Thread Tapping Chart

Thread Tapping Chart — Get Every Hole Right the First Time

The Thread Tapping Chart from Allfast Solutions NZ helps you drill and tap holes accurately for any thread size. When you match the right drill bit to the correct tap, you create cleaner threads, reduce breakage, and save time on every job.

Accuracy matters in metalwork, fabrication, and repair. With this chart, you can find the correct size fast — no guessing or wasted material. Whether you’re tapping holes for bolts, screws, or studs, this chart keeps your work precise and professional.

Our Chart includes:

• Drill size recommendations for each tap size

• Metric and imperial thread data

• Fine and coarse pitch conversions

• Depth guidelines for accurate threading

• Quick-reference layout for fast results

• Tips to extend tap life and improve finish quality

Each thread tapping chart is simple to follow and clearly formatted for workshop use. You can check sizes at a glance, choose the right drill, and tap holes that fit perfectly every time. The chart suits tradespeople, engineers, and machinists who value speed and precision.

At Allfast Solutions NZ, we supply the fasteners and the information that help you work smarter. Our goal is to give you practical tools and charts that remove the guesswork from every fastening job.

For more technical detail on thread tolerances and standard sizing, visit the International Organization for Standardization (ISO). This resource outlines the official standards used worldwide for thread dimensions and tolerances.

In summary, the Thread Tapping Chart is your go-to guide for perfect threads — faster drilling, cleaner cuts, and stronger fits on every project.