How do you read tap and die sizes?

Thus, a tap or die marked 1/4-20 NC cuts threads for a 1/4-inch-diameter screw or bolt with 20 coarse threads per inch. Taps and dies with diameters less than 1/4-inch are numbered according to the wire gauge sizes of machine screws. For example, a die marked 10-32 NF will cut threads for a No.

What is the difference between a tap and a die?

A tap is used to cut or form the female portion of the mating pair (e.g. a nut). A die is used to cut or form the male portion of the mating pair (e.g. a bolt). The process of cutting or forming threads using a tap is called tapping, whereas the process using a die is called threading.

What size hole do I drill for a 5/16 tap?

In this case, the most relative drill bit size corresponding to the 5/16″-18 tap is 17/64, which corresponds to an F drill bit.

How does the tap and die chart work?

The tap and die chart corresponds to different drill sizes and diameters. All you have to do to read it is to match the size of drill with the right characteristics like the thread count for every inch and the material type of a drill. Taps cut internal threads to suit different applications. They are available in the most common 4 types:

What do you need to know about a tap drill chart?

When finding a tap drill size for your fastener in a tap drill chart you need a little more information about your fastener. Knowing the size is only the first part of the puzzle. You’ll also want to know the bolt’s corresponding Major Diameter. The good news is that each screw size has just one major diameter.

How does the tap size chart work in machining?

The tap size chart provides a list of standard size taps, specifying the diameter and thread spacing, for fractional, metric, and screw sizes. The decimal equivalents of the diameters are shown in both English and Metric units. Fractional sizes are listed in inches, while metric sizes are listed in millimeters following the letter “M”.

How big of a die do I need for taps?

Tap Driver – Small For Taps No. 4 to 1/4″ (3mm to 6mm) 1766068 4935052 Tap Driver – Medium For Taps 1/4″ to 1/2″ (6mm to 12mm) 1766069 4935053 Die Stock For 1″ Hexagon Dies; Accepts Small & Medium Adj. Tap Sockets to Drive Taps 1766070 4935054 HANSON PTS Die Stock Handle 4935054