A crescent wrench, also known as an adjustable wrench or adjustable spanner, is a versatile hand tool used for gripping and turning various objects, including nuts, bolts, pipes, and fittings. The wrench has an adjustable jaw that can be opened or closed to fit different sizes of fasteners. There are several types of crescent wrenches available, each with their own unique features and advantages.
- Standard crescent wrenches: The standard crescent wrench is the most basic and commonly used type. It has a straight handle and an adjustable jaw that can be opened or closed by turning a worm gear. The wrench is available in different sizes, typically ranging from 4 inches to 24 inches in length. The standard crescent wrench is suitable for general purpose applications, including automotive repairs, plumbing, and household tasks.
- Box-end crescent wrenches: The box-end crescent wrench, also known as a closed-end crescent wrench, has a closed or boxed-in end, which provides more contact area with the fastener and reduces the risk of rounding off the corners. The box-end crescent wrench is more suitable for use on hexagonal or square-shaped nuts and bolts, as it provides better grip and torque than a standard crescent wrench. However, the boxed-in end may limit the access to fasteners in tight spaces.
- Open-end crescent wrenches: The open-end crescent wrench has an open end that allows it to fit over the nut or bolt without having to slide it on from the end. This type of wrench is more suitable for use on hexagonal nuts and bolts in tight spaces where a boxed-in end would not fit. The open-end crescent wrench is available in different sizes, typically ranging from 4 inches to 24 inches in length.
- Ratcheting crescent wrenches: The ratcheting crescent wrench has a ratcheting mechanism that allows it to turn the fastener in one direction without having to reposition the wrench. The ratcheting feature saves time and effort, especially when working in tight spaces or with hard-to-reach fasteners. The ratcheting crescent wrench is available in different sizes and styles, including reversible and non-reversible types.
- Pipe wrench crescent wrenches: The pipe wrench crescent wrench, also known as a Still son wrench, has a hook-shaped jaw that is designed to grip and turn pipes and fittings. The pipe wrench crescent wrench is available in different sizes, typically ranging from 8 inches to 48 inches in length. The wrench is suitable for use on pipes made of different materials, including metal, plastic, and rubber.
- Basin wrench crescent wrenches: The basin wrench crescent wrench, also known as a sink wrench, has a long and narrow handle with a swiveling jaw that is designed to fit into tight spaces, such as under a sink. The basin wrench crescent wrench is commonly used for plumbing tasks, such as installing and removing faucet nuts and mounting nuts.
- Strap wrench crescent wrenches: The strap wrench crescent wrench has a flexible strap or chain that wraps around the object and tightens when the handle is turned. The strap wrench crescent wrench is suitable for use on delicate objects, such as polished or chrome-plated surfaces, as it does not leave any marks or scratches.
In summary, there are several types of crescent wrenches available, each with their own unique features and advantages. The choice of wrench depends on the specific task, the type of fastener, and the space available for the tool to be used. It is important to choose the right type of wrench and use it properly to avoid damage to the fastener or the tool itself.