What size drill bit do I use for a 3/8 tap?
US Tap and Drill Bit Size Table
| Tap | Fractional Drill Bit | Letter Drill Bit |
|---|---|---|
| 5/16″-18 | 17/64″ | F |
| 5/16″-24 | – | I |
| 3/8″-16 | 5/16″ | – |
| 3/8″-24 | 21/64″ | Q |
What is the tap drill size for a 3/8 24 UNF thread?
Tap, Drill, & Clearance Hole Sizes Chart
| Thread Size | Tap-Drill Sizes | |
|---|---|---|
| Size | DIA | |
| 3/8-24-UNF | ‘Q’ | .3320 |
| 7/16-14-UNC | ‘U’ | .3680 |
| 7/16-20-UNF | 25/64 | .3906 |
What size is a number 3 drill bit?
| To Tap This Size Screw Or Bolt: | Use This Drill Bit: | (Closest Fractional:) |
|---|---|---|
| 1/4-28 NF | #3 | 7/32″ |
| 1/4-32 NEF | 7/32″ | 7/32″ |
| 1/4-40 NS | #1 | – |
| 7mm-1.00mm | 6.1mm | 15/64″ |
What is the drill size before tapping for ¼ 20 Unc?
Thread-Forming Taps For example, the recommended drill size for a 1/4-20 UNC thread is a No. 1 (0.228″-dia.)
What size is a number 7 drill?
0.2010 inches
A number 7 drill bit is 0.2010 inches. As a fraction, the 0.2010 decimal is 201/1000.
What size drill do you use for tap?
Drill Bits and reamers. The two most common methods of creating starter holes for taps are drilling with just a drill bit or drilling with both a bit and reamer.
What are the standard drill sizes?
Range 1 (R1) is shortest in length, more common for sizing production tubing or casing, and ranges from 18 to 22 ft. Range 2 (R2) is considered the standard length for drill pipe and ranges from 27 to 31 ft. Range 3 (R3) is common in casing and also deployed in deep water drilling applications.
What size hole to drill for tap?
Drill the tap hole: The size of the drill bit to be used is dependent on the type of spile you are using. Most spiles require either a 7/16 or 5/16 bit. Drill a hole 2 to 2 ½ inches deep.
What size drill for tap?
Drill Bit Sizes (Metric) The drill size chart contains tools up to 1.5 inches in diameter,but larger tools are also commonly used.
