Dexter Axle Nut, Washer and Cotter Pin Kit, 1"-14 UNS Threads, K71-G01-50

The Dexter K71-G01-50 is an axle nut, washer, and cotter pin kit sized for 1"-14 UNS threaded trailer axle spindles. It is used to secure the wheel bearing assembly onto the spindle, providing the correct clamping hardware for hub and bearing service, repacking, or a full hub replacement. The kit bundles the three fasteners needed for a proper spindle-nut installation: a spindle nut, a flat washer, and a cotter pin, so you have matched hardware on hand rather than sourcing each piece separately.

The nut and washer are made from alloy steel for the strength needed to maintain proper bearing preload under trailer loads, and the cotter pin locks the spindle nut in place to prevent it from backing off during towing. Because the components are sized to 1"-14 UNS threads, this kit is intended for trailer axle spindles that use that thread pitch. It is a straightforward, low-cost item to keep on hand for routine hub and bearing maintenance.

Specifications

• Brand: Dexter
• Manufacturer Part Number: K71-G01-50
• Thread Size: 1"-14 UNS
• Kit Contents: Spindle nut, washer, cotter pin
• Material: Alloy steel
• Fastener Type: Cotter pin
• Weight: 0.22 pounds
• Package Dimensions: 6.75 x 3.75 x 1.62 inches
• Application: Trailer axle spindle / hub and bearing hardware

Frequently Asked Questions

What is included in the Dexter K71-G01-50 kit? The kit includes a spindle nut, a flat washer, and a cotter pin, the three fasteners needed to secure a trailer hub and bearing assembly onto the axle spindle.

What thread size does this kit fit? The Dexter K71-G01-50 nut and washer are sized for 1"-14 UNS threaded trailer axle spindles.

What is the nut and washer made of? Both the nut and washer in the K71-G01-50 kit are alloy steel for durability under bearing preload.

How much does the K71-G01-50 kit weigh? This Dexter hardware kit weighs 0.22 pounds.

What is the cotter pin used for in this kit? The cotter pin passes through a drilled hole in the spindle and the castellated spindle nut to lock the nut in place so it cannot loosen during towing.

When would I need to replace this hardware? Replace the spindle nut, washer, and cotter pin whenever you service or repack a trailer wheel bearing, since a used cotter pin should not be reinstalled and the nut and washer should be inspected for wear.

Is the K71-G01-50 a genuine Dexter part? Yes, K71-G01-50 is the Dexter manufacturer part number for this nut, washer, and cotter pin kit.

Does this kit work on any trailer axle? It is sized for spindles with 1"-14 UNS threads; check your spindle thread size before ordering to confirm fit.

What are the package dimensions of this kit? The K71-G01-50 kit measures 6.75 x 3.75 x 1.62 inches as packaged.

Can I buy just the nut or just the cotter pin separately? The K71-G01-50 is sold as a complete kit containing the nut, washer, and cotter pin together rather than as individual components.