9in Ford Pinion Nut - Fits 28-Spline Pinion

The STRANGE 9-inch Ford Pinion Nut (Part No. N1922A) is a precision-engineered fastener designed specifically for 28-spline pinion assemblies in Ford 9-inch differential housings. This critical component secures the pinion gear to the input shaft, representing one of the most vital fastening points in any high-performance or heavy-duty differential setup. Whether you're building a street performance 9-inch, reinforcing an off-road rig, or restoring a classic muscle car, this nut ensures the pinion remains locked to the shaft under extreme torque and acceleration loads.

Manufactured by STRANGE, a trusted name in differential and rear-end components, this pinion nut is engineered to tight tolerances and built to handle the stresses that factory hardware often cannot. The 28-spline specification ensures proper fitment with compatible pinion shafts and allows for secure engagement without stripped threads. At just 0.15 lbs and compact dimensions of 2.35 x 1.1 x 2.95 inches, this fastener is lightweight yet robust. During reassembly, proper torque specification and lock washer use are essential—this nut must be torqued to manufacturer specification and secured with safety wire or a locking mechanism to prevent loosening under continuous operation.

Buyers who select this part typically fall into three categories: gear ratio swaps and differential rebuilds, high-performance engine swaps requiring a stout rear end, and off-road or drag racing builds where factory hardware is insufficient. This nut is a core component of differential assembly work—not a complete solution on its own, but absolutely necessary when you're doing a full 9-inch rebuild or conversion. OEM pinion nuts may show wear, corrosion, or stripped threads after years of use; replacing them with quality STRANGE hardware eliminates guesswork during reassembly and ensures long-term reliability in your completed drivetrain.

The Ford 9-inch differential remains one of the most popular choices for custom vehicles and performance builds due to its strength, availability, and versatility. Whether upgrading to a higher gear ratio, installing posi-traction units, or swapping into a different platform, using OEM-quality fasteners like this STRANGE pinion nut is the mark of a professional-grade rebuild. Proper fastener selection directly impacts differential longevity and the performance of your entire drivetrain.