# Metric Bolt Hole Sizes?

When using bolts that are measured using the metric system, a chart can be used to determine the size of the holes needed for the bolt to fit properly. There are three different types of fits: close fit, medium fit, and free fit. Each of these measurements change according to the size of the bolt. The diameter of the bolt or screw is used to find the size of the hole. For example, a screw with a diameter of 1.5 mm will have close fit in a hole that is 1.7 to 1.8 inches in diameter. The diameter of the hole for a medium fit will be between 1.8 and 1.94. For a free fit, the diameter of the hole will be between 2.0 and 2.25.
Reference:
Q&A Related to "Metric Bolt Hole Sizes?"
 1. Slide the bolt into an opening of a bolt and thread gauge. Move the bolt until it slides tightly into a gauge hole and does not move from side to side when the top of the threads http://www.ehow.com/how_8083039_size-hole-bolt.htm...
 A 7/32 socket or wrench will fit on a 5.5mm bolt, but poorly. You risk rounding off the head of the bolt if it's stuck very tight. http://wiki.answers.com/Q/What_standard_size_socke...
 Most common metric bolt sizes for Toyota are 10mm, 12mm, and http://www.chacha.com/question/what-are-the-most-c...