Quick Answer: What Are Standard Bolt Sizes?

How can you tell if a bolt is metric or standard?

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 do bolt sizes mean?

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.

What are the wrench sizes in order?

Wrenches: Standard Combination Wrenches (1/4, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1) Metric Combination Wrenches (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19) Standard Flare Nut Wrenches (3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 7/8) Note: Each wrench may combine two sizes.

Is m10 same as 10mm?

The M8 will measure about 8 mm in diameter, more likely, just a touch undersize, (. 31496″) The M10, about 10 mm in diameter, (. 3937″) and the M12 about 12 mm in diameter, (. … In this example the bolt is 10 mm in diameter, 40 mm long, and the threads are 1.25 mm apart.

What is the most common wrench size?

Most common are the 1/4-inch, 3/8-inch and ½-inch ratchet drivers, but ¾-inch and 1-inch sets are available for heavy-duty work.

What is standard socket size?

Therefore, it’s important to choose the precise socket size that fits the particular fastener. There are four common socket sizes: 1/4 inch (0.6 centimeters), 3/8 inch (0.9 centimeters), 1/2 inch (1.3 centimeters) and 3/4 inch (1.9 centimeters).

What size bolt does a 1/2 inch wrench fit?

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 6mm bolt?

Metric Shoulder Bolt DimensionsShoulder Diameter (A)Thread (C)Thread Length (D)6mm5mm x 0.89.75mm8mm6mm x 1.011.25mm10mm8mm x 1.2513.25mm12mm10mm x 1.516.4mm3 more rows

What are the four socket drive sizes?

These drive fittings come in four common sizes: ​1⁄4 inch, ​3⁄8 inch, ​1⁄2 inch, and ​3⁄4 inch (referred to as “drives”, as in “​3⁄8 drive”).

What are the most common bolt sizes?

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.

How do I know what size nut to buy?

Place the end of a measuring tape on one of the flat sides of the nut’s outer perimeter. Stretch the tape measure across the nut’s diameter to the flat-side directly across from the one your pulling from. If the nut is metric, count the number of lines on the tape measure to find the measurement.

What’s the next size smaller than a 9/16 wrench?

Wrench Size Chart for BoltsBolt DiameterWrench Size (Standard)Wrench Size (Metric)7/16″5/8″16mm1/2″3/4″19mm9/16″13/16″21mm5/8″15/16″24mm20 more rows•May 29, 2020

Should I buy SAE or metric?

Some trucks used the metric system of fasteners while some cars used both metric and SAE fasteners. … If you are passionate about imported cars or just to prefer them to work on, then metric tools give you real pleasure. So, you don’t need to buy SAE tools to accomplish your most jobs.

How do wrench sizes work?

Multiply the first number which is the bolt size in inches or millimeters, by 1.5 using a pocket calculator, if necessary. For example, for the numbers in Step 1, 1/2 x 1.5 = . 75 or 3/4, which is the wrench size needed for this standard-sized bolt.

How are standard bolts measured?

As a general rule, the length of fasteners is measured from the surface of the material, to the end of the fastener. For fasteners where the head usually sits above the surface such as hex bolts and pan head screws, the measurement is from directly under the head to the end of the fastener.

Is 3/8 and 10mm the same?

It’s the same size. 3/8 is in inch and and its 10mm.