# What size are head bolts?

## What size are head bolts?

Hex Bolt, Lag Bolt, Square Bolt and Heavy Hex Bolt

US Bolts
Bolt Diameter (in) Head and Wrench Size (in)
1/2 3/4 7/8
9/16 13/16
5/8 15/16 1 1/16

## What size bolt has 13 16 Head?

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″

What size is a 3/4 head bolt?

9/16″ 13/16″
5/8″ 15/16″
3/4″ 1 1/8″
7/8″ 1 5/16″

### How do you measure bolt head size?

For fasteners where the head usually sits above the surface, the measurement is from directly under the head to the end of the fastener. For fasteners that are designed to be countersunk, the measurement is made from the point on the head where the surface of the material is, to the end of the fastener.

### What size bolt has a 19mm head?

Size Chart

Bolt size Size Tolerance
18mm 18.40
3/8″BSW 18.43
M12 19mm 19.46
1/2″UNF 3/4″ 19.51

What are M5 bolts?

An M5 metric bolt is a bolt with 5mm thread diameter and a 0.5–0.8mm thread pitch (where metric thread pitch specifies the peak-to-peak width of a single thread groove).

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

## What size head is a M8 bolt?

FLAT HEAD SOCKET CAP SCREW – METRIC

Size Head Diameter Hexagon Socket Size
M4-0.7 8.96 2.50
M5-0.8 11.20 3.00
M6-1.0 13.44 4.00
M8-1.25 17.92 5.00

How do you measure a bolt?

Measure the length of a bolt from the underside of the bolt head to the end of the shank, and to measure diameter, measure the widest part of the shank of the bolt. Length and diameter can be measured in millimeters or inches, and they are the two principal dimensions of a bolt.

### What is the standard size of a bolt?

Bolt (fabric) The length is usually either 40 or 100 yards (37 or 91 m), but varies depending on the fabric being referred to; for example, a bolt of canvas is traditionally 39 yards (36 m). The width of a bolt is usually 45 or 60 inches (110 or 150 cm), but widths may include 35–36 inches (890–910 mm), 39 inches (990 mm), 41 inches (1,000 mm),…

### How to measure a bolt?

Method 1 Method 1 of 3: Measuring the Diameter Download Article. Use a bolt gauge to find the diameter quickly and easily.