12x1.5 Black Lug Bolts Set of 20 - 40mm Shank Locking Spline

In this review the Wheel Accessories Parts 20-piece lug bolt set is evaluated for drivers who fit aftermarket or European wheels that use bolts instead of studs. The bottom line: this set is for anyone seeking a durable, well finished M12x1.5 replacement with a 40mm shank length and a locking spline option, and the single biggest reason to buy is the combination of forged construction and rolled threads that delivers consistent fit and long lasting finish for many common applications.

Key Features

• Set size: Twenty lug bolts provide a full replacement for four to five wheels, so owners can replace all bolts at once for uniform appearance and performance.
• Thread and seat: M12x1.5 thread with a conical seat ensures compatibility with many European vehicles designed for lug bolts rather than studs and nuts.
• Shank length: The 40mm shank (thread length) is suitable for many aftermarket wheels with small diameter bolt holes while keeping the bolt engaged for secure clamping.
• Construction: Forged carbon steel bolts with rolled threads offer stronger mechanical properties and consistent quality compared with cut threads.
• Finish and tools: Dual coated black finish resists corrosion and maintains a high luster, and the included dual hex key supports the locking spline design for theft deterrence and convenience.

Who It's For

This kit is best for owners of European cars and aftermarket wheel users who specifically need M12x1.5 lug bolts with a conical seat and a 40mm shank. Mechanics, hobbyists, and shoppers replacing all bolts to match finish and fit will appreciate the forged construction and rolled threads for reliability.

Drivers who need longer shank length or who use wheels requiring studs and nuts should look elsewhere; also those who require metric sizes other than M12x1.5 or non-conical seats should verify fit before purchasing.

Pros & Cons

Pros

• Forged construction and rolled threads deliver consistent strength and thread quality for secure fastening.
• Dual coated black finish looks good on many wheels and offers corrosion resistance and a high luster.
• Set of 20 plus a dual hex key provides a complete kit for multiple wheels and includes the tool for the locking spline design.

Cons

• Some customers report the 40mm shank is too short for certain wheel and spacer combinations, so verify clearance before installing.

Specifications

Our Verdict

The Wheel Accessories Parts 20-piece M12x1.5 lug bolt set is a practical, good-value choice for owners of European and aftermarket wheels who need forged, rolled-thread bolts with a 40mm shank and a sleek black finish. It is especially worthwhile when replacing all bolts for consistent appearance, but buyers should confirm the 40mm length fits their wheel and spacer setup before ordering.

Frequently Asked Questions

Are these bolts compatible with European cars that use lug bolts?
Yes, the M12x1.5 thread and conical seat are commonly used on many European vehicles that require lug bolts rather than studs and nuts.

Will the 40mm shank work with aftermarket wheels?
It will fit many aftermarket wheels, but some wheel and spacer combos need longer shanks; measure your wheel depth and spacer thickness to confirm fit.

What makes these bolts durable?
They are forged carbon steel with rolled threads and heat treated to 10.9 grade, which improves mechanical properties and thread consistency over cut-thread bolts.