Tap Drill Size Guide for Machine Tapping
Tap Drill Size Guide for Machine Tapping
The correct tap drill size balances thread engagement, torque, chip space and hole quality.
Taps for professional work
Cutting Tools Outlet organizes this selection by tool type, size, material and application so machinists, fabricators, maintenance teams, contractors and purchasing departments can reach the right configuration faster.
- Identify the thread standard, diameter and pitch first.
- Use the recommended tap drill rather than guessing from the finished thread size.
- Allow for material, blind-hole depth and the specific tap geometry.
Related tool types: Taps.
Material coverage: Steel Cutting Tools.
Common applications: Threading Tools.
Shop related collections
- Taps & Dies for Metal Threading
- Taps & Dies for Professional Work
- Twist Drill Bits for Metal
- Champion Cutting Tools
- Steel Cutting Tools Tools for Metal Drilling Tools & Drill Bits
- Threading Tools for Metal
Recommended products
- Carbon Hand Taps
- Champion 06541 iPAC 6-32 Tap & #36 Drill Combo
- Champion 06542 iPAC 8-32 Tap & #29 Drill Combo
- Champion 06543 iPAC 10-24 Tap & #25 Drill Combo
- Champion 06544 iPAC 10-32 Tap & #21 Drill Combo
- Champion 06545 iPAC 12-24 Tap & #16 Drill Combo
- Champion 06546 iPAC 1/4-20 Tap & #7 Drill Combo
Related buying resources
Need help choosing a size, thread, shank or replacement part? Request a quote from Cutting Tools Outlet.