GEARWRENCH 82812 Ratcheting Tap and Die Set, Large, 114 Pcs

Gearwrench 82812 tap and die set is a cutting tool that creates threads on components, such as bolts, nuts and screws. A tap is a threaded tool used to cut or produce threads in the female portion of a mating pair, whereas a die is a threaded tool that cuts or forms threads in the male portion of a mating pair.

Features:

• Gearwrench 82812 tap and die set features die adapters that work on round & hex-shaped dies.
• It is equipped with ratcheting T-handles that wind dies with a 5-degree swing arc and has a reversing lever to eliminate hand-over-hand turning.
• This 82812 tap and die set has a twist lock guide system that decreases the "walk back" of the die guide and keeps the dies centred while cutting.

Standards and Approvals:

• ASME/ANSI B94.9-1999

Frequently Asked Questions:

Q. What is the difference between a tap and a die?

A. A tap and a die set can create screw threads on components like screws, bolts, or nuts. They are further capable of making a threaded hole to accommodate screw components. The main difference between a tap and a die is as follows:

• A tap is used to cut or form threads on the inside surface of a hole, creating a female surface which functions like a nut.
• A die, on the other hand, cuts a thread on the outer surface of cylindrical material, creating a male-threaded piece functioning like a bolt.

Q. How do I maintain GearWrench tap and die set?

A.

• Inspect the dies regularly to see they are sharp and free from nicks.
• Always apply cutting oil to the dies / taps to prevent overheating and marring of the cut threads.
• Store the tap & die set in a dry and cool place to prevent corrosion and rust due to moisture present in the environment.
• Do not attempt to sharpen the taps and die manually. This procedure must be done by experienced personnel as a wrong action might tamper with the thread characteristics, chamfer angle and spiral point.

Q. What are the 3 different types of taps in a set?

A. There are 3 main taps that one should be familiar with: Taper, Plug and Bottoming tap.

Q. What is the difference between tapping and threading?

A. Tapping is the process of especially generating internal threads, such as the threads inside a nut and threading is a process of generally making external threads, like threads on the outside of bolts.

Q. What does NF mean on a tap and die set?

A. NF refers to the thread type on a tap and die set. NC means National Coarse (USS), NF means National Fine (SAE), NS means National Special and NEF refers to National Extra Fine.