What's the difference between a standard socket and an impact socket?

Standard sockets, typically chrome-vanadium steel, are designed for hand tools like ratchets and wrenches. Impact sockets, made from tougher chrome-molybdenum steel, are specifically heat-treated to withstand the high torque and repetitive impacts of power tools like impact wrenches. Using a standard socket on an impact tool can cause it to shatter, posing a safety risk. Impact sockets like those from Sunex Tools are also generally thicker-walled than standard sockets to handle the increased stress.

What does '6-point' or '12-point' refer to when describing a socket?

The 'point' designation refers to the internal shape of the socket that grips the fastener. A 6-point socket grips the fastener on its six corners, offering a more secure grip and reducing the risk of rounding, especially on corroded or damaged fasteners. A 12-point socket engages the fastener at twelve points, offering more versatility in tight spaces where access is limited. For high-torque applications, 6-point sockets are generally preferred to prevent fastener damage. Consider a set like the Grey Pneumatic 1/4" Drive Standard & Deep Length Metric Master Set for a variety of applications.

What are the advantages of deep sockets versus shallow (standard) sockets?

Deep sockets, also known as long sockets, are designed to reach fasteners located in recessed areas or on long bolts where a standard socket wouldn't have enough clearance. They provide the necessary depth to fully engage the nut or bolt. Standard or shallow sockets are suitable for most general applications where fastener access isn't restricted. Many sets, like some Sunex Tools offerings, include both deep and standard sockets to cover a wider range of tasks.

What's the difference between hand-driver sockets and impact sockets?

Hand-driver sockets are crafted from chrome vanadium steel and are designed for use with manual ratchets, breaker bars, and wrenches. Impact sockets are made from chrome molybdenum steel, which is much stronger and more ductile. This allows them to withstand the repeated high-torque impacts delivered by impact wrenches and drivers. Using a hand-driver socket with an impact tool is dangerous, as it can shatter. Always use impact-rated sockets with impact tools.

What does 'surface drive' mean in relation to sockets?

'Surface drive' refers to a socket design where the load is applied to the flats of the fastener instead of the corners. This design reduces the risk of rounding off the corners of nuts and bolts, especially when dealing with corroded or overtightened fasteners. Surface drive sockets are particularly useful in applications where fastener damage is a concern. Grey Pneumatic is one brand that offers surface drive sockets.

How do I choose the right drive size (1/4", 3/8", 1/2", etc.) for my socket set?

The drive size refers to the square opening on the socket that connects to the ratchet or impact wrench. Smaller drive sizes like 1/4" are typically used for lower torque applications and smaller fasteners. Larger drive sizes such as 1/2" or 3/4" are used for higher torque applications and larger fasteners. Consider the typical size of fasteners you'll be working with and the torque requirements of the job when selecting a drive size. A 3/8" drive is a good general-purpose choice for many automotive tasks.

Are metric socket sets interchangeable with SAE (standard) socket sets?

No, metric and SAE (standard) sockets are not fully interchangeable, although some sizes may be very close. Using the wrong size can damage the fastener by rounding the corners. It's always best to use the correct type of socket for the fastener you're working with. Metric fasteners are common on imported vehicles and equipment, while SAE fasteners are more common on older domestic vehicles. Many sets include both metric and SAE sizes to cover a wide range of applications.

What should I look for in the storage case for a metric socket set?

A good storage case should be durable, organized, and easy to transport. Look for a case made from sturdy materials like high-density plastic or metal. The case should have clearly labeled slots or markings for each socket size, making it easy to find the right socket quickly. A case with a secure latch or closure will prevent the sockets from falling out during transport. Some cases, like those included with Sunex Tools sets, are designed to be stackable for efficient storage in your shop or toolbox.