How do you measure a bolt head for a wrench?

How do you determine the wrench size of a bolt?

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 do you measure the head of a bolt socket?

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.

What size wrench is used on the head of a 1/2 bolt?

US Bolt Head/Wrench Size

Bolt Diameter Head and Wrench Size
Hex Bolt – Lag Bolt – Square Bolt Heavy Hex Bolt
1/2″ 3/4″ 7/8″
9/16″ 13/16″
5/8″ 15/16″ 1-1/16″
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What size bolt has a 22mm head?

Size Chart

Bolt size Size Tolerance
7/16″BSW 20.89
21mm 21.06
M14 22mm 22.06
1/2″UNC 7/8″ 22.28

How do I know what size nut I need for a bolt?

To measure the diameter of screws and bolts, you measure the distance from the outer thread on one side to the outer thread on the other side. This is called the major diameter and will usually be the proper size of the bolt.

What size head is on a 7/16 bolt?

Hex Bolt Head Size Chart

Diameter Head Size
7/16″ 5/8″
1/2″ 3/4″
9/16″ 13/16″
5/8″ 15/16″

How do you tell what size a socket is?

Socket set sizes

  1. The size of the drive socket (the part that attaches to the socket wrench). These are always given in imperial measurements, and will usually be either 1/4″, 3/8″, 1/2″, 3/4″ or 1″.
  2. The size of the socket head (the part that fits over or into a fastener).

How do you measure head size on a nut?

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. If you count 9 lines, the size is a 9-mm (millimeter) nut.

How much torque does a 1/2 inch bolt have?

US Recommended Bolt Torque

Size Recommended Torque
Grade 2 18-8 S/S
1/2″ 37 45
9/16″ 53 63
5/8″ 73 104

What size nut goes on a 1/2 inch bolt?

US Nut Size Table

Size Diameter*
Hex Nut Machine Screw Nut
1/2″ 3/4″
9/16″ 7/8″
5/8″ 15/16″
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Will a 12 point socket fit a 6 point nut?

Compared with the 6-point socket, a 12-point socket has twice as many points, so it can more easily slide onto a hex nut. In other words, you would need to rotate only up to 30 degrees to fit a 12-point socket onto a hex nut. … Torque power load is borne by the flanks of the nut or bolt instead of by the corners.

What size metric bolt has a 13mm head?

Metric Bolt Head/Wrench Size

Bolt Diameter (mm) Head/Wrench Size (mm)
5 8
6 10

What size is M8?

Standard metric spanner and allen key sizes.

Size Spanner Allen Key
M8 13 mm 6 mm
M10 17 mm 8 mm
M12 19 mm 10 mm
M16 24 mm 14 mm

What size metric bolt has a 10mm head?

The standard 6mm cap screw has a 10mm head.