Screw Extractor Set RENNSTEIG 8 pcs for screws M3–M45

RENNSTEIG Screw Extractor Set, 8 pieces, is a professional tool set designed to remove damaged, rusted or seized screws and bolts with metric thread sizes from M3 to M45. The set provides a selection of extractors sized to match small to large fasteners commonly found in machinery, automotive components and metal assemblies. Each extractor features a geometry optimized for biting into stripped heads and broken studs to allow controlled extraction using standard drill chucks or tap wrenches.

Advantages

The set covers a wide range of metric thread diameters, reducing the need to purchase individual extractors. Hardened construction ensures durability and resistance to wear when applied to corroded or seized fasteners. The extractors are compatible with common workshop tools and provide reliable engagement with damaged screw heads and studs for efficient removal. Compact set format allows easy storage and transport for maintenance and repair tasks.

Suitable for

• Removal of stripped or damaged machine screws and bolts
• Automotive repair and component servicing
• Workshop maintenance and metal assembly disassembly
• Repair of seized fasteners in industrial equipment

Key specifications

• Number of pieces: 8 extractors
• Applicable metric thread size range: M3 to M45
• Material and heat treatment: hardened tool steel for wear resistance
• Design: left-hand/conical cutting geometry for gripping damaged heads and studs
• Compatibility: usable with tap wrenches, adjustable wrenches and drill chucks

How to use

Select the extractor that corresponds to the diameter range of the damaged screw or bolt. If necessary, drill a pilot hole into the center of the damaged fastener to the recommended diameter for the extractor being used. Mount the extractor in a tap wrench or drill chuck with slow reverse rotation and apply steady torque to allow the extractor’s cutting flutes to bite into the damaged material. Continue turning until the extractor has gripped and the fastener can be backed out. If resistance is high, apply penetrating lubricant and repeat the procedure with controlled force to avoid breakage.

Usage recommendations

Use appropriate personal protective equipment and clamp workpieces securely. Start with minimal force and increase gradually; avoid excessive torque that can break the extractor. For rusted or corroded fasteners, apply penetrating oil and allow time to work before attempting extraction. Match extractor size to fastener diameter and, if required, drill an accurately centered pilot hole to improve engagement.