High Speed Steel
Ground Thread

Fluteless

Machine Screw,
Fractional and
Metric Sizes

Besly X-Press¨ Taps cold form threads in ductile materials such as brass, copper, aluminum and leaded steels. Since X-Press¨ taps have no cutting edges, thread size can be maintained closely. Unusually smooth threads can be formed the full depth of the hole. Size from #8 machine screw and larger have two lubrication grooves to carry lubricant to the forming threads. These grooves help prevent seizing or galling in stringy materials, and provide better performance in deep or cored holes. Choose Catl No. 2000 for machine screw and fractional sizes and Catl No. 4004 for metric sizes.

High Speed Steel
Ground Thread

Fast Spiral Flute
2, 3 and 4 Flute

Machine Screw,
Fractional and
Metric Sizes

Besly Turbo Cut¨ Taps have a revolutionary fast spiral flute design that does a one-pass job in deep, blind holes and makes tapping cleaner and easier in thru holes. Turbo Cut¨ Taps provide the utmost accuracy in ductile materials while maintaining an extremely high rate of production. Choose Catl No. 4113H for machine screw and fractional sizes and Catl No. 4144 for metric sizes.

High Speed Steel
Ground Thread

Straight Flute
2, 3, 4 and 6 Flute

Machine Screw and
Fractional Sizes

Besly Standard Straight Flute Taps are for general use in production tapping or hand operations. A choice of taper,  plug and bottoming chamfer styles provide great versatility in tough materials with blind or thru holes. Choose Catl No. 4115 for machine screw sizes and Catl No. 4111 for fractional sizes. Both catalog styles are also available in complete sets of one taper, one plug and one bottoming tap of the same size.

High Speed Steel
Ground Thread

Straight Flute
2 and 3 Flute

Fractional Sizes

These Besly Standard Straight Flute Taps are  available in two and three flute designs. Wider flutes make the two flute taps ideal for horizontal tapping. Three flute taps are suggested for use in deep, or blind holes in soft, stringy materials. They provide more room in the flutes for chip removal than four flute taps.

High Speed Steel
Ground Thread

Straight Flute
2, 3, 4 and 6 Flute

Metric Sizes

Besly Standard Straight Flute Taps are for general use in production tapping or hand operations. Catl No. 4124 is manufactured by Besly to meet the growing demand for metric sizes. Choose the plug chamfer style for thru hole applications or blind holes with sufficient clearance. The bottoming style is used for threading deep or blind holes to the bottom. 

High Speed Steel
Ground Thread

Spiral Pointed
2 and 3 Flute

Machine Screw,
Fractional and
Metric Sizes

Besly Standard Spiral Pointed Taps have angular flutes at the front end of the tap to propel the chips ahead of the tap. This feature plus the excellent shearing action of the flute make spiral pointed taps ideal for production tapping of thru holes. These tools are available in machine screw (Catl No. 4125), fractional (Catl No. 4120) and metric (Catl No. 4134) sizes.

High Speed Steel
Ground Thread

Spiral Flute
2 and 3 Flute

Machine Screw and
Fractional Sizes

Besly Standard Spiral Flute Taps are designed for easy removal of chips from blind holes and for tapping holes in which a keyway or opening must be bridged by the tap lands. These taps have 30 degree spiral flutes.

High Speed Steel
Ground Thread

Straight Flute
4, 5 and 7 Flute

Fractional Sizes

Besly Standard Straight Flute Taper Pipe Taps come in many catalog styles to suit every need. Catl No. 3165H (NPT) and Catl No. 3166H (NPTF) are Hi Angle Pipe Taps  designed with a high rake angle and deep flutes to handle the tough curly chips of low carbon and leaded steels, boiler plate aluminums and die castings. They are available with various surface treatments. Catl No. 3164 (ANPT), Catl No. 3165 (NPT), and Catl No. 3166 (NPTF) are Medium Angle Pipe Taps and may be used in most materials under average conditions. Catl No. 3165L (NPT) and Catl No. 3166L (NPTF) are surface treated Lo Angle Pipe Taps which have radial cutting faces and heavy lands for excellent tapping in regular cast iron and meehanite. Catl No. 3175 (PTF) are Short Dryseal Taper Pipe Taps which are manufactured to Automotive standards for taps used to thread shallow holes. 

High Speed Steel
Ground Thread
Interrupted Threads

Straight Flute
5 and 7 Flute

Fractional Sizes

These Besly Standard Taper Pipe Taps are made with interrupted threads for use in soft or stringy metals. The removal of every other tooth helps to break the chip and permits a larger supply of lubrication to reach the cutting teeth, thus helping to eliminate torn threads. Choose Catl. No. 3167 (NPTF), Catl. No. 3168 (NPT), or Catl. No. 3169 (ANPT).

High Speed Steel
Ground Thread

Fast Spiral Flute
4 Flute

Fractional Sizes

Besly Standard Turbo Cut¨ Taper Pipe Taps generate round and smooth threads in pipe connections to prevent leaks.  Secondary chip cleaning operations are not needed.  For use in most metals, including nonsulfurized steels, stainless steels and diecast metals.  These taps have 30 degree spiral flutes and are available in Catl No. 3161 (NPT) and Catl No. 3162 (NPTF).

High Speed Steel
Ground Thread

Fast Spiral Flute
3 and 4 Flute

Fractional Sizes

Besly Standard Turbo Cut¨ Straight Pipe Taps are for high production tapping of round smooth threads in diecast metals, nonsulfurized steels and stainless steels.  Secondary chip cleaning operations are normally not necessary.  These taps have 50 degree spiral flutes and are available in Catl No. 3172 (NPS) and Catl No. 3173 (NPSF).

High Speed Steel
Ground Thread

Straight Flute
4 and 5 Flute

Fractional Sizes

Besly Standard Straight Pipe Taps are used primarily for tapping internal straight threads in pipe couplings and free-fitting mechanical joints for fixtures. Available in Catl No. 3170 (NPS, NPSC, NPSM) and Catl No. 3171 (NPSF).

High Speed Steel
Ground Thread (GH7)

Straight Flute
3 and 4 Flute

Machine Screw Sizes

These Besly Special Purpose Taps cut slightly oversize to accommodate platings or to provide greater wear life in abrasive materials.

High Speed Steel
Ground Thread (GH7)

Straight Flute
2 Flute

Machine Screw Sizes

These Besly Special Purpose Taps are slightly oversize for production tapping of through holes which are to be plated.

High Speed Steel
Ground Thread

Short Flute
2 and 3 Flute

Machine Screw and
Fractional Sizes

These Besly Special Purpose Taps are for production tapping of thin sections of steel, brass, copper and aluminum. Spiral Points and heavy cross sections provide shearing action and increased rigidity to reduce breakage caused by misalignment.

High Speed Steel
Ground Thread

Spiral Flute
2, 3 and 4 Flute

Machine Screw and
Fractional Sizes

These Besly Special Purpose Taps are ideal for all threading involving helical coil inserts. They are ideal for soft, ductile materials and  are especially good for deep, blind or long through holes and have been designed for high production tapping.

High Speed Steel
Ground Thread

Straight Flute
3 and 4 Flute

Machine Screw and
Fractional Sizes

These Besly Special Purpose Taps are for production tapping of holes which are to accept screw thread inserts.

High Speed Steel
Ground Thread

Spiral Pointed
2 Flute

Machine Screw and
Fractional Sizes

These Besly Special Purpose Taps are for high production tapping of through holes which are to accept screw thread inserts.

High Speed Steel
Ground Thread

Straight Flute
3 Flute

Fractional Sizes

These Besly Special Purpose taps are for high production tapping of through holes in non ferrous metals and low carbon steel. The interrupted thread design reduces the incidence of torn threads. They can also be used in titanium and high hardness alloy steels.

High Speed Steel
Ground Thread

Spiral Point
3 Flute

Fractional Sizes

These Besly Special Purpose taps are for high production tapping of through holes in non ferrous metals and low carbon steel. The interrupted thread design reduces the incidence of torn threads. They can also be used in titanium and high hardness alloy steels.

High Speed Steel
Ground Thread

Straight Flute
4 Flute

Fractional Sizes

These Besly Special Purpose Taps are for small production runs in conventional tapping machines. They have a relatively long shank smaller than the minor diameter to permit the accumulation of several nuts after tapping.

High Speed Steel
Ground Thread

Straight Flute
4 Flute

Fractional Sizes

These Besly Special Purpose Taps have the same major and pitch diameters as standard fractional size taps, but with extended shanks for reaching locations inaccessible to regular hand taps.

High Speed Steel
Ground Thread

Straight Flute
3 and 4 Flute

Machine Screw, 
Fractional and 
Metric Sizes

These Besly Special Purpose Taps are surface treated to resist the abrasiveness of cast iron, and have controlled straight cutting faces for efficient tapping of true cast iron and other brittle metals. Available in machine screw (Catl No. 4115C), fractional (Catl No. 4111C) and metric (Catl No. 4124C) sizes.

High Speed Steel
Ground Thread

Straight Flute
4 Flute

Machine Screw and
Fractional Sizes

These Besly Special Purpose Piloted Taps help locate the workpiece for tapping especially when holes enter at an angle. The pilot acts as a locator and guide, eliminates special fixtures and reduces tap breakage. Pilot diameters will fit holes drilled for 75% thread height. Available in machine screw (Catl. No. 4115P) and fractional (Catl. No. 4111P) sizes.

High Speed Steel
Ground Thread

Straight Flute
4 Flute

Metric Sizes

These Besly Special Purpose Taps as the name indicates, are available for tapping metric size holes for spark plugs in accordance with S.A.E. specifications.

High Speed Steel
Ground Thread

Straight Flute
3 and 4 Flute

Machine Screw and
Fractional Sizes

These Besly General Purpose Taps in taper, plug and bottoming chamfer styles provide the versatility needed by many machine shops for routine tapping jobs. Also available in complete sets of one taper, plug and bottoming tap of the same size. Select Catl. No. 2115 for machine screw sizes and Catl. No. 2111 for fractional sizes.

High Speed Steel
Ground Thread

Spiral Pointed
2 and 3 Flute

Machine Screw and
Fractional Sizes

These Besly General Purpose Taps provide excellent service to small shops and tools rooms on routine tapping jobs. Select Catl. No. 2125 for machine screw sizes and Catl. No. 2120 for fractional sizes.

High Speed Steel
Ground Thread

Straight Flute
4, 5 and 7 Flute

Fractional Sizes

These Besly General Purpose Taps give a satisfactory performance in routine pipe tapping jobs.

High Speed Steel
Ground Thread

Straight Flute
4, 5 and 7 Flute

Fractional Sizes

These Besly General Purpose Interrupted Thread Taper Pipe Taps are designed for the small shops where a less precise tap is required for routine jobs.

High Speed Steel
Ground Thread

Straight Flute
4 and 5 Flute

Fractional Sizes

These Besly General Purpose Straight Pipe Taps are for routine or maintenance jobs.

High Speed Steel
Steel Index Case

Machine Screw,
Fractional and
Metric Sizes

These Besly Tap and Drill Sets contain straight flute, plug chamfered taps and jobbers length, surface treated drills in a steel index case for easy access and storage.

Carbon Steel
Cut Thread

Straight Flute
2, 3 and 4 Flute

Machine Screw and
Fractional Sizes

These Besly Carbon Taps are for general hand and limited production tapping. For hand tapping in relatively hard materials or in bottoming holes the use of taper, plug and bottoming taps, in the order named, is suggested. The taper tap is helpful in starting a tapped thread square with the workpiece. The plug tap is, however, the most widely used tap in both hand and production tapping. Choose Catl. No. 2104 for machine screw sizes and Catl. No. 2100 for fractional sizes.

Carbon Steel
Cut Thread

Straight Flute
4, 5, 6, 7 and 9 Flute

Fractional Sizes

These Besly Carbon Taper Pipe Taps are designed for general hand and limited production tapping in milder materials. They will work well for thread repair or thread chasing.