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The Daily Insight

What size socket is 19 mm?

Author

Abigail Rogers

Updated on April 21, 2026

Metric / Standard Wrench Conversion Chart

Bolt DiameterMetricStandard
1/2″19mm3/4″
9/16″21mm13/16″
22mm7/8″
5/8″24mm15/16″

Is there a 22mm socket?

The 22 mm metric deep Impact Socket is engineered and constructed to endure high torque application with impact wrenches.

What SAE socket is close to 19mm?

SAE to Metric Conversion Chart

SAEMetricInch
23/32″0.719
19mm0.748
3/4″0.75
25/32″0.781

What size is equivalent to 19mm?

3/4 Inch

MMApproximate Size In InchesExact Size In Inches
19mmLittle under 3/4 Inch0.74803 Inches
20mmJust short of 13/16 Inch0.78740 Inches
21mmLittle over 13/16 Inch0.82677 Inches
22mmJust short of 7/8 Inch0.86614 Inches

What is a single hex socket?

A “hex” socket—short for “hexagonal”—is a socket that fits around a hexagonal (six sided) nut or bolt head. The six-point hex socket has six points (angles) inside the bolt end, making a perfectly even hexagon. The twelve-point socket—also sometimes called a “double hex” or “bi-hex”—has twelve angles in the bolt end.

Is there a 23 mm socket?

Capri Tools Deep Impact Socket, 3/8-Inch Drive, 6-Point, Metric (23 mm)

What is the standard size for a 22 mm socket?

1/2″ Drive 6 Point Standard Metric Socket 22mm.

What is the size of a hex socket?

Hex socket sizes. Socket head. Socket heads can be measured in both metric and imperial units. Metric socket sizes can range from 3mm to over 80mm, while imperial socket sizes range from 5/32″ to over 1-½”.

What size is hex key?

Hex Key Dimensions. The dimensions of a hex key vary. Some of them are only 1.5 mm, while others are 2 mm. Other common sizes are 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm 5 mm and higher.

What is hex key socket?

A hex key, also known as an Allen key or Allen wrench, is a small handheld tool that’s used for for driving bolts and screws with a hexagonal socket. They are available in many different sizes, though they all have the same hexagonal-shaped tip.

What is a hex socket wrench?

Hex keys are measured across-flats (AF), which is the distance between two opposite (parallel) flat sides of the key. Using a hex wrench on a socket that is too large may result in damage to the fastener or the tool. An example would be using a 5 mm tool in a 5.5 mm socket.