# Question: What Is M In Bolt Size?

## What size is a 10 24 bolt?

The first definition is about the size of the screw.

For a 10-24 screw this is 0.19 of an inch as the major diameter and 0.1379 as the minor diameter..

## Which is bigger m6 or m8?

The size of a metric screw or bolt is specified as diameter, pitch and length, in millimeters (millimeters is abbreviated “mm”)….Table 3.MetricClosest InchM6-1.01/4-28 (Larger)M7-1.01/4-28 (Smaller)M8-1.255/16-18 (Smaller)M10-1.53/8-16 (Smaller)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 bolt takes a 15mm wrench?

The standard wrenches needed are: 11,13,15,17,19,22,24,27,30,32,36mm. I believe that the bold that goes with the 15mm wrench is normally an M8. M8s usually use 12 or 13mm heads. Your list of wrenches may be true for whatever you work on, but the reality is that you need most sizes.

## 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 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.

## Is m6 the same as #6?

M6 Threads M6 refers to a metric 6 mm screw. The outside diameter of the threads is 6 mm. The standard metric rack screw is actually an M6 x 0.1 mm. The number 0.1 mm refers to 0.1 threads per millimeter.

## What spanner size is m8?

13mmMetric Spanner SizesNominal SizeSpanner SizeM610mmM711mmM813mmM1017mm14 more rows

## What is the most common bolt size?

If you can go imperial, 1/4-20 is going to be the most common fastener. M4 – M5 – M8 – M10 – M12 – (M14) – M16.

## What does the M stand for in m12 bolt?

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. … In this example the bolt is 10 mm in diameter, 40 mm long, and the threads are 1.25 mm apart.

## 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 size bolt has a 1/2 head?

US Bolt Head/Wrench SizeBolt DiameterHead and Wrench SizeHex Bolt – Lag Bolt – Square BoltHeavy Hex Bolt5/16″1/2″-3/8″9/16″-7/16″5/8″-13 more rows

## What size is a 8.8 Bolt?

Bolt Grade Markings and Strength ChartGrade and MaterialNominal Size Range (inches)Class 8.8 Medium carbon steel, quenched and tempered16mm – 72mmClass 10.9 Alloy steel, quenched and tempered5mm – 100mmClass 12.9 Alloy steel, quenched and tempered1.6mm – 100mm19 more rows

## What do the markings on the head of a bolt mean?

The lines on the head of a bolt indicate its grade. SAE J429 (Society of Automotive Engineers) bolts have radial lines, whereas ASTM (American Society for Testing and Materials) uses a combination of letters and numbers to indicate the grade.

## What are standard bolt sizes?

Typically, machine bolt sizes range from 1/4″ to 1 1/4″ for square heads and 3/8″ to 1 3/4″ in diameter for hex heads, and lengths span from about 3/4″ to 18″ for square and 6 1/2″ to 24″ for hex heads. Measure length from under the head to the threaded end of the bolt.

## What size Bolt uses a 18mm socket?

Size ChartBolt sizeSizeTolerance18mm18.403/8″BSW18.43M1219mm19.461/2″UNF3/4″19.5137 more rows

## What size bolt has an 8mm head?

Metric Shoulder Bolt DimensionsShoulder Diameter (A)Thread (C)Head Diameter (E)6mm5mm x 0.810mm8mm6mm x 1.013mm10mm8mm x 1.2516mm12mm10mm x 1.518mm3 more rows

## What size is m8?

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