M12 signifies that the shank is 12 mm diameter. The length will vary.
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Another tip: The A/F size of a standard M12 bolt or nut is 19mm, so close to 3/4" that the latter spanner will work - but be aware that this is the only co-incidence between metric and inch-based fastenings; and the M-series proportions don't follow a very consistent path!
The M12 Bolt has the following measurement in millimeters; Hole is 12 millimeters, Embodiment depth is 60 millimeters, Fixture clearance hole is 14 millimeters, Center spacing is 140 millimeters, and Edge distance is 100 millimeters.
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What ARE you on about?
An ISO-Metric ('M'-series), M12 bolt has a shank and thread outside diameter of 12mm - the number after the 'M' in this range is the diameter.
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Simple as that. Oh, and an M12 standard hexagon takes a 19mm A/F spanner or socket.
There are 10 millimeters per centimeter.
1 dekameter = 10 000 millimeters
6.98 centimeters=69.8 millimeters
22 millimeters=2.2 centimeters
8 centimeters 7 millimeters is the same as 87 millimeters. Since there are 10 millimeters in a centimeter, 8 centimeters is the same as 80 millimeters.
18mm
8mm
M12 x 1.25 x 40
Not sure about the hole but the stud size is M12 X 1.25
size is M12 x 1,5 dont know the length of the bolt though
no
The bolt pattern is 5x114.3, meaning that there are five bolts with a circumference of 114.3 millimeters.
4.4 millimeters = 4.4 millimeters.
http://www.gmpartseast.com/pontiac/components/2002-grand-am_suspension-front-mn060600106-ld9mn52nw69.html or search the google "M12 X 1.75 X 35 10.9" it's size: M12 Thread: 1.75 Length: 35 Steel strength class: 10.9
20 millimeters
Exactly three millimeters.
Find a gunsmith.