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|
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|
- The size of a metric screw or bolt is specified as diameter, pitch and length, in millimeters (millimeters is abbreviated "mm"). For nuts, size will appear as diameter and pitch. In the example above, a pitch of 1.0 means that from one thread to the next thread, the distance is 1.0 millimeter.
- Wood Screw Diameters
Size Major Thread Diameter* Decimal Nearest Fractional Measurement #6 .138" 9/64" #7 .151" 5/32" #8 .164" 5/32"
- Those are metric screw dimensions. M10 means a 10 millimeter outer diameter for the bolt or whatever piece it is; M12 means 12 millimeters. The part after the 'x' is the pitch -- how many mm a thread is wide. To figure out which you have, you can measure the existing part with calipers and a thread gauge.
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 ) .
- Wood Screw, Sheet Metal Screw, Hex Bolt, Lag Bolt, etc. Fasteners in some categories are available with different drive types such as Philips or Slotted. In other categories such as lag bolts there is either only one drive type or the drive type is implied to be of a standard type.
- Thread count or threads per inch (TPI) is a measure of the coarseness or fineness of fabric. It is measured by counting the number of threads contained in one square inch of fabric or one square centimeter, including both the length (warp) and width (weft) threads.
- To determine filter size, measure diagonally from one corner to the opposite diagonal corner. Be sure to measure only the viewable screen area. Do not include the dimensions of the screen's frame or casing.
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.
- Most often, customers looking for a high tensile bolt may just be looking for the 8.8 grade. · S- An S grade refers to the tensile strength of industrial fasteners, or the maximum amount of stress these fasteners and fixing can withstand before they begin to break or fail.
- For example, a bolt specified as "M6-1.0 x 30" fits a 6.0-mm diameter hole. The "M" indicates that it is a metric size. Keep in mind that metric bolts are usually slightly smaller than their specified diameter. For example, a M16 bolt is often 15.97 mm in diameter.
- To Determine the Size of a Bolt. First measure the diameter. Diameter is in either Inches ( not decimal ) or Millimeter. Second measure the pitch Pitch is threads / per unit. Inches are measured threads per inches.
Updated: 25th November 2019