Bahco BWMSP15 ball joint extractor

The Bahco BWMSP15 ball joint extractor is a specialist socket set designed for removing damaged, broken or seized studs, bolts and socket screws in high-torque applications. The set combines a left-hand aggressive spiral profile with a special spline shape to provide enhanced gripping power on rounded or sheared fasteners. Manufactured from high-performance Ni-Cr-Mo alloy steel and finished with a zinc-phosphate blast treatment, the tool set is hardened to a range that balances wear resistance and toughness for heavy-duty workshop use.

Advantages

The left-hand spiral and spline geometry deliver strong bite and controlled extraction even on heavily damaged threads, reducing the need for drilling or weld-on extractors. Hardened Ni-Cr-Mo construction offers high strength and durability under repeated torque, while the blasted finish increases corrosion resistance. The set composition covers a broad range of common sizes so users can match the socket to the damaged fastener quickly, improving efficiency during repairs.

Suitable for

• Automotive repair and suspension work involving ball joints and seized studs
• Industrial maintenance and machinery repair where broken bolts must be extracted
• Workshop use for general high-torque fastener removal and refurbishment tasks
• Field service work requiring robust extractors that resist wear

Key specifications

• Application: removal of broken studs, bolts, socket screws and fittings in high-torque situations
• Design: aggressive left-hand spiral with special spline profile for extra gripping power
• Set contents: 15 hex drive sockets (eleven 1/2" hex drive sockets and four 5/8" hex drive sockets)
• Covers screw diameters approximately 3–14 mm
• Covers stud diameters approximately 1/8"–1/2"
• Material: high-performance Ni-Cr-Mo alloy steel
• Surface finish: blasted (zinc phosphate)
• Hardness: approximately 51–54 HRC

How to use

Select the socket size that most closely matches the damaged screw or stud. Attach the socket to an appropriate 1/2" or 5/8" hex drive and position it squarely over the fastener. Apply turning force in the extraction direction; the left-hand spiral and spline profile are designed to bite into rounded or fractured metal as torque is applied. If necessary, use gradual, controlled torque to allow the extractor to seat and avoid further damaging surrounding components. After removal, inspect both the extractor socket and the workpiece for wear or deformation.

Usage recommendations

Use with compatible drive tools and appropriate safety gear. For severely corroded or extremely hard fasteners, consider applying penetrating fluid and allowing time to soak before extraction. Store the sockets dry and clean to preserve the blasted finish and maintain performance.