Flanged Lock Nut 1/2in-13 - Heavy Duty Suspension Hardware - Autocar 8397200 Hendrickson 60819000 FLNC102

A suspension repair is only as good as the hardware holding it together. This Flanged Lock Nut in 1/2in-13 is a grade-marked threaded fastener built for heavy-duty chassis and suspension work, where a nut that backs off means a loose spring hanger, a shifting shock mount, or a bolt slowly walking its way out on the highway. Manufactured by Automann to Fleet Standard specifications, it is stocked heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, trailer repair shops, and owner-operators nationwide.

Clamp Load That Stays Put: The Flanged Lock Nut Advantage

This fastener runs a 1/2in-13 thread, one of the most common sizes found across heavy-duty chassis and suspension hardware, and the integrated flange acts as a built-in bearing surface. That flange spreads clamp load over a wider area than a plain hex nut, so the fastener seats evenly instead of digging into the bracket it is torqued against. Because this is a lock nut, it resists the slow back-off that plain nuts suffer under the constant vibration of a loaded Class 8 chassis, which is exactly why suspension builders specify a locking fastener at these joints in the first place.

At FleetPro Parts & Tires, we know it is the small parts that strand a truck. At 0.04 lbs apiece these are cheap enough to keep a handful on the shelf so you never have to reuse a questionable nut, and you should always torque to spec on installation. This fastener is a direct replacement for highly searched industry numbers including Autocar 8397200, Dynacraft D85020636 and Hendrickson 60819000.

Vehicle Fitment & Compatibility

This heavy-duty fastener uses a universal design intended for the following commercial applications:

• Make/Model: Universal - heavy-duty truck, tractor and trailer chassis
• Suspension Applications: Hendrickson, International, Ridewell, SAF Holland/Neway and Watson and Chalin
• Component Group: Suspension & Steering / Chassis Hardware
• Installation: Chassis and suspension hardware replacement - always torque to spec

Direct Replacement & Cross-Reference Numbers:

This Automann lock nut serves as a direct replacement for the following part numbers:

• Autocar Interchange: 8397200
• Dynacraft Interchange: D85020636
• Hendrickson Interchange: 60819000
• Automann Distributor #: FLNC102

Technical Specifications

• Component Type: Flanged Lock Nut
• Thread: 1/2in-13
• Weight: 0.04 lbs
• Package Dims: 1.25 x 1.25 x 0.75 in
• Condition: New
• Warranty: 1-Year FleetPro Warranty
• Product Level: Fleet Standard Aftermarket
• Brand: Automann (Distributed by FleetPro Parts & Tires)