PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40529Washer,key

Brinkley Technology Group Llc Dba Hercules Manufacturing · NSN 5310-00-639-3796 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-639-3796 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-639-3796. Primary manufacturer part number: 40529.
Features
  • Washer,key — FSC 5310
  • Outside Diameter: 0.625 INCHES NOMINAL IN
  • External Key Quantity: 9
  • Internal Prebent Key Length: 0.0625 INCHES NOMINAL IN
  • Overall Distance Including Keys: 0.875 INCHES NOMINAL IN
  • Material Thickness: 0.042 INCHES NOMINAL IN
  • Style Designator: KEY
  • Internal Prebent Key Width: 0.120 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,key, cataloged under National Stock Number 5310-00-639-3796, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-639-3796
Primary Part Number40529
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerBrinkley Technology Group Llc Dba Hercules Manufacturing
StatusACTIVE
Outside Diameter0.625 INCHES NOMINAL IN
External Key Quantity9
Internal Prebent Key Length0.0625 INCHES NOMINAL IN
Overall Distance Including Keys0.875 INCHES NOMINAL IN
Material Thickness0.042 INCHES NOMINAL IN
Style DesignatorKEY
Internal Prebent Key Width0.120 INCHES NOMINAL IN
External Straight Key Width0.115 INCHES MAXIMUM IN
Hole Diameter0.406 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5340-00-097-471040529 INTERCHANGEABLE
Connector,rod End
L3harris Technologies, Inc Div Space & Airborne Systems
5961-00-402-1694 INTERCHANGEABLE
Semiconductor Device,thyristor
1650-00-766-835340529-1 INTERCHANGEABLE
Parts Kit,linear Actuating Cylin
Meggitt North Hollywood Inc
3455-00-995-190411530 INTERCHANGEABLE
Cutter,milling,woodruff Keyseat
Niagara Cutter Inc
6680-01-091-538940529 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
5950-01-181-4575PEI6445 INTERCHANGEABLE
Transformer,power
Precision Electronics, Inc
5310-01-446-2144 INTERCHANGEABLE
Washer,flat
Cross-Reference Index
Part NumberManufacturer
P18D3529 Westinghouse Electric Corp Power Generation-Generator Div (USA)
40529 PRIMARY Brinkley Technology Group Llc Dba Hercules Manufacturing (USA)
P18D3529 Westinghouse Electric Corp (USA)
40529 Hercules Engine Co Inc (USA)
Related Parts
5340-00-097-4710INTERCHANGEABLE
CONNECTOR,ROD END
40529
5961-00-402-1694INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
1650-00-766-8353INTERCHANGEABLE
PARTS KIT,LINEAR ACTUATING CYLIN
40529-1
3455-00-995-1904INTERCHANGEABLE
CUTTER,MILLING,WOODRUFF KEYSEAT
11530
6680-01-091-5389INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
40529
5950-01-181-4575INTERCHANGEABLE
TRANSFORMER,POWER
PEI6445
5310-01-446-2144INTERCHANGEABLE
WASHER,FLAT

Frequently Asked Questions

What is NSN 5310-00-639-3796?

NSN 5310-00-639-3796 is a Washer,key, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-639-3796?

NSN 5310-00-639-3796 has 4 cross-referenced part numbers: P18D3529 (Westinghouse Electric Corp Power Generation-Generator Div), 40529 (Brinkley Technology Group Llc Dba Hercules Manufacturing), P18D3529 (Westinghouse Electric Corp), 40529 (Hercules Engine Co Inc).

What NSN replaces 5310-00-639-3796?

There are 7 known substitutes for 5310-00-639-3796: 5340-00-097-4710, 5961-00-402-1694, 1650-00-766-8353 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40529?

Key specifications for 40529: Outside Diameter: 0.625 INCHES NOMINAL IN; External Key Quantity: 9; Internal Prebent Key Length: 0.0625 INCHES NOMINAL IN; Overall Distance Including Keys: 0.875 INCHES NOMINAL IN. 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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