What does M8 on a bolt mean?

The defined diameter of metric bolts is actually slightly larger than the actual diameter of the bolt shaft. So an M8 bolt would have a shaft diameter that’s slightly under 8mm which means that the bolt should fit through an 8mm hole.

What does M8 mean?

M8 means “Mate.” M8 uses the number 8 to replace the letters “ate.” Here are some other terms that make use of this efficiency: D8 (Date)

What does M mean on a bolt head?

Fortunately, metric bolts are marked differently than SAE bolts. An ISO metric bolt larger than 6 mm in diameter has either “ISO M” or “M” embossed on top of the head. … The number has nothing to do with the size, but does indicate the relative strength of the bolt. The higher the number, the stronger the bolt.

What size is an M8 bolt in inches?

Table 3.

Metric Closest Inch
M8-1.25 5/16-18 (Smaller)
M10-1.5 3/8-16 (Smaller)
M12-1.75 1/2-13 (Larger)
M14-2.0 9/16-12 (Larger)

Are M8 and 5/16 the same?

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!

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What bolt size is M8?

Metric clearance and tapping drill hole sizes.

Size Clearance Hole mm Tapping Drill (fine pitch)
M6 6.5 5.25 mm
M8 9 7 mm
M10 11 9.0 or 8.75 mm
M12 14 10.5 mm

Is M8 a 10mm?

M8 (8mm) Thread Size (T) 5.4mm Head Length (H) DIN 933 Manufacturing Standard. 10mm Length (L)

What does 9.8 stamped on the head of a bolt mean?

Higher Number Means Stronger

Bolts of ISO class 8.8 and the slightly stronger class 9.8 roughly correspond to an SAE Grade 5 bolt. An ISO Class 10.9 bolt roughly corresponds to an SAE Grade 8 bolt.

What does 48 on a bolt mean?

For instance, a UTS bolt labelled #3-48 is a gauge 3 bolts or screw with 48 threads per inch, and a 1/4-20 screw has a 1/4 inch diameter and 20 threads per inch.

Is a Grade 5 bolt stronger than a Grade 8?

Grade 8 bolts have been hardened more than grade 5 bolts. Thus they are stronger and are used in demanding applications such as automotive suspensions.

Is an M8 bolt 8mm wide?

But, to answer your Q – an M8 bolt will fit in an 8mm hole. There is clearance.

What’s bigger 5/16 or 8mm?

8mm = 5/16 inch.

What size drill bit do you need for a M8 anchor bolt?

Answer: Hi, The M8 Rawlbolt requires a 14mm drill bit for installation.

What does a #8 screw mean?

Their size is described as diameter, number of threads per inch (if used with a nut or in a threaded hole), and length in inches. … In all cases, the larger the number, the larger the size. Consequently a #8 screw is larger than a #4 screw, just as a 3 inch bolt is larger than a 2 inch bolt.

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What does M8 1.25 mean?

For metric fasteners, you will see a M8 x 1.25 or an M8 x 1. For thread pitch, the distance between two points is the second number meaning the higher the number the fewer threads there are. This means the M8 x 1.25 is the coarse threading and the M8 x 1 is the fine thread.