PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

PE66Washer,key

Wisconsin Motors, Llc · NSN 5310-00-638-5085 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-638-5085 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-638-5085. Primary manufacturer part number: PE66.
Features
  • Washer,key — FSC 5310
  • External Straight Key Width: 0.250 INCHES MAXIMUM IN
  • Outside Diameter: 1.750 INCHES NOMINAL IN
  • External Straight Key Length: 0.250 INCHES NOMINAL IN
  • Material Thickness: 0.065 INCHES NOMINAL IN
  • External Key Quantity: 7
  • Material: STEEL OVERALL
  • Overall Distance Including Keys: 2.250 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 5310-00-638-5085, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Wisconsin Motors, Llc. Government technical data includes 10 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-638-5085
Primary Part NumberPE66
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerWisconsin Motors, Llc
StatusCANCELLED
External Straight Key Width0.250 INCHES MAXIMUM IN
Outside Diameter1.750 INCHES NOMINAL IN
External Straight Key Length0.250 INCHES NOMINAL IN
Material Thickness0.065 INCHES NOMINAL IN
External Key Quantity7
MaterialSTEEL OVERALL
Overall Distance Including Keys2.250 INCHES NOMINAL IN
Peening Key Length0.125 INCHES NOMINAL IN
Style DesignatorKEY
Hole Diameter1.156 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
6150-01-647-3879PE66 INTERCHANGEABLE
Power Strip,electrical Outlet
Schneider Electric It Corporation Dba a P S Sales & Service Div Schneider Electric It Corp.
Cross-Reference Index
Part NumberManufacturer
PE66 PRIMARY Wisconsin Motors, Llc (USA)
7768119 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
Related Parts
6150-01-647-3879INTERCHANGEABLE
POWER STRIP,ELECTRICAL OUTLET
PE66

Frequently Asked Questions

What is NSN 5310-00-638-5085?

NSN 5310-00-638-5085 is a Washer,key, manufactured by Wisconsin Motors, Llc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-638-5085?

NSN 5310-00-638-5085 has 2 cross-referenced part numbers: PE66 (Wisconsin Motors, Llc), 7768119 (U S Army Tank Automotive Command Amsta-Im-Mm).

What NSN replaces 5310-00-638-5085?

There is 1 known substitute for 5310-00-638-5085: 6150-01-647-3879. Verify interchangeability with system specifications before substitution.

What are the specifications of PE66?

Key specifications for PE66: External Straight Key Width: 0.250 INCHES MAXIMUM IN; Outside Diameter: 1.750 INCHES NOMINAL IN; External Straight Key Length: 0.250 INCHES NOMINAL IN; Material Thickness: 0.065 INCHES NOMINAL IN. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-638-5085 still in active supply?

NSN 5310-00-638-5085 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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