Neilsen 42pc Re-Thread Tool Kit Set - UNC/UNF & Metric

The kit includes UNC/UNF and Metric thread dies, taps, and thread files.

Sizes include: UNC/UNF Dies and Taps: 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8. Metric Dies and Taps sizes: 6 x 1.00, 8 x 1.25, 10 x 1.25, 10 x 1.50, 12 x 1.25, 12 x 1.5, 12 x 1.75mm. Thread File sizes: 11, 12, 13, 14, 15, 16, 18, 20, 24 and 9, 10, 12, 16, 20, 27, 28, 32.

Use a thread pitch gauge or measure the diameter and count the threads per inch (for UNC/UNF) or measure the pitch (for Metric) and diameter.

Thread files are used to clean and restore damaged external threads, especially on bolts and studs.

UNC (Unified National Coarse) threads have a coarser pitch, while UNF (Unified National Fine) threads have a finer pitch, both are imperial threads.

This kit is suitable for automotive repair, machinery maintenance, and general repair tasks involving threaded components.

If the damage is severe, the thread may be beyond repair. Consider using a thread insert or consulting a professional.

Use cutting oil or a similar lubricant to reduce friction and improve the cutting action.

Ensure correct thread size is used. Apply cutting oil, and proceed slowly. If binding persists, the thread may be too damaged; consider professional assistance.

Double-check the thread size and type. Ensure the mating part is also clean and free of debris. If the damage is extensive, a larger thread size may be required.

Clean tools with a wire brush or abrasive pad. Apply penetrating oil to loosen rust. Consider replacing severely corroded tools for optimal performance.