PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20641Washer,lock

Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. · NSN 5310-00-405-2713 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-405-2713 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-405-2713. Primary manufacturer part number: 20641.
Features
  • Washer,lock — FSC 5310
  • Material: STEEL CORROSION RESISTING OVERALL
  • Style Designator: FLAT EXTERNAL TEETH
  • Hole Diameter: 0.641 INCHES MINIMUM AND 0.663 INCHES MAXIMUM IN
  • Outside Diameter: 1.045 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN
  • Material Thickness: 0.045 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-405-2713, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.. Government technical data includes 5 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
NSN5310-00-405-2713
Primary Part Number20641
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCrane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
StatusACTIVE
MaterialSTEEL CORROSION RESISTING OVERALL
Style DesignatorFLAT EXTERNAL TEETH
Hole Diameter0.641 INCHES MINIMUM AND 0.663 INCHES MAXIMUM IN
Outside Diameter1.045 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN
Material Thickness0.045 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3110-00-120-3080709473 INTERCHANGEABLE
Bearing,roller,needle
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
5133-00-266-9243 INTERCHANGEABLE
Drill,twist
5330-00-285-6378 INTERCHANGEABLE
Seal,plain Encased
5365-00-420-447220641 INTERCHANGEABLE
Spacer,ring
Eaton Corporation Div Eaton Fluid Power
2520-00-495-627220641 INTERCHANGEABLE
Lever,clutch Plate
Eagle Crusher Co Inc Dba Stedman Machine Co
4730-01-517-1510C20641 INTERCHANGEABLE
Coupling,hose
Hydrasearch Company, Llc
Cross-Reference Index
Part NumberManufacturer
20641 PRIMARY Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. (USA)
Related Parts
3110-00-120-3080INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
709473
5133-00-266-9243INTERCHANGEABLE
DRILL,TWIST
5330-00-285-6378INTERCHANGEABLE
SEAL,PLAIN ENCASED
5365-00-420-4472INTERCHANGEABLE
SPACER,RING
20641
2520-00-495-6272INTERCHANGEABLE
LEVER,CLUTCH PLATE
20641
4730-01-517-1510INTERCHANGEABLE
COUPLING,HOSE
C20641

Frequently Asked Questions

What is NSN 5310-00-405-2713?

NSN 5310-00-405-2713 is a Washer,lock, manufactured by Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-405-2713?

NSN 5310-00-405-2713 has 1 cross-referenced part number: 20641 (Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.).

What NSN replaces 5310-00-405-2713?

There are 6 known substitutes for 5310-00-405-2713: 3110-00-120-3080, 5133-00-266-9243, 5330-00-285-6378 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20641?

Key specifications for 20641: Material: STEEL CORROSION RESISTING OVERALL; Style Designator: FLAT EXTERNAL TEETH; Hole Diameter: 0.641 INCHES MINIMUM AND 0.663 INCHES MAXIMUM IN; Outside Diameter: 1.045 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN. 5 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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