Set estrattori per viti e bulloni ks tools 15 pezzi modello 150.1385 — estrattori a spirale per elementi di fissaggio danneggiati

The 15-piece Screw and Bolt Extractor Set ks tools 15-piece model 150.1385 — spiral extractors for damaged fasteners is a workshop tool kit designed to remove damaged, rounded or seized screws and bolts. The set contains a range of spiral extractors that bite into the damaged fastener so it can be turned out without enlarging the hole or causing additional damage to surrounding material. It is intended for use in automotive repair, machinery maintenance and general workshop situations where standard screwdrivers or pliers cannot gain purchase on the fastener.

Advantages

The spiral design of each extractor provides a secure grip in a damaged screw or bolt by cutting into the metal as torque is applied, reducing the need for heat or drilling out the fastener. A 15-piece range covers common screw and bolt sizes so you can select an appropriate extractor for different diameters. The set is compact for storage and transport and enables controlled removal without enlarging mounting holes or damaging adjacent components when used correctly.

Suitable for

• Removing rounded or corroded screws and bolts in automotive repair
• Extracting broken fasteners from machinery and equipment
• Workshop maintenance where standard tools cannot remove damaged fasteners
• Industrial and home repair tasks involving seized or stripped screws

Key specifications

• Quantity: 15 spiral extractors covering a range of small to larger fastener sizes
• Extractor type: left-hand spiral/spiral flute design for biting into damaged metal
• Material: hardened tool steel suitable for cutting into damaged fastener threads
• Finish: durable surface treatment for corrosion resistance and extended service life
• Storage: compact case or holder for organized transport and storage

How to use

Select an extractor that best fits the damaged fastener. Securely clamp the workpiece if possible. If necessary, create a pilot center using a drill to provide a starting point for the extractor, then insert the spiral extractor into the fastener head. Apply steady, controlled counter-clockwise torque with an appropriate T-handle, wrench or tap extractor tool to allow the spiral to bite and turn the fastener out. Avoid excessive force that could break the extractor; change to a larger extractor size if the initial tool does not engage properly.

Recommendations

Use appropriate personal protective equipment, clamp the workpiece, and proceed with steady torque. If a broken extractor becomes stuck, stop and assess whether additional drilling or professional assistance is required to avoid damage to the workpiece.