# Question: What Does M8 Mean On A Bolt?

## Does m8 mean 8mm?

All dimensions of the bolt (and nut) are a parameter of its basic diameter.

The “M8” refers to an approximation of the major diameter of the thread of 8mm – actually slightly less, like 7.9, as the sharp edges are rounded off..

## What are standard bolt sizes?

US Standard Thread Length for BoltsBolt DiameterStandard Thread Length (in.) *Bolts 6 inches and shorterBolts longer than 6 inches5/16″7/8″1-1/8″3/8″1″1-1/4″7/16″1-1/8″1-3/8″7 more rows

## Is m10 same as 10mm?

31496″) The M10, about 10 mm in diameter, (. 3937″) and the M12 about 12 mm in diameter, (. 4724″). The “M” designates the bolt is Metric and the number after the M indicates the size.

## How much force can a bolt take?

For example, a steel bolt with a rating of 5.5 will provide roughly 500 newtons/mm2 of bolt tensile strength and approximately 400 newtons/mm2 of yield strength. Other popular bolt materials, such as corrosion-resistant stainless steel, alloys, and composite materials can be rated in similar fashion.

## What is M in bolt size?

The “M” designation for metric screws indicates the nominal outer diameter of the screw thread, in millimetres (e.g., an M6 screw has a nominal outer diameter of 6 millimetres).

## What size bolt is between m8 and m10?

Thread Conversion TableMetric CoarseMetric FineUNCM8 x 1.25M8 x 15/16-18M10 x 1.5M10 x 1.253/8-16M12 x 1.75M12 x 1.251/2-13M14 x 2M14 x 1.59/16-1212 more rows

## What is the most common bolt size?

Common Sizes For someone on a tight budget, the 10, 13 and 15mm are considered a good buy, as so many cars use them. However, the 17 and 18mm do pop up on others. Many people would buy a set because the bolts you need are always the one you don’t get, and if you buy piecemeal, you pay more overall.

## What is the imperial equivalent of an m8 bolt?

Body Size MetricNearest Imperial Equivalent SizeM4-8-36M5-10-32M6-1/4-28M8-5/16-184 more rows

## What does m8 1.25 bolt 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.

## How strong is an m8 bolt?

From the table at right, for a strength class of 10.9 and a maximum allowable load of 200 kgf, the suitable bolt is a 318［kgf］M8.

## What is m10 bolt size?

Metric Hex Bolt DimensionsNOMINAL SIZE (D)BODY DIAMETERm1010.009.78m1212.0011.73m1414.0013.73m1616.0015.7313 more rows

## How do I know what size nut to buy?

If the nut is US standard, count the smallest lines on the tape measure in sixteenths. Add the sixteenths together to find the size. If you count 11 lines, the size of the nut is 11/16. You can also measure from point-to-point to find the “Whitworth system” measurement.

## How can you tell if a bolt is metric?

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.

## What are standard bolt threads?

Coarse Thread Series (UNC/UNRC) is the most common designation for general application bolts and nuts. Coarse thread is beneficial, because they are less likely to cross thread, more tolerant in adverse conditions and facilitate quick assembly. Fine Thread Series (UNF/UNRF) is commonly used in precision applications.

## What is the smallest bolt size?

The bolt pictured here is a mere 30mm in length and 10mm in diameter. It is the smallest bolt we have ever converted into a DTI SmartBolt. We manufactured these SmartBolts for a power tool manufacturer that desires a fastener with a visual indication system to secure a key component.

## What size is a m8 bolt?

Tap sizeBasic major dia (mm)Basic major dia (inch)M6 x 16mm.2362M8 x 1.258mm.3150M8 x 18mm.3150M10 x 1.510mm.393724 more rows

## How long is an m8 bolt?

Table 3.MetricClosest InchM7-1.01/4-28 (Smaller)M8-1.255/16-18 (Smaller)M10-1.53/8-16 (Smaller)M12-1.751/2-13 (Larger)16 more rows

## Are m10 and 3/8 the same?

Since 10 mm is bigger than 3/8″, the simple answer is, “NO”. But you CAN drill the hole out to either 25/64″ (for 3/8-24) or letter “X” (. 397″)( for 3/8-16), and tap for a Helicoil.

## What size is a 3/8 bolt in metric?

Fastener Conversion ChartInch EquivalentMetric Size-PitchISO and IFI Rec.1/4- 201/4- 28M6x 15/16-185/16- 24M8x 1.253/8-163/8- 24M10x 1.57/16-147/16- 20M12x 1.7513 more rows

## What is m10 Imperial?

M10 x 1.25. 3/8. 3/8-16. 3/8-24. M12 x 1.75.