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Jam Nut 3/4 - 16 Fine Thread - 7/16" High Automann JNF340 E - 1107 JNF340 - Automann - FLEETPRO PARTS & TIRES
Jam Nut 3/4 - 16 Fine Thread - 7/16" High Automann JNF340 E - 1107 JNF340 - Automann - FLEETPRO PARTS & TIRES
Automann

Jam Nut 3/4-16 Fine Thread - 7/16" High Automann JNF340 E-1107

In stock
SKU: JNF340
$0.54

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  • Precision Locking Security: Specifically designed as a secondary "jam" nut to prevent primary fasteners from backing off under the intense vibrations of long-haul trucking.
  • Low-Profile 7/16" Design: The slim 7/16-inch height allows for secure installation in tight clearance areas, such as steering linkages and suspension rod ends.
  • Fine Thread Performance: Features 3/4"-16 fine threading for increased surface area contact and higher clamping force, ensuring your alignment stays locked in.
  • Heavy-Duty Zinc/Steel Finish: Manufactured from high-tensile steel to resist stripping and coated for corrosion resistance against road salt and moisture.
  • Universal Component Match: Acts as a seamless, high-quality replacement for a massive range of OEM hardware, including Mack, Peterbilt, Dana, and Hendrickson.

Ensure your suspension and axle adjustments stay exactly where you set them with this high-strength Jam Nut 3/4-16 Fine Thread distributed by FleetPro Parts & Tires. In the high-vibration world of heavy-duty trucking, a standard nut can back off, leading to alignment shift, loose steering components, and catastrophic hardware failure. Manufactured by Automann to strict Fleet Standard specifications, this low-profile jam nut is designed to "lock" primary nuts in place. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, diesel repair shops, and owner-operators nationwide.

Vibration Resistance: The Jam Nut 3/4-16 Fine Thread Advantage

This Jam Nut 3/4-16 Fine Thread is engineered for precision applications where space is tight but security is non-negotiable. Featuring a 7/16-inch height, it provides a low-profile footprint perfect for tie rod ends, torque rods, and axle spindles. The 3/4"-16 fine threading allows for micro-adjustments and superior clamping force compared to coarse threads, ensuring your suspension geometry remains stable even under the heaviest payloads and roughest highway conditions.

At FleetPro Parts & Tires, we know that even the smallest piece of hardware can be the difference between a successful trip and a roadside breakdown. This versatile jam nut is a universal staple in heavy-duty maintenance, acting as a direct replacement for highly searched industry numbers like Euclid E-1107, Dana 12052, and Mack 21AX220. Don't trust your safety to hardware store bolts—stick with the fleet-grade reliability of Automann.

Vehicle Fitment & Compatibility

This heavy-duty aftermarket jam nut features a universal design intended for the following commercial applications:

  • Make/Systems: Dana/Spicer, Reyco Granning, Standard Forge, Watson and Chalin, Hendrickson, and Mack
  • Component Group: Steering Linkage, Suspension Torque Rods, Axle Spindles
  • Thread Specification: 3/4"-16 UNF (Fine Thread)

Direct Replacement & Cross-Reference Numbers:

This Automann hardware serves as a direct exact-fit replacement for the following part numbers:

  • Euclid Interchange: E-1107, E1107
  • Dana/Spicer OEM: 12052
  • Mack OEM: 21AX220, 21AX56, 25089237
  • Hendrickson/Turner OEM: SA13008
  • Peterbilt OEM: 2309254008
  • Automann Distributor #: JNF340

Technical Specifications

  • Component Type: Low-Profile Jam Nut
  • Thread Size: 3/4 Inch
  • Thread Pitch: 16 (Fine Thread / UNF)
  • Nut Height: 7/16 Inch
  • Product Level: Fleet Standard Aftermarket
  • Brand: Automann (Distributed by FleetPro Parts & Tires)