NPAUTO Spline Wheel Lug Nuts 1/2-20 Black 20+1pc Set — 1.38" Length, 60° Conical Seat

These lug nuts are designed as direct-fit aftermarket replacements for vehicles that use 1/2"-20 spline or acorn-style lug nuts. Finished in black for a clean, low-profile look, the set includes 20 lug nuts plus one keyed socket to remove and install the spline pattern. The hardware measures 1.38" overall length with a 60-degree conical seat, and uses a 3/4" (19mm) hex for manual tightening of hubcaps when required.

Will these lug nuts fit my vehicle?

They fit wheels that require a 1/2"-20 (1/2 x 20) thread pitch and a 60-degree conical seat. Many Ford (F-150, Mustang, Explorer), Jeep (Wrangler, Grand Cherokee, Liberty), and Dodge models (Dakota, Durango) use this specification, but confirm against your OEM parts first.

• Thread size: 1/2"-20 (1/2 x 20)
• Overall length: 1.38" (35 mm)
• Seat type: 60-degree coned (acorn-style)
• Hex size for hubcap tightening: 3/4" (19 mm)

How do I install and remove these spline lug nuts?

Installation and removal use the included spline key for the patterned head. Use the key with a hand tool; avoid electric impact tools on the keyed face to prevent damage. For hubcaps, tighten manually with the 3/4" hex as noted.

• Use the supplied lug nut key for spline head engagement
• Tighten lug nuts to your vehicle manufacturer’s torque spec
• Do not use power impact tools directly on the spline key face
• Hand-tighten hubcaps with a 3/4" wrench if present

What materials and quality controls are used?

These lug nuts are manufactured under strict quality controls and use high-grade materials to resist wear from regular road use. The black finish provides corrosion resistance and a uniform appearance, while the spline design helps protect the nut from tampering and wear.

• High-grade metal construction for strength and durability
• Black protective finish to reduce corrosion
• Spline head reduces direct wrench contact and improves security
• Quality inspected to meet common aftermarket standards

This set ships with 20 lug nuts plus one matching spline key; confirm fitment with your OE parts before installation. If you have any doubt about compatibility, compare thread pitch, seat angle, and overall length with one of your existing lug nuts.

Who is this for? These NPAUTO spline lug nuts are aimed at car owners, DIY mechanics, and professional shops that need a full replacement set for vehicles using 1/2"-20 conical-seat lug nuts—especially Ford, Jeep, and Dodge owners who want a black, low-profile appearance and a keyed spline head for added tamper resistance. They suit anyone replacing lost or damaged lug nuts, refreshing wheel hardware, or preparing a vehicle for seasonal tire changes, provided the listed specifications match the vehicle’s original equipment.