How Do I Know What Size Wrench I Need?

What are the most common wrench sizes?

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..

How do you determine bolt size?

This is how you choose the right bolt for the joint:First, identify the load case.Determine the necessary clamping force in the joint.Choose the smallest bolt diameter that can support the clamp load.Choose an effective bolt securing method.Decide on the most appropriate tightening method.

Is the diameter of a bolt the same as the wrench size?

When ordering a bolt you will need to determine. bolt​ diameter, thread​ pitch, and bolt length. … Technician A says that the diameter of a bolt is the same as the wrench size used to remove or install the fastener.

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 are the wrench sizes in order?

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.More items…

What are standard bolt sizes?

Typically, machine bolt sizes range from 1/4″ to 1 1/4″ for square heads and 3/8″ to 1 3/4″ in diameter for hex heads, and lengths span from about 3/4″ to 18″ for square and 6 1/2″ to 24″ for hex heads. Measure length from under the head to the threaded end of the bolt.

What diameter is a 1/2 bolt?

Heavy Hex Bolt DimensionsBolt DiameterDHBody DiameterHeight1/20.5150.3025/80.6420.3783/40.7680.45511 more rows

What can I use if I don’t have a socket wrench?

What to Use if You Don’t Have a WrenchDuck tape. Duct tape is useful in almost any situation but you may be surprised to learn that you can use it to loosen bolts. … Two coins. Who would think that money can be used as a makeshift tool? … Zip-tie. … Another nut and bolt.

What are the standard socket sizes smallest to largest?

Metric Socket Sizes Chart1/4″ Drive3/8″ Drive1/2″ Drive5mm7mm10mm5.5mm8mm11mm6mm9mm12mm7mm10mm13mm18 more rows

How do I know what size socket I need?

How to Determine the Right Size Socket for a NutTurn on the digital caliper and set it to read in inches, not millimeters. Set the nut on a flat surface. … Close the caliper jaws until each jaw rests on one flat side of the nut on opposite sides.Check the caliper display. The reading shows the size of the nut as a decimal.

What size socket wrench do I need?

The rule of thumb is that the drive size of the ratchet and sockets should approximate the diameter of the bolt or nut you want to turn. Thus, when you’re working with fasteners that are more or less 1/4″ or 6mm, use the 1/4″ drive. If you’re working with hardware that’s roughly 3/8″ or 10mm, use the 3/8″ set.