PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W34Washer,key

Whittet-Higgins Company · NSN 5310-00-186-0987 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-186-0987 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-186-0987. Primary manufacturer part number: W34.
Features
  • Washer,key — FSC 5310
  • Style Designator: KEY
  • Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL
  • Outside Diameter: 8.031 INCHES MINIMUM AND 8.091 INCHES MAXIMUM IN
  • Overall Distance Including Keys: 9.062 INCHES NOMINAL IN
  • Internal Prebent Key Width: 0.625 INCHES MINIMUM AND 0.715 INCHES MAXIMUM IN
  • External Key Quantity: 19
  • External Prebent Key Width: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1005 or Steel Comp 1006 or Steel Comp 1008 or Steel Comp 1010 or Steel Comp 1011 or Steel Comp 1012 or Steel Comp 1013 or Steel Comp 1015 or Steel Comp 1016 or Steel Comp 1017 or Steel Comp 1018 or Steel Comp 1019 or Steel Comp 1020 or Steel Comp 1021 or Steel Comp 1022 or Steel Comp 1026 or Steel Comp 1527 or Steel Comp 1029 or Steel Comp 1030 or Steel Comp 1031 or Steel Comp 1033 or Steel Comp 1034 or Steel Comp 1035 Overall construction
General Description

The Washer,key, cataloged under National Stock Number 5310-00-186-0987, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Whittet-Higgins Company. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 17 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-186-0987
Primary Part NumberW34
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerWhittet-Higgins Company
StatusACTIVE
Style DesignatorKEY
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
Outside Diameter8.031 INCHES MINIMUM AND 8.091 INCHES MAXIMUM IN
Overall Distance Including Keys9.062 INCHES NOMINAL IN
Internal Prebent Key Width0.625 INCHES MINIMUM AND 0.715 INCHES MAXIMUM IN
External Key Quantity19
External Prebent Key Width0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
Hole Diameter6.764 INCHES MINIMUM AND 6.799 INCHES MAXIMUM IN
Material Thickness0.156 INCHES NOMINAL IN
MaterialSTEEL COMP 1005 OR STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1026 OR STEEL COMP 1527 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1031 OR STEEL COMP 1033 OR STEEL COMP 1034 OR STEEL COMP 1035 OVERALL
Internal Prebent Key Length0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5935-00-147-0231722102104 INTERCHANGEABLE
Plug,tip
Virginia Panel Corporation Dba Virginia Panel Corp
3110-00-156-1711 INTERCHANGEABLE
Bearing,ball,thrust
5950-00-280-4571 INTERCHANGEABLE
Transformer,power
6145-00-443-01798727 INTERCHANGEABLE
Cable,special Purpose,electrical
Belden Wire and Cable Co Wire and Cable Office
5960-00-607-9784 INTERCHANGEABLE
Electron Tube
3120-00-674-1725R-656 PC51 INTERCHANGEABLE
Bearing,sleeve
Marine Diesel, Inc. Dba Marine Diesel
1620-00-970-29208727 INTERCHANGEABLE
Retainer,spring,ste
Goodrich Corporation
5935-01-067-94208727 INTERCHANGEABLE
Connector,receptacle,electrical
L3 Technologies, Inc. Div Communication Systems-West
4820-01-129-0832A10644.002.142 INTERCHANGEABLE
Disk,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-129-1832A6790.042.127 INTERCHANGEABLE
Stem,fluid Valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Cross-Reference Index
Part NumberManufacturer
W34 Whittet-Higgins Company (USA)
8727FAWICK General Motors Corp (USA)
D2-7587PC719 Usm Corp Sub of Emhart Industries Inc Farrel Co Div (USA)
MG36FPC1-13 Reliance Electric Company Dba Reliance & Dodge Brands (USA)
D2-9861PC719 Usm Corp Sub of Emhart Industries Inc Farrel Co Div (USA)
MILW21338TYPE1CLASS1SIZE34 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS19070-341 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MG45D1-13 Reliance Electric Company Dba Reliance & Dodge Brands (USA)
3308224 General Motors Corp (USA)
W34 The Timken Corporation (USA)
W34 General Motors Corp (USA)
W34 Skf Usa Inc. (USA)
W34 Naval Ship Systems Command (USA)
W34 Reliance Electric Company Dba Reliance & Dodge Brands (USA)
W34 Usm Corp Sub of Emhart Industries Inc Farrel Co Div (USA)
D2-7554PC719 Usm Corp Sub of Emhart Industries Inc Farrel Co Div (USA)
8727 Eaton Corporation Dba Airflex Div Div Airflex (USA)
Related Parts
5935-00-147-0231INTERCHANGEABLE
PLUG,TIP
722102104
3110-00-156-1711INTERCHANGEABLE
BEARING,BALL,THRUST
5950-00-280-4571INTERCHANGEABLE
TRANSFORMER,POWER
6145-00-443-0179INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
8727
5960-00-607-9784INTERCHANGEABLE
ELECTRON TUBE
3120-00-674-1725INTERCHANGEABLE
BEARING,SLEEVE
R-656 PC51
1620-00-970-2920INTERCHANGEABLE
RETAINER,SPRING,STE
8727
5935-01-067-9420INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
8727
4820-01-129-0832INTERCHANGEABLE
DISK,VALVE
A10644.002.142
4820-01-129-1832INTERCHANGEABLE
STEM,FLUID VALVE
A6790.042.127
5999-01-322-2529INTERCHANGEABLE
HEATER,THERMAL RELEASE
W34
5330-01-362-7888INTERCHANGEABLE
SEAL,NONMETALLIC ROUND SECTION

Frequently Asked Questions

What is NSN 5310-00-186-0987?

NSN 5310-00-186-0987 is a Washer,key, manufactured by Whittet-Higgins Company, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-186-0987?

NSN 5310-00-186-0987 has 17 cross-referenced part numbers: W34 (Whittet-Higgins Company), 8727FAWICK (General Motors Corp), D2-7587PC719 (Usm Corp Sub of Emhart Industries Inc Farrel Co Div), MG36FPC1-13 (Reliance Electric Company Dba Reliance & Dodge Brands), D2-9861PC719 (Usm Corp Sub of Emhart Industries Inc Farrel Co Div) and 12 more.

What NSN replaces 5310-00-186-0987?

There are 12 known substitutes for 5310-00-186-0987: 5935-00-147-0231, 3110-00-156-1711, 5950-00-280-4571 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of W34?

Key specifications for W34: Style Designator: KEY; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 8.031 INCHES MINIMUM AND 8.091 INCHES MAXIMUM IN; Overall Distance Including Keys: 9.062 INCHES NOMINAL 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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