How do you convert metric bolts to standard?

Elgin Fastener Group products are manufactured by the largest single-source supplier of specialty fasteners in the nation….Fastener Conversion Chart.

Inch Equivalent	Metric Size-PitchISO and IFI Rec.
10- 24	10- 32	M5x .8
1/4- 20	1/4- 28	M6x 1
5/16-18	5/16- 24	M8x 1.25
3/8-16	3/8- 24	M10x 1.5

Are M10 and 3/8 the same?

As George says the CG-5 does use the metric 10 x 1.5. That said, they are very close, the 3/8″ bolt is about 0.019″ smaller and the pitch’s are very close so the 3/8 -16 bolt will thread in the 10mm x 1.5 but the 10 x 1.5 bolt will not fit the 3/8 but..

What size is a 3/4 bolt in metric?

Table 3.

Metric	Closest Inch
M14-2.0	9/16-12 (Larger)
M16-2.0	5/8-11 (Smaller)
M18-2.5	3/4-10 (Larger)
M20-2.5	3/4-10 (Smaller)

What size is a 3/8 bolt in metric?

US to Metric Conversion Table

US (inches)	Metric (millimeters)
3/8	9.5
7/16	11
1/2	13
9/16	14

Is my screw metric or standard?

Telling the difference between a metric and imperial bolt is easy. If the bolt has lines on the head its standard or imperial. If the bolt has numbers on the head then its metric. These markings indicate how strong the bolt is they call this tensile strength.

Is 5/16 The same as M8?

Well, quick answer is no. They are not the same and they are not interchangeable, although they can work under certain circumstances. The most important part is understanding the meaning of M8 and 5/16 to refer to the size of a metric screw or bolt, so then we can see why they aren’t the same thing!