Unit Two: Construction Tools, Tool Use and Tool Safety

Introduction to Hand Tools:Fastening, Gripping and Clamping

Tools

Fastening, Gripping and Clamping Tools:

Claw Hammer

The claw hammer is used to deliver an impact to an object, most often driving nails or fitting parts. Hammers are designated by weight and design. A typical utility hammer would weigh 16 to 20 ounces where a framing hammer is going to weigh 24 to 28 ozs. The claw end of the hammer head can be used to pull nails out of wood or pry pieces apart.

Fastening, Gripping and Clamping Tools:

Screwdrivers

A screwdriver is used to turn screws by hand. Screwdriver tips are made to match a variety of screw types including:

Phillips Robertson

slotted

Fastening, Gripping and Clamping Tools:

Clamps

A clamp is a typically used to hold a wood or metal work piece firmly in place.

“C” clamp “F” clamp “pipe” clamp

Fastening, Gripping and Clamping Tools:

Pliers

Pliers are a hand tool used to hold objects firmly. They are also used for cutting or bending soft metal pieces. There are a variety of models available as shown in the following photographs.

common pliers channel lock pliers

needle nose pliers

Fastening, Gripping and Clamping Tools:

Vice Grips

Locking pliers or Vise-Grips are pliers that can be locked into position.

Fastening, Gripping and Clamping Tools:

Wrench

A wrench is a tool used to provide grip and mechanical advantage when turning nuts or bolts. They are available in a variety of sizes and in either “open end” or “box end” styles.

“open end” “box end”

Fastening, Gripping and Clamping Tools:

Pipe Wrench

A pipe wrench is a plumbing tool with self-tightening properties and hardened, serrated jaws that securely grip soft iron pipe and pipe fittings.

Fastening, Gripping and Clamping Tools:

Socket Wrench

A socket wrench consists of a ratcheting handle that attaches to the socket tool. The socket is designed to fit snuggly over a nut or bolt. The socket wrench is then used as a leveraging tool for turning the nut or bolt.

Fastening, Gripping and Clamping Tools:

Crescent Wrench

A crescent wrench has a movable jaw that adapts the tool to different sized nuts or bolts. This adjustable wrench can then be used to turn the nut or bolt.