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HAND TAP
These standard style taps have straight flutes of a number specified
as either standard or optional. Hand taps are for general purpose
applications such as production tapping or hand tapping operations.
Taper, plug and bottoming styles provide versatility
in tough materials, blind and through holes.
SPIRAL POINT TAP
As to general physical dimensions, spiral point taps are identical
with the standard hand tap. However, the spiral point tap has
the cutting face of the first few threads cut at a pre-determined
angle relative to the tap's axis angle to force the evacuation
of chips ahead of the cutting action. This feature, plus the
excellent shearing action of the flute, make spiral pointed taps
ideal for production tapping of through holes. Typically, this
type of tap has a shallower flute passage than conventional taps.
This gives the spiral point tap more cross-sectional area, which
means greater strength, allows higher tapping speeds, and requires
less power to drive.
Regular (or slow) Spiral
Fast Spiral |
SPIRAL FLUTED TAP
These taps, as the name implies, are made with spiral flutes
instead of straight flutes. This spiral fluting feature aids
in drawing chips out of a hole, or serves to bridge a gap inside
the hole such as a keyway or cross-hole. Commonly available in
slow spiral (25-30¡ helix angle) or fast spiral (45-60¡).
INTERRUPTED THREAD TAP
These taps have an odd number of lands with alternate teeth in
the thread helix removed. The removal of every other tooth helps
to break the chip and allows a greater supply of lubrication
to reach the cutting teeth, reducing the incidence of torn threads.
Ideal for tapping non ferrous metals and low carbon steel; as
well as use in titanium and high hardness alloys.
THREAD FORMING TAP
These taps are fluteless except as optionally designed with one
or more lubrication grooves. The thread form is lobed so there
is a finite number of points contacting the work. This tap does
not cut, so it is 'chipless', and consequently will not cause
a chip problem. The tool forms the thread by extrusion, thus
thread size can be closely maintained. The fluteless design allows
high quality threads, faster tapping speeds, higher production,
and generates no chips which simplifies tapping of blind bottoming
holes (threads can be formed the full depth of the hole).
Straight Pipe Tap
Taper Pipe Tap |
PIPE TAP
These taps are for producing standard straight or tapered pipe
threads in a wide range of pipe connections. Manufactured with
the appropriate design variations to cut specified pipe thread
forms.
COMBINED DRILL & TAP
This high production tool is specially designed to drill and
tap in one pass only. By design, this value-added tool reduces
machining operations and subsequent parts handling. The drill
end features a self-centering helical point, and the tool shank
and square fit standard tap holders.
ACME THREAD TAP
Acme screw threads were devised to allow rotary and transversing
motion on machines; and are also used in jacks, valves, presses
and other mechanisms where heavy loads are encountered. The acme
thread is characterized by a 29° included angle. Acme taps
typically require specialized engineering and design due to the
nature and severity of cut required in producing Acme threads.
how to order acme taps
TRAPEZOIDAL THREAD TAP
Trapezoidal screw threads were devised to allow rotary and transversing
motion on machines; and are also used in jacks, valves, presses
and other mechanisms where heavy loads are encountered. The trapezoidal
thread is characterized by a 30° included angle. Trapezoidal
taps typically require specialized engineering and design due
to the nature and severity of cut required in producing trapezoidal
threads.
( these are the metric equivalent of Acme Taps but with a
30° included angle )
how to order trapezoidal taps
TANDEM ACME TAP
These taps combine the initial roughing cut with the final finishing
cut, in one pass, to achieve an acme screw thread. These taps
are economical and enhance production levels by saving on the
operation of two tools. Since acme thread pitches are generally
coarse relative to diameters, these taps are subjected to heavy
chip loads. To achieve a high quality acme thread in a cost-effective
manner, roughing and finishing operations are recommended.
EXTENSION TAP
These taps are made to conventional tap dimensions, except that
they have an extended shank to reach inaccessible holes. Thread
length, shank diameter, and shank square are made to standard
specifications listed in Table 302. Extension taps are available
in both hand and spiral point styles, and in small shank style.
PULLEY TAP
The hub portion of pulley parts contain oil cups and set screw
holes, most of which cannot be reached with ordinary hand taps.
Pulley taps have the same basic thread dimensions as hand taps,
but pulley taps differ in that they have a longer shank which
is of the same basic major diameter as the threaded portion.
When tapping pulley hub holes, the taps are inserted through
holes in the rims which are slightly larger than the shanks of
the taps. These holes serve as guides or bushings for the taps
to assure proper alignment when tapping. Pulley taps can also
be used for general tapping in parts where an extra long length
is required to reach the holes being tapped.
NUT TAP
Nut taps feature a long chamfer which assists in entering the
drilled hole, and distributes the cutting action over several
teeth. These taps were initially designed for tapping nuts and
have a long thread length. The shank diameter is smaller than
the tap's minor diameter to allow the accumulation of several
nuts after tapping. Nut taps also feature an extended square
length.
SOLID CARBIDE TAP
These taps allow higher metal removal rates through higher speeds,
which are possible through the micrograin structure of carbide.
Users will also benefit from a dramatic increase in tap life,
less downtime, fewer tool changes, and consistent high quality
thread finishes.
CARBIDE INSERT TAP
These taps are an economical alternative to solid carbide taps,
especially in larger diameter tools. Solid carbide cutting face
inserts are brazed to a H.S.S. tap body, then threaded to exacting
specifications. Carbide cutting teeth allow higher performance
and production. |