Hi-Spec 39pc Metric Tap and Die Set M3-M12 with Wrench and Gauge | Repair Worn Threads, Cut Clean New Threads

• 39pc Complete Metric Tap and Die Set: For DIY garage and workshop tapping and threading. Start thread milling, internal or external rethreading, cut new material, chase damaged and old screws, repair rusty nuts, bolts and spark plugs
• Screw Threading and Tapping: 8 Metric sizes from M3 to M12 with 16 pitch sizes plus NPT (1/8-27); coarse and fine sizes and pitches; three and four flute tapered and plugged taps and dies
• Metal Tapper and Threader Kit: For steel, cast iron, aluminum, brass, and bronze; made from high-carbon chromium-bearing GCr15 steel for hardness, wear resistance, and corrosion protection
• Tap and Die Wrench Handles: Large and precision sized adjustable T-handle tap wrenches; a large die wrench handle for holding the various dies; with knurled non-slip turning grips
• Screw Pitch Gauge and Screwdriver Accessories: Measure threads accurately with the 16-blade gauge for SAE (13 to 40 TPI) and Metric (0.5 to 1.75) sizes; a handy mini screwdriver fixes in taps and dies

• Select the Correct Tap and Die — Identify the thread size needed (M3-M12 metric). Use the pitch gauge to measure existing threads or determine the required size. Select the corresponding tap and die from the set. For taps, ensure it's a tapered tap for starting a new thread.
• Prepare the Workpiece and Tools — Apply cutting fluid or oil to the tap and die, and the workpiece material. Secure the workpiece firmly. Insert the tap into the T-handle tap wrench or the die into the die wrench, ensuring they are seated correctly and securely.
• Cut the Threads — For tapping, insert the tap into the hole and turn the wrench clockwise, applying steady pressure. Back off slightly every half-turn to clear chips. For dies, align with the bolt or rod and turn clockwise, applying steady pressure to cut the external thread.
• Clean and Inspect — Once the thread is cut or repaired, clean the workpiece and the tools thoroughly. Inspect the new or repaired threads for accuracy and smoothness. Store the set back in its organized case to protect the tools.

Typical situations where Hi-Spec 39pc Metric Tap and Die Set M3-M12 with Wrench and Gauge | Repair Worn Threads helps — illustrative scenarios, not customer reviews.