PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T289Washer,key

Caterpillar Inc Div Caterpillar Defense · NSN 5310-00-282-0501 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-282-0501 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-282-0501. Primary manufacturer part number: T289.
Features
  • Washer,key — FSC 5310
  • Hole Diameter: 1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM IN
  • Material: STEEL OVERALL
  • Material Thickness: 0.055 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
  • External Straight Key Length: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
  • Internal Straight Key Width: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
  • External Straight Key Width: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
  • Overall Distance Including Keys: 2.365 INCHES MINIMUM AND 2.385 INCHES MAXIMUM 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 5310-00-282-0501, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 12 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-282-0501
Primary Part NumberT289
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusCANCELLED
Hole Diameter1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Material Thickness0.055 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
External Straight Key Length0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
Internal Straight Key Width0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
External Straight Key Width0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
Overall Distance Including Keys2.365 INCHES MINIMUM AND 2.385 INCHES MAXIMUM IN
Style DesignatorKEY
Outside Diameter2.052 INCHES MINIMUM AND 2.072 INCHES MAXIMUM IN
Distance From Centerline to Top of Internal Key0.53125 INCHES NOMINAL IN
Internal Key Quantity1
External Key Quantity2
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
6135-00-931-90495-1607 INTERCHANGEABLE
Battery,nonrechargeable
Bird Electronic Corporation Div Bird Electronic Corp
Cross-Reference Index
Part NumberManufacturer
T289 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
6135-00-931-9049INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
5-1607

Frequently Asked Questions

What is NSN 5310-00-282-0501?

NSN 5310-00-282-0501 is a Washer,key, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-282-0501?

NSN 5310-00-282-0501 has 1 cross-referenced part number: T289 (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 5310-00-282-0501?

There is 1 known substitute for 5310-00-282-0501: 6135-00-931-9049. Verify interchangeability with system specifications before substitution.

What are the specifications of T289?

Key specifications for T289: Hole Diameter: 1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM IN; Material: STEEL OVERALL; Material Thickness: 0.055 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN; External Straight Key Length: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-282-0501 still in active supply?

NSN 5310-00-282-0501 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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