CTA Tools Ball Joint Hammer Nut Kit — 4-Size Metric Set (M12/M14/M16) for Impact Hammers, Protects Knuckles

CTA Tools 7395 Ball Joint Hammer Nut Kit is a four-size impact hammer nut set that separates ball joints, steering knuckles and strut assemblies and can remove wheel studs. The 7395 kit includes four threaded hammer nuts sized to fit common European and Japanese vehicles, letting technicians and DIYers apply targeted impact force without damaging suspension components. Designed for use with an impact hammer, each nut threads onto the knuckle or joint stud and transmits the blow to break tight or rusted connections. The set covers M12 (two pitches), M14, and M16 thread sizes used on Mercedes, BMW, Honda, Toyota, Lexus, Subaru and other makes.

How does this kit separate ball joints and knuckles?

Thread the correct-sized nut onto the exposed stud of the ball joint, steering knuckle, or strut assembly and strike the nut with an impact hammer. The nut concentrates the percussion directly at the joint, forcing the stud free without using pry bars that can harm surrounding parts.

• Threads onto studs to deliver direct impact force
• Works with standard impact hammers
• Minimizes prying and potential knuckle damage

Which vehicles and thread sizes are included?

The kit covers the most common metric thread sizes found on European and Japanese suspension components. Select the appropriate thread pitch before use to ensure safe, secure engagement with the stud.

• M12 x 1.25 — common on Honda and Subaru
• M12 x 1.5 — used on some Mercedes and Toyota models
• M14 x 1.5 — fits BMW, Mercedes and certain Toyotas
• M16 x 1.5 — used on larger Mercedes and Toyota studs

Can this kit remove wheel studs as well?

Yes — by threading the correct nut onto a stuck wheel stud, an impact strike will drive the stud out of the hub. This provides a controlled, straightforward method for wheel stud replacement without resorting to hammering around the hub face.

• Threads engage the stud for direct extraction
• Reduces risk of hub face marring compared with freehand hammering
• Useful for both removal and preparing for stud replacement

What precautions and best practices should I follow?

Always match the nut pitch to the stud before threading to avoid cross-threading or stud damage. Use proper eye and hand protection, position the vehicle securely on jack stands, and strike the nut with measured force from a suitable impact hammer.

• Verify thread size and pitch before use
• Secure vehicle and wear personal protective equipment
• Apply controlled impact blows; avoid excessive force

Who is this for: The CTA Tools 7395 Ball Joint Hammer Nut Kit is aimed at professional mechanics, restoration shops, and experienced DIY enthusiasts who service European and Japanese cars. It suits anyone who needs a compact, durable solution to break stubborn ball joints, steering knuckles, strut assemblies, or extract wheel studs without specialized hydraulic presses. If you frequently work on Mercedes, BMW, Honda, Toyota, Lexus or Subaru models, this kit provides the thread sizes you’ll most often encounter and gives a safer, more repeatable alternative to makeshift striking techniques.

FAQ

Q: Will these nuts fit my vehicle's ball joint studs?

A: Match your stud thread diameter and pitch to the kit sizes (M12×1.25, M12×1.5, M14×1.5, M16×1.5) to ensure correct fit.

Q: Can I use these with a standard hammer instead of an impact hammer?

A: They're designed for impact hammers; using a standard hammer risks damaging the nut or stud and is not recommended.