Richeer 20pc Black 1.4" Closed-End Bulge Acorn Lug Nuts 1/2-20 Thread, 3/4" Hex, SCM435 Steel

Richeer 20pcs black 1.4" closed-end bulge acorn lug nuts are heavy-duty, corrosion-resistant wheel fasteners engineered to replace factory lug nuts on many 5-lug trucks and Jeeps.

These lug nuts combine a bulge acorn profile with a closed-end design and a 1/2-20 thread to provide secure wheel retention and a finished appearance. Constructed from SCM435 cold-forged steel and heat-treated for strength, each nut measures 1.4 inches long with a 3/4" (19mm) hex and a 60° conical seat. A durable protective coating helps resist rust while preserving the black finish, and the precise internal threads are made to fit compatible wheel studs reliably.

Will these lug nuts fit my vehicle?

If your vehicle uses 1/2-20 wheel studs with a 60° conical (bulge) seat and a 5-lug pattern, these nuts are likely compatible. They are commonly used on a wide range of trucks, SUVs, and classic vehicles—especially many Dodge, Ford, Jeep, and Chrysler models listed below. Always confirm your stud thread size and seat type before purchase.

• Thread: 1/2-20 (UNF)
• Seat: 60° conical (bulge acorn)
• Length: 1.4" (35.56 mm); Hex: 3/4" (19 mm)
• Compatible examples: select Nitro, RAM 1500, Bronco, F-150 (5-lug), Mustang, Cherokee, CJ, Comanche, Commander, Grand Cherokee (5-lug), Liberty, TJ, Wrangler

How strong and durable are these lug nuts?

Richeer lug nuts are cold-forged from SCM435 steel and then heat-treated to increase tensile strength and wear resistance. The manufacturing process produces tougher fasteners than cast or stamped alternatives, so they stand up to the loads and torque required for wheel installation and operation. The applied surface coating adds an extra layer of protection against corrosion.

• Material: SCM435 cold-forged steel
• Heat treatment for improved toughness
• Protective coating for rust resistance and an attractive black finish
• Precise machining for consistent thread engagement

What is the benefit of the closed-end bulge acorn design?

The closed-end acorn shape hides the wheel stud tips for a cleaner look and prevents contaminants from entering the nut, while the bulge (acorn) profile provides proper seating in factory-style conical seats. That combination keeps your wheels secure, improves the appearance around the lug area, and reduces the likelihood of dirt or water contacting the stud ends.

• Closed end caps off stud tips for neat appearance
• Bulge acorn profile matches 60° conical seats
• Helps reduce exposure of studs to grime and moisture
• Works with standard 3/4" (19mm) sockets for installation

What comes in the package and what support is offered?

Each purchase includes twenty black closed-end spline acorn lug nuts—enough to replace lug nuts on four 5-lug wheels or to keep spares on hand. Richeer provides a 12-month after-sales support policy to help resolve fitment or product issues. Keep the vehicle’s lug torque and installation instructions from your manufacturer when servicing wheels.

• Package: 20 × closed-end bulge acorn lug nuts, black finish
• Tooling: requires 3/4" (19mm) hex socket or compatible spline adapter
• Support: 12 months after-sales service from Richeer
• Note: verify stud dimensions and seat type before installation

Who is this for: These lug nuts suit owners of 5-lug trucks, SUVs, and Jeeps who need a durable replacement or aesthetic upgrade to black closed-end acorn nuts. They are ideal for restorations, replacement of worn or corroded factory nuts, or anyone who prefers the finished look and added stud protection of closed-end acorns. Professional installers and DIYers should confirm thread pitch and seat geometry before fitting to ensure safe, correct installation.