Hand Taps -- A General Guide -- When To Use Which One

Standard Hand Taps

High Speed Steel Hand Taps with straight flutes are designed for general purpose hand tapping or in production machines where ground thread accuracy and performance are required. They are suitable for tapping most materials in through or blind holes. Hand taps retain chips in the flutes during use and work best on materials that produce chips and the swarf breaks easily. They are also known as Straight Flute Taps.

Left Hand Standard Hand Taps

High Speed Steel Left Hand Taps are designed to cut threads with a left hand rotation and are commonly used in applications where left hand studs and fasteners are needed.

Metric Standard Hand Taps

High Speed Steel Metric Hand Taps with straight flutes are designed for general purpose hand tapping or in production machines where ground thread accuracy and performance are required. They are suitable for tapping most materials in through or blind holes. Hand taps retain chips in the flutes during use and work best on materials that produce chips and the swarf breaks easily. They are also known as Metric Straight Flute Tap

Standard Hand Taps - +.005 Oversize Taps

Oversize taps are used primarily where a piece will be plated or heat treated after tapping. Oversize Taps are also known as Pre-Plate Taps.

Standard Hand Taps - Special Thread

Special Thread Hand Taps are designed for applications where standard coarse, fine, or extra-fine thread taps are not applicable or where design considerations require non-standard pitches. Most sizes are available in taper, bottoming, or plug chamfer. When taper or bottoming chamfer taps are not available in size ordered, plug chamfer taps will be substituted to complete order.

Standard Hand Taps (Metric) - Special Thread

Special Thread Metric Hand Taps are designed for applications where standard coarse, fine, or extra-fine thread taps are not applicable or where design considerations require non-standard pitches. Most sizes are available in taper, bottoming, or plug chamfer. When taper or bottoming chamfer taps are not available in size ordered, plug chamfer taps will be substituted to complete order.

 

Standard Hand Taps (Metric) - Left Hand

Metric Left Hand Taps are designed to cut threads with a left hand rotation and are commonly used in applications where left hand studs and fasteners are needed.












Threading Taps and Dies

Threading Taps


Standard Hand Taps (HSS and CS) are furnished in the following form of threads: National Coarse, National Fine, National Special, Whitworth Standard, and British Standard Fine. Hand taps to and including 3/8 inch have shanks full diameter of thread. Taps 7/16 inch and larger have shanks smaller than the root diameter of the thread.

Spiral Pointed Machine Screw Taps (HSS) are furnished with American National form of thread in plug style. Cut thread taps will be furnished unless ground thread are specified. Commercial ground thread taps will be furnished unless precision ground thread are specified. Precision ground thread taps are furnished in National Coarse and National Fine only, with pitch diameter limits from basic to  basic plus 0.0005 inch. Taper and bottom taps are special. Left-hand taps are special.

Spiral Pointed Hand Taps (HSS and CS) are furnished with American National form of thread in plug style. These taps to and including 3/8 inch have shanks full diameter of thread. Taps 7/16 inch and larger have shanks smaller than the root diameter of the thread.

Pulley Taps (HSS) are furnished with American National form of thread in plug style. Cut thread taps will be furnished unless ground thread are specified. Taper and bottoming taps are special. Left-hand taps are special.

Spiral Point Taps ( Dies and Reamers too)
Straight Shank Tapper Taps (HSS) are furnished with American National form of thread and plain round shanks. Cut thread taps will be furnished unless ground thread are specified. Left-hand taps are special.

British Association Taps (CS) are finished with the British Association form of thread in taper, plug or bottoming size. Also supplied in two flutes, spiral point. High speed steel are available in both cut thread and ground thread. Note that high speed ground thread taps in Whitworth form are made to order only.

Contact Taylor Tool by email (sales@taylortool.com) or by phone (519-658-9378) to order your threading taps or visit our website at www.taylortool.com

Threading Dies

Adustable Round Split Dies (fractional sizes) are furnished with National or Whitworth form of thread. National form is shipped unless otherwise specified. HSS Dies are special. Left-hand dies are special.

Adustable Round Split Dies (machine screw sizes) are furnished with National form of thread. HSS Dies are special. Left-hand dies are special.

Adustable Round Split Dies (pipe sizes) are furnished with American National form of thread. The diameter of the thread at the small end is such that the American National pipe plug guage will screw flush with the face of the die. Straight Pipe Dies are special. Left-hand dies are special.

Hexagon Die Nuts are designed and supplied for running over bruised or rusty threads. They are not intended for cutting. Made to standard Spanner sizes, and from heavy section steel.

Solid Square Bolt Dies have two and one-half to three threads chamfer on front face and one and one-half on rear face. Left-hand dies are special.