Thread Repair File - General Tools & Instruments

The General Tools & Instruments 177-1 Thread Repair File is an indispensable, professional-grade solution engineered for automotive and industrial technicians. This versatile tool effectively restores damaged external threads on fasteners and fittings, preventing costly component replacements and ensuring operational integrity in both workshop and field environments.

Key Features

• Eight-in-One Versatility: Consolidates eight common thread pitches (11, 12, 13, 14, 16, 18, 20, 24 TPI) into a single, compact tool, streamlining workflow and reducing the number of tools a technician needs to carry.
• Integrated Pitch Gauge: Features a built-in screw pitch gauge, allowing for quick and accurate identification of thread pitch on damaged studs and bolts, minimizing guesswork before commencing repairs.
• Durable High-Carbon Steel Construction: Manufactured from robust high-carbon steel with a black oxide coating, ensuring exceptional wear resistance and corrosion protection in demanding shop and field environments.
• Precision External Thread Restoration: Designed to accurately clean and reform nicked, flattened, or lightly galled external threads, preserving the original fastener fit without excessive material removal.

Applications

The 177-1 Thread Repair File is essential for professional technicians across automotive repair, heavy equipment service, and industrial maintenance. It is widely utilized for salvaging critical components by efficiently restoring threads on wheel studs, suspension and steering fasteners, engine accessory bolts, transmission and drivetrain studs, exhaust hardware, and manifold bolts. This tool is also effective for repairing threads on plumbing pipes and pipe fittings, particularly those affected by corrosion or cross-threading. It is suitable for use on steel and various non-ferrous fasteners found on passenger vehicles, light trucks, and industrial machinery that utilize UNF/UNC-type thread pitches within its specified range.

Specifications

• Length: 8-1/2 in
• Width: 7/16 in
• Height/Thickness: 7/16 in
• Material: High-carbon steel with black oxide finish
• Weight: Approx. 0.5 lb
• Thread pitches: 11, 12, 13, 14, 16, 18, 20, 24 TPI