PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11EJT4Washer,key

Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations · NSN 5310-00-359-1334 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-359-1334 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-359-1334. Primary manufacturer part number: 11EJT4.
Features
  • Washer,key — FSC 5310
  • Internal Straight Key Width: 0.242 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Hole Diameter: 2.263 INCHES NOMINAL IN
  • Material Thickness: 0.060 INCHES NOMINAL IN
  • Internal Key Quantity: 1
  • Outside Diameter: 3.310 INCHES NOMINAL IN
  • Distance From Centerline to Top of Internal Key: 1.010 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 5310-00-359-1334, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-359-1334
Primary Part Number11EJT4
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations
StatusCANCELLED
Internal Straight Key Width0.242 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Hole Diameter2.263 INCHES NOMINAL IN
Material Thickness0.060 INCHES NOMINAL IN
Internal Key Quantity1
Outside Diameter3.310 INCHES NOMINAL IN
Distance From Centerline to Top of Internal Key1.010 INCHES NOMINAL IN
Style DesignatorKEY
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5950-00-240-6940 INTERCHANGEABLE
Transformer,audio Frequency
5935-00-350-1834SMB657092 INTERCHANGEABLE
Connector,receptacle,electrical
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5998-00-425-7638526-1 INTERCHANGEABLE
Circuit Card Assembly
Marc Alan Group the, Inc
2990-00-588-41311912 INTERCHANGEABLE
Muffler,exhaust
Arvin Industries Inc
5935-00-642-36525261 INTERCHANGEABLE
Connector,receptacle,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
2910-00-737-6914 INTERCHANGEABLE
Rotor Fuel Pump
5330-00-765-2921G8-061033 INTERCHANGEABLE
Gasket
Norwalk Compreseer Company Inc Dba Norwalk Compressor Company
5935-00-982-9711 INTERCHANGEABLE
Connector,receptacle,electrical
5935-01-012-3081 INTERCHANGEABLE
Connector,receptacle,electrical
9390-01-021-2223 INTERCHANGEABLE
Tape,reflective
Cross-Reference Index
Part NumberManufacturer
072451 Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 (USA)
1229S721 Rockwell International Corp Industrial Products Group (USA)
1229S721 Meritor Heavy Vehicle Systems, Llc (USA)
11EJT4 PRIMARY Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations (USA)
1229-S-721 Zf Industrieantriebe Witten Gmbh (DEU)
072451 General Motors Llc Dba General Motors Llc (USA)
1229S721 Meritor Industrial Products, Llc (USA)
304975 Diamond Reo Truck Co (USA)
5261 PRIMARY Mitsubishi Caterpillar Forklift America, Inc (USA)
R002301 PRIMARY Meritor Heavy Vehicle Systems, Llc (USA)
Related Parts
5950-00-240-6940INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5935-00-350-1834INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
SMB657092
5998-00-425-7638INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
526-1
2990-00-588-4131INTERCHANGEABLE
MUFFLER,EXHAUST
1912
5935-00-642-3652INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5261
2910-00-737-6914INTERCHANGEABLE
ROTOR FUEL PUMP
5330-00-765-2921INTERCHANGEABLE
GASKET
G8-061033
5935-00-982-9711INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5935-01-012-3081INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
9390-01-021-2223INTERCHANGEABLE
TAPE,REFLECTIVE
5915-01-062-8673INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
953028-3
2090-01-079-9361INTERCHANGEABLE
CHAIR,PLANESMAN STATION,LEFT HAN
525-127

Frequently Asked Questions

What is NSN 5310-00-359-1334?

NSN 5310-00-359-1334 is a Washer,key, manufactured by Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-359-1334?

NSN 5310-00-359-1334 has 10 cross-referenced part numbers: 072451 (Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02), 1229S721 (Rockwell International Corp Industrial Products Group), 1229S721 (Meritor Heavy Vehicle Systems, Llc), 11EJT4 (Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations), 1229-S-721 (Zf Industrieantriebe Witten Gmbh) and 5 more.

What NSN replaces 5310-00-359-1334?

There are 12 known substitutes for 5310-00-359-1334: 5950-00-240-6940, 5935-00-350-1834, 5998-00-425-7638 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11EJT4?

Key specifications for 11EJT4: Internal Straight Key Width: 0.242 INCHES NOMINAL IN; Material: STEEL OVERALL; Hole Diameter: 2.263 INCHES NOMINAL IN; Material Thickness: 0.060 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-359-1334 still in active supply?

NSN 5310-00-359-1334 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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