What are metric tap sizes?
What are metric tap sizes?
Metric Tap and Drill Bit Size Table
| Tap | Metric Drill | US Drill |
|---|---|---|
| 5mm x 0.8 | 4.3mm | – |
| 6mm x 1.0 | 5.2mm | – |
| 7mm x 1.0 | 6.1mm | 15/64″ |
| 8mm x 1.25 | 6.9mm | 17/64″ |
How do you calculate metric tap drill size?
As a rule of thumb, for Metric threads, the tapping drill can be calculated by subtracting the pitch from the diameter of the thread. eg for an M5x0. 75 thread the tapping drill is 5-0.75mm = 4.25mm. For Imperial (inch) threads the tapping drill size is calculated in the same way, diameter minus pitch.
What is the tapping drill size for M3?
2.5
Metric Threads
| Thread | Drill size for tapping standard metric threads | Clearance hole |
|---|---|---|
| M3 | 2.5 | 3.4 |
| M3.5 | 2.9 | 3.9 |
| M4 | 3.3 | 4.5 |
| M5 | 4.2 | 5.5 |
What does M12x1 75 mean?
thread
M12x1. 75 is the metric way to indicate a thread. M12 means that the OD thread is 12mm, the 1.75 is the step of the thread.
What is the tap drill size for a 3/4 10 UNC 2b?
Tap, Drill, & Clearance Hole Sizes Chart
| Thread Size | Tap-Drill Sizes | |
|---|---|---|
| Size | DIA | |
| 5/8-18-UNF | 37/64 | .5781 |
| 3/4-10-UNC | 21/32 | .6562 |
| 3/4-16-UNF | 11/16 | .6875 |
How do you know what size tap to use?
To determine the proper drill size for 75% thread on a special pitch tap use the following formula: [Major Diameter of tap, in inches] – (. 975 divided by the number of Threads Per Inch) = Drill Size [in 1000ths of an inch.]
What is the drill size for a 5/16 18 tap?
17/64″
| To Tap This Size Screw Or Bolt: | Use This Drill Bit: | (Closest Fractional:) |
|---|---|---|
| 5/16-18 NC | Ltr.F | 17/64″ |
| 8mm-1.25mm | 6.9mm | 17/64″ |
| 5/16-24 NF | Ltr.I | – |
| 8mm-1.00mm | 7.1mm | – |
What is the drill size for a 3/8-16 tap?
Target and Range. Most drill charts recommend a 5/16 drill for a 3/8-16 bolt.
Which size of drill is used for tapping with M5 tap?
Tap Size
| Tap Size | Drill Size |
|---|---|
| M5 x 0.8 | 4.2mm |
| M5 x 0.9 | 4.2mm |
| M6 x 1 | 5mm |
| M6.3 x 1 | 5.5mm |