Hannifin Corporation Div Hydraulic Systems Division).

What NSN replaces 5310-00-913-8632?

There are 6 known substitutes for 5310-00-913-8632: 5310-00-208-7324, 1420-00-790-4994, 3455-00-812-3584 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 55420?

Key specifications for 55420: Overall Diameter: 0.433 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN; Center Hole Shape Style: ROUND; Material Document and Classification: MIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 3RD MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 4TH MATERIAL RESPONSE OVERALL; Material: STEEL CORROSION RESISTING OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OVERALL. 9 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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