KSP PERFORMANCE 1/2"-20 Open-End Bulge Acorn Lug Nuts 20pc — 60° Cone Seat, Triple Zinc Plated

KSP 1/2"-20 Open End Bulge Acorn Lug Nuts (20 pcs) are heavy-duty, cold-forged alloy wheel fasteners with a 60° conical seat designed to fit 1/2" x 20 studs on many Jeep and Ford models.

These lug nuts combine an open-end bulge acorn profile with a triple zinc-plated finish and proof-load testing for long-term corrosion resistance and reliable clamping. Supplied as a complete 20-piece kit with 3/4" (19mm) hex, 21mm overall height and a 22mm wide bulge, they are built for aftermarket wheels, deep center caps, and extended studs where standard closed-end nuts may not fit.

Will these lug nuts fit my vehicle and wheels?

They are specifically sized for 1/2"-20 thread studs and wheels that use a 60° cone (conical) seat. Common compatible vehicles include Jeep Grand Cherokee, Commander, Liberty, Wrangler plus many Ford models such as Crown Victoria, Mustang and Ranger. Always verify stud thread and seat angle before purchase to ensure a proper fit.

• Thread: 1/2"-20 (coarse)
• Seat angle: 60° conical
• Hex: 3/4" (19mm)
• Overall height: 21mm; bulge width: 22mm

How do these open-end bulge acorn nuts help with installation?

The open-end design accommodates extended wheel studs and deep center caps by allowing the stud to pass through the nut body, preventing interference. The bulge acorn shape guides the nut onto the seat and reduces contact damage to aftermarket rims, making hand-starting and final torquing simpler.

• Open end clears long studs and wheel adaptors
• Bulge profile centers the nut on the wheel seat
• 3/4" hex allows use with common sockets and torque wrenches
• Recommended manual torqueing to preserve threads

What materials and tests ensure durability?

KSP manufactures these lug nuts from cold-forged alloy steel and applies a triple zinc plating to resist rust and corrosion. Each nut is subjected to proof-load verification, salt-spray evaluation, and hardness checks to align with OEM-level expectations for strength and longevity under road conditions.

• Cold-forged alloy steel core for high tensile strength
• Triple zinc-plated finish for corrosion resistance
• Proof-load, salt-spray, and hardness testing completed
• Designed to withstand typical road and weather exposure

Are these lug nuts safe to use and how should I install them?

The nuts include an anti-strip internal design to reduce the chance of tool damage, but proper installation technique is essential. KSP recommends hand-starting each lug nut and finishing with a calibrated torque wrench rather than an impact gun to protect threads and ensure correct clamp force.

• Hand-start lug nuts to verify correct threading
• Use a torque wrench for final tightening; avoid impact tools
• Follow vehicle manufacturer torque specifications
• Inspect studs and wheel seats before installation

Who is this for? These KSP 1/2"-20 open end bulge acorn lug nuts are ideal for owners of Jeeps, compatible Ford models and light trucks who use aftermarket or tuner wheels with deep center caps or extended studs. They suit drivers who want a durable, corrosion-resistant fastener set with convenient open-end clearance and OEM-level testing. If you need a full 20-piece kit to cover a vehicle with lug patterns or to replace all wheel nuts at once, this set provides the correct sizing, finish and installation guidance to get you safely back on the road.