Asked By: Ashley Vitali | Last Updated: 17th May, 2020

Drill Bit Size Chart

Size |
Decimal Equivalent | Size |
---|---|---|

.35 mm | 0.0138 | 8.60 mm |

.36 mm | 0.0142 | R |

79 | 0.0145 | 8.70 mm |

.38 mm | 0.015 | 11/32″ |

Likewise, what size is a #29 drill bit?

To Tap This Size Screw Or Bolt: | Use This Drill Bit: | Decimal Inches |
---|---|---|

4mm-0.75mm | 3.4mm | .1338 |

8-32 NC | #29 | .1360 |

8-36 NF | #29 | .1360 |

8-40 NS | #28 | .1405 |

Subsequently, question is, what is drill size U? ^{7}⁄_{16} screw (?^{7}⁄_{16} ≈ 0.437) with 14 threads per inch (coarse) needs a tap **drill** with a diameter of about 0.371 inches. The **drill sizes** that are near this are letter **U** (0.368 in; 84.2%), 9.5 mm (0.374 in; 85.6%), and ?^{3}⁄_{8} in (0.375 in; 85.8%); any of these will work well.

Thereof, what size is a letter f drill bit?

Standard Drill Sizes – Inches

Drill Size | . | Drill Size |
---|---|---|

66 | = | F |

65 | = | G |

64 | = | 17/64 |

63 | = | H |

What size is a #60 drill bit?

Twist **Drill size 60** is . 040″ or 1.0160mm.

###
Why are there Letter drill sizes?

The numbered

**drill sizes**came from British wire gauge**sizes**. It’s my understanding that the non-uniformities came from diameter differences in the old wire drawing processes. Sort of the same deal for the**letter sizes**(but from different wire manufacturers).###
Is 12mm the same as 3 8?

8mm = 5/16 inch. 9mm = almost

**3/8**inch. 11mm = almost 7/16 inch.**12mm**= almost 15/32 inch (= almost 1/2 inch)###
How do I know what size my drill bit is?

Typical

**drill bits**have markings somewhere on the shank above the threads. It’s small, but it usually has the**drill**–**bit**diameter stamped into the metal; the number is written in fractions. For example, the markings may read: 1/4-inch, 3/6-inch or 25/32.###
What is a 6mm drill bit equivalent to?

The 15/64 is the closest

**bit**to 6 mm: 6 mm = .2362. 15/64″ = .2344.###
What size is a 6mm drill bit in inches?

Drill sizes to 1″ diameter

Drill sizes to 1″ diameter Legend Fractional Inch Letter Drill Millimeters Number Drill | ||
---|---|---|

Millimeters | Inches | Designation |

5.9436mm | .234″ | A |

5.9531mm | .234375″ | 15/64″ |

6mm | .2362″ |

###
What is a 5mm drill bit in inches?

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″ |

###
What size is a 4 mm drill bit?

Standard metric drill bit sizes

Drill size | Diameter (in) |
---|---|

3.8 mm | 0.1496 |

3.9 mm | 0.1535 |

4 mm | 0.1575 |

4.1 mm | 0.1614 |

###
What is jobber length?

Today,

**jobber**bit refers to the**length**of the drill itself. Specifically,**jobber**bits have a flute**length**between 9 and 14 times the diameter of the drill. A ½ inch diameter**jobber**drill will be able to drill a hole 4 ½ inches deep because it is 9 times the diameter in**length**, for example.###
How many MM is a 1/8 drill bit?

Drill Bit Hole Diameters | ||
---|---|---|

Metric Size | Fractional Size | |

.7 mm | .0276 | 7/64 |

.8 mm | .0315 | 1/8 |

.9 mm | .0354 | 9/64 |

###
What size hole do you drill for a 1/4 tap?

**You**can get away with a 1/8 inch

**drill for a 1/4**-20

**tap**in a pinch.

###
How many types of drill bits are there?

**Drill bits**are generally classified as Twist

**Drill**, Counterbore, Countersink, Flat Bottom Boring, and Specialty. On our web site we have divided these into two categories:

**Drill Bits**– Normally used with hand held

**drills**or

**drill**presses fitted with standard chucks.

###
What is a tap drill?

Noun.

**tap drill**(plural**tap drills**) A**drill**of the correct size to produce the hole for a specified**tap**size.###
What is a #7 drill bit?

There are three standard sets of

**drill bits**. Fractional, Number and Letter. A typical Number (or “wire gauge” )**bit**set is numbered from 1 to 60. #**7**is just barely smaller than 13/64″, but quite a**bit**bigger than 3/16″###
What size is a 5mm drill bit?

If you want a hole of 5 mm diameter, you use a 5 mm

**drill bit**. tolerances will be present, more accurate if you use a**drill**press rather than a hand**drill**. A good**drill**press will make a hole within a coupe of . 001 inches of the**drill size**, depending upon the material.###
What size is a number 10 screw?

US Machine Screw Diameters

Size | Thread Diameter | |
---|---|---|

Decimal | Nearest Fractional | |

#6 | 0.13″ | 9/64″ |

#8 | 0.16″ | 5/32″ |

#10 | 0.19″ | 3/16″ |

###
What is the best rpm for tapping?

For

**best**results, the speed of the spindle should be between 150 and 250**rpm**. Get a**tap**guide. The hole is now ready to**tap**.###
How do you measure thread size?

**How to Determine Screw Size & Thread Count**

- Lay the screw down on a flat surface.
- Place a steel rule down the axis of the screw.
- Count the number of thread gaps within 1 inch of the screw.
- Divide the count of thread gaps into the length.
- Place the screw on a flat surface.
- Lay a steel rule between two screw threads and measure across the diameter.

- 12
- 39
- 39
- 39
- 24
- 23
- 39
- 39
- 39
- 36