PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20430Washer,recessed

Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. · NSN 5310-00-596-6650 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-596-6650 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-596-6650. Primary manufacturer part number: 20430.
Features
  • Washer,recessed — FSC 5310
  • Style Designator: RECESSED
  • Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
  • Material: STEEL COMP 8750 OVERALL
  • Material Document and Classification: AMS 6328 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Material Thickness: 0.060 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN
  • Hole Diameter: 0.788 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN
  • Recess Angle: 90.0 DEGREES NOMINAL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 8750 Overall construction
General Description

The Washer,recessed, cataloged under National Stock Number 5310-00-596-6650, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-596-6650
Primary Part Number20430
Item NameWasher,recessed
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerPratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
StatusCANCELLED
Style DesignatorRECESSED
Hardness Rating40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
MaterialSTEEL COMP 8750 OVERALL
Material Document and ClassificationAMS 6328 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Material Thickness0.060 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN
Hole Diameter0.788 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN
Recess Angle90.0 DEGREES NOMINAL
Outside Diameter1.125 INCHES NOMINAL IN
Recess Diameter0.849 INCHES MINIMUM AND 0.869 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
4730-00-114-0911ASC25-D INTERCHANGEABLE
Clamp,hose
Curtis Dyna-Fog, Ltd.
5307-00-332-939120430 INTERCHANGEABLE
Stud,welding
Northrop Grumman Systems Corporation Div Marine Systems
6685-00-537-2490 INTERCHANGEABLE
Gage,pressure,dial Indicating
5962-01-015-8531LM120H-5.0/883B INTERCHANGEABLE
Microcircuit,linear
National Semiconductor Corporation
4940-01-037-8018 INTERCHANGEABLE
Gun,air Blow
5975-01-298-3340204-30 INTERCHANGEABLE
Conduit Assembly,flexible
Dcx-Chol Enterprises, Inc.
5325-01-313-308020430 INTERCHANGEABLE
Grommet,nonmetallic
Alliance Laundry Systems Llc
2920-01-494-831620430 INTERCHANGEABLE
Regulator,engine Generator
Sure Power, Inc Dba Eaton Sure Power, Inc
7490-01-554-980320430 INTERCHANGEABLE
Shredding Machine,paper
Dahle North America Inc
6515-01-590-497423820 INTERCHANGEABLE
Head,otoscope Operating
Welch Allyn, Inc.
Cross-Reference Index
Part NumberManufacturer
A20430 Colt Industries Operating Corp Pratt and Whitney Machine Tool Div
20430 PRIMARY Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
Related Parts
4730-00-114-0911INTERCHANGEABLE
CLAMP,HOSE
ASC25-D
5307-00-332-9391INTERCHANGEABLE
STUD,WELDING
20430
6685-00-537-2490INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
5962-01-015-8531INTERCHANGEABLE
MICROCIRCUIT,LINEAR
LM120H-5.0/883B
4940-01-037-8018INTERCHANGEABLE
GUN,AIR BLOW
5975-01-298-3340INTERCHANGEABLE
CONDUIT ASSEMBLY,FLEXIBLE
204-30
5325-01-313-3080INTERCHANGEABLE
GROMMET,NONMETALLIC
20430
2920-01-494-8316INTERCHANGEABLE
REGULATOR,ENGINE GENERATOR
20430
7490-01-554-9803INTERCHANGEABLE
SHREDDING MACHINE,PAPER
20430
6515-01-590-4974INTERCHANGEABLE
HEAD,OTOSCOPE OPERATING
23820

Frequently Asked Questions

What is NSN 5310-00-596-6650?

NSN 5310-00-596-6650 is a Washer,recessed, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-596-6650?

NSN 5310-00-596-6650 has 2 cross-referenced part numbers: A20430 (Colt Industries Operating Corp Pratt and Whitney Machine Tool Div), 20430 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).

What NSN replaces 5310-00-596-6650?

There are 10 known substitutes for 5310-00-596-6650: 4730-00-114-0911, 5307-00-332-9391, 6685-00-537-2490 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20430?

Key specifications for 20430: Style Designator: RECESSED; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM; Material: STEEL COMP 8750 OVERALL; Material Document and Classification: AMS 6328 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-596-6650 still in active supply?

NSN 5310-00-596-6650 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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