KUNGJUER 3Pcs Thread File Set – Metric & SAE Rethread Files for Precision Thread Repair

Overview

Meet the KUNGJUER 3Pcs Thread File Set, a compact, durable solution designed to restore damaged external threads on bolts, screws, studs, and pipes. Crafted from high-carbon steel and finished with a black oxide coating, these files are built to maintain precision through multiple repairs in demanding environments.

What’s inside and how it helps

The trio provides a wide range of metric and SAE rethread options. Metric files span 0.75 mm to 3.00 mm, while SAE UNF and UNC files cover common increments, increasing your chances of matching the correct thread profile without guesswork. This versatility makes the set suitable for a broad spectrum of repairs in both workshops and field settings.

• Metric sizes: 0.75 mm, 1.00 mm, 1.25 mm, 1.50 mm, 1.75 mm, 2.00 mm, 2.50 mm, 3.00 mm
• SAE UNF sizes: 9, 10, 12, 16, 20, 27, 28, 32
• SAE UNC sizes: 11, 12, 13, 14, 16, 18, 20, 24

Construction and reliability

Crafted from high-carbon steel and finished with black oxide, the tools are heat-treated to preserve sharpness and accuracy after repeated use. The result is a dependable set that tolerates regular repairs in shop or field settings.

Safety and ergonomics

The design includes a removable handle and protective end caps, which help prevent slips and injuries while providing a comfortable, controlled grip during threading work.

Where you’ll use them

Ideal for professional mechanics, industrial maintenance, engine work, chassis installations, piping systems, and electrical equipment setups. Use this set in a workshop or on-site to address thread damage with precision and ease.

Why choose KUNGJUER

With a heat-treated carbon steel core and a precise finish, these files resist wear and maintain effective cutting action. The removable handle allows for a comfortable grip during longer repair sessions, while end caps protect your fingers in tight spaces.

Care and maintenance

Wipe clean after use and store in a designated case. The black oxide finish helps resist rust in humid environments, though routine cleaning extends life. Avoid prolonged soaking in water.

Tips for best results

• Choose the appropriate size range to match the damaged thread.
• Apply light, steady strokes to avoid removing more material than needed.
• Inspect threads before filing to prevent over-enlarging threads.
• Wear eye protection and follow standard safety practices during repairs.