How Is The Size Of A Wrench Determined?

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.

What determines nut size?

Nuts are measured by

the width of the hex shape and by their thread pitch

. Bolts and nuts come in many different measurements and cannot be interchanged. Most nut and bolt measurements come in either metric sizing or standard sizing.

What do the numbers on a wrench mean?

Metric wrench sizes are expressed as

whole numbers

(e.g., 8, 10, 14, 32) that correspond to the sizes in millimetres. Non-metric sizes used widely in the U.S. are also called S.A.E (Society of Automotive Engineers) sizes and are expressed as fractions of an inch; e.g., 1/4, 1/2, 3/4, 1 1/4.

What is the standard socket wrench size?

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). In-between sizes are available too, starting with 1/4 inch (0.6 centimeters) and increasing every sixteenth of an inch (0.16 centimeters).

What is a 6 sided wrench called?

Also called

Allen wrenches

(although “Allen” actually refers to specific brand known for making hex-key wrenches), these short six-sided bars of steel are characteristically L-shaped, with one side shorter than the other.

What are the most common wrench sizes?

Most common are the

1/4-inch, 3/8-inch and 1⁄2-inch ratchet

drivers, but 3⁄4-inch and 1-inch sets are available for heavy-duty work.

What's the next size smaller than 1/2 inch?

How do I know my socket size?

1. Turn on the digital caliper and set it to read in millimeters, not inches. Set the nut on a flat surface. …
2. Close the caliper jaws until each jaw rests on one flat side of the nut.
3. Check the caliper display. The reading shown is the size of the nut as a decimal.

What is a normal wrench?

All wrenches are available in many sizes, and can be purchased individually or in sets. A small set may have six to 10 wrenches, ranging in size from perhaps five-sixteenths to one inch. Standard wrenches are sold in

sixteenth-inch increments up to one and a half inches

(and in metric sizes, too, of course).

Should you normally pull on a wrench?

Always pull

, rather than push, a wrench for greater control and balance. That way, if the nut or bolt should suddenly loosen, you're less likely to go flying. Never try to get more torque from a wrench by using a cheater bar or other device to extend the leverage.

What tool is used to tighten bolts?

wrench, also called spanner, tool, usually operated by hand, for tightening bolts and nuts.

Why do wrench sets Skip 16mm?

The reason is that

neither 16 or 18 are used at all in anything metric that I have found

. On Toyota a set NEEDS to include 10, 12, 14, 17, and 19 and if you have a later one an occasional 8. German vehicles use a lot of 11,13, and 15.

What is better 6 point or 12 point?

Answer: It's true that

12-point sockets are fine for most lightweight repairs

, but heavy wrenching calls for a six-point socket. A six-point socket is much less likely to slip off a stubborn fastener or round over the corners. Here's why: (1) Six-point sockets have thicker walls, so they're less likely to flew.

What is the most common socket drive size?

3⁄8-inch

drive size sockets are the most common and most available.

Is 4mm the same as 1/4 inch?

What size is 5/8 inch in MM?