## What is the torque on a 3 8?

SAE Grade 2

Bolt Size | TPI | Tightening Torque (ft lbs) |
---|---|---|

Plain | ||

5⁄16 | 18 | 11 |

3⁄8 | 16 | 20 |

7⁄16 | 14 | 32 |

**What size drill bit do you use for a 3/8 tap?**

Nominal Size (inches) | T P I | Tapping Drill Size |
---|---|---|

1/4 | 19 | 7/16″ |

3/8 | 19 | 14.75mm |

37/64″ | ||

1/2 | 14 | 18.25mm |

**What is the torque on a 14mm bolt?**

Metric Recommended Bolt Torque

Bolt Diameter (mm) | Recommended Torque (Nm) | |
---|---|---|

Class 8.8 | Class 10.9 | |

12 | 100 | 135 |

14 | 160 | 215 |

16 | 245 | 335 |

### How much torque can a 3/8 grade 8 bolt take?

Tightening Torque Guide for Grade 5 & 8 Hex Cap Screws

GRADE 5 | GRADE 8 | |
---|---|---|

Coarse Thread | Coarse Thread | |

1/4-20 (.250) | 2025 | 1/4-20 (.250) |

5/16-18 (.3125) | 3338 | 5/16-18 (.3125) |

3/8-16 (.375) | 4950 | 3/8-16 (.375) |

**What drill is used to tap a 3/8-16 hole?**

Most drill charts recommend a 5/16 drill for a 3/8-16 bolt.

**What size drill bit is 3 16?**

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

Metric Size | Fractional Size | |

1 mm | .0394 | 5/32 |

2 mm | .0787 | 11/64 |

3 mm | .1181 | 3/16 |

## What is the torque for a 8mm bolt?

Typical maximum recommended thightening torques for metric bolts.

Size (mm) | Typical Maximum Tightening Torque (Nm) | |
---|---|---|

Property Class | ||

M8 | 28.8 | 32.3 |

M10 | 57.3 | 64.1 |

M12 | 99.8 | 112 |

**What is the torque spec on a 8mm bolt?**

22Nm

For bolts with a 8mm Thread Diameter: 22Nm. For bolts with a 10mm Thread Diameter: 25Nm.

**How do you measure torque with a torque wrench?**

How to Measure a Torque Wrench

- Locate the number on the top of the bolt. Some torque bolts will have an accompanying nut.
- Look up the bolt’s number in the reference book.
- Spin the torque wrench’s handle to the correct number of foot pounds.
- Use the torque wrench as you would a normal ratchet.

### How much more torque do I need for my tap?

Dull taps require approximately 50% more torque. For 55% and 75% thread heights, multiply above values by .75 and 1.25 respectively. Torque values for helical flute taps are approximately 70% of those shown. Torque values for chip drive taps are approximately 60% of those shown.

**What are the dimensions of a self tapping screw?**

82° Flat Head Dimensions Self- Tapping Screws T 80˚ 82˚ H J M A N R N M G F Protrusion gage Edge of head may be rounded or flat A A Amin FLAT HEADS FOR SELF-TAPPING-Size Types

**What is the speed of tap in rpm?**

TAPPING SPEEDS RPM = 3.82 x SFM Tapping speeds are Tap Diameter for general purpose taps. Consult tap FEED (IPR) = 1 manufacturer for Pitch high geometry taps. FEED (IPM) = Feed (IPR) x Speed (RPM)