CTA Tools 8230 Thread Restoring File Set – 4 Piece is designed to restore damaged threads on bolts and shafts. Files are crosscut and depth proportional to the thread pitch, so they will not skip or jump out of fine pitches. All 4 files are 7/16-Inch square by 8-3/8-Inch long. The file types and pitch sizes are as follows: (number:8231) Metric 0.75, 1.00, 1.25, 1.50, 1.75, 2.00, 2.50, 3.00-millimeters; (number:8233) SAE 11, 12, 13, 14, 16, 18, 20, 24 TPI (threads per-Inch); (number:8235) SAE 9, 10, 12, 16, 20, 27, 28, 32 TPI. The set also includes a single blade file (number:8237) that can renew all 60-Degree threads, including metric. Heavy-duty construction allows for strength and durability. Whether tuning up your ‘68 Corvette or changing the oil on a John Deere tractor, CTA can supply you with the tools needed to do the job.

Product Features

• Restores Damaged Threads on Bolts and Shafts
• Files are Crosscut and Depth Proportional to the Thread Pitch to Avoid Skipping or Jumping out of Fine Pitches
• Set Includes Both SAE and Metric Files
• All 4 Files are 7/16-Inch Square by 8-3/8-Inch Long
• Heavy-Duty Construction Allows for Strength and Durability