Wiha set estrai-viti 03988, 5 pezzi, M3-M18, scanalature a spirale sinistrorse, attacco quadro

Removing broken, stripped, or seized screws, bolts, and studs is a common frustration in repair and maintenance work. The Wiha Screw Extractor Set 03988 provides a reliable solution with five high-quality extractors designed to grip and remove damaged fasteners efficiently.

Who is it for

This set is ideal for professional mechanics, machinists, maintenance technicians, and serious DIYers who encounter broken fasteners and need a dependable extraction tool.

Main features

• Five extractors cover metric sizes M3 to M18 and imperial sizes 1/8" to 3/4".
• Left-hand spiral flutes bite into the fastener as you turn counter-clockwise, ensuring a secure grip.
• Made from high-quality hardened tool steel for strength and durability.
• Square drive allows use with a tap wrench, socket, or adjustable wrench.
• Blackened finish provides corrosion resistance.
• Supplied in a durable plastic storage box for organization and protection.

Specifications

• Set Type: Screw Extractor Set
• Number of Pieces: 5
• Extractor Sizes (Metric): M3 - M18
• Extractor Sizes (Imperial): 1/8" - 3/4"
• Extractor Design: Left-hand spiral flutes
• Material: High-quality hardened tool steel
• Drive Type: Square drive
• Recommended Pilot Drill Sizes: 2.0 mm, 3.0 mm, 4.0 mm, 6.0 mm, 8.0 mm
• Corrosion Resistance: Blackened finish
• Extractor Size 1: For M3-M6 screws (1/8"-1/4")
• Extractor Size 2: For M6-M8 screws (1/4"-5/16")
• Extractor Size 3: For M8-M11 screws (5/16"-7/16")
• Extractor Size 4: For M11-M14 screws (7/16"-9/16")
• Extractor Size 5: For M14-M18 screws (9/16"-3/4")

Tips

Before using an extractor, drill a pilot hole in the center of the broken fastener using the recommended drill size. Then insert the extractor and turn it counter-clockwise with a wrench. Apply steady pressure and avoid excessive force to prevent breaking the extractor.