If you have ever looked a metric hex bolt you might notice the markings 8.8, 10.9 or 12.9 this does not mean grade 8,10 or 12. The grade 8.8 refers to the tensile strength which is generally 116,000 psi, grade 10.9 is generally 150,000 and grade 12.9 is generally 175,000 psi.
In respect to this, what size is a m8 screw?
|Tap size||Basic major dia (mm)||Basic major dia (inch)|
|M6 x 1||6mm||.2362|
|M8 x 1.25||8mm||.3150|
|M8 x 1||8mm||.3150|
|M10 x 1.5||10mm||.3937|
What is a m8 bolt in inches?
Inch Threads vs. Metric Threads
|Inch Bolts||Metric Nuts|
|5/16″-18||M8 x 1.0|
|3/8″-16||M10 x 1.5|
|7/16″-14||M12 x 1.75|
|1/2″-13||M14 x 2|
How do you measure the size of a bolt?
Diameter is in either Inches ( not decimal ) or Millimeter. Second measure the pitch Pitch is threads / per unit. Inches are measured threads per inches. Third measure length Length is measured from behind the head to end, ( except for flathead is measured total length ) .