Gost-2092-77 Lengthened twist drill with taper shank basic dimension

Gost-2092-77 Lengthened twist drill with taper shank basic dimension

For more information: http://www.scharptools.com/Met-drill345.htm

Tap Terms- Thread angle Pitch

Flank Angle: Angle between the individual flank and the perpendicular to the axis of the
thread, measured in an axial plane. A flank angle of a symmetrical thread is commonly
termed the “half angle of thread.”
Flank—Trailing: The trailing flank of a thread is the one opposite the leading flank.
Flutes: Longitudinal channels formed in a tap to create cutting edges on the thread profile
and to provide chip spaces and cutting fluid passages. On a parallel or straight thread
tap they may be straight, angular or helical; on a taper thread tap they may be straight,
angular or spiral.
Flute-Angular: A flute lying in a plane intersecting the tool axis at an angle.
Flute-Helical: A flute with uniform axial lead and constant helix in a helical path around
the axis of a cylindrical tap.
Flute-Spiral: A flute with uniform axial lead in a spiral path around the axis of a conical
tap.
Flute Lead Angle: Angle at which a helical or spiral cutting edge at a given point makes
with an axial plane through the same point.
Flute-Straight: A flute which forms a cutting edge lying in an axial plane.
Front Taper: A gradual increase in the diameter of the thread form on a tap from the
leading end of the tool toward the back.
Hook Angle: Inclination of a concave cutting face, usually specified either as Chordal
Hook or Tangential Hook.
Hook-Chordal Angle: Angle between the chord passing through the root and crest of a
thread form at the cutting face, and a radial line through the crest at the cutting edge.
Lead Deviation: Deviation from the basic nominal lead.
Progressive Lead Deviation: (1) On a straight thread the deviation from a true helix
where the thread helix advances uniformly. (2) On a taper thread the deviation from a true
spiral where the thread spiral advances uniformly.
Length of Thread: The length of the thread of the tap includes the chamfered threads and
the full threads but does not include an external center. It is indicated by the letter “B” in the
illustrations at the heads of the tables.
Limits: The limits of size are the applicable maximum and minimum sizes.
Major Diameter: On a straight thread the major diameter is that of the major cylinder.
On a taper thread the major diameter at a given position on the thread axis is that of the
major cone at that position.
Minor Diameter: On a straight thread the minor diameter is that of the minor cylinder.
On a taper thread the minor diameter at a given position on the thread axis is that of the
minor cone at that position.
Pitch Diameter (Simple Effective Diameter: On a straight thread, the pitch diameter is
the diameter of the imaginary coaxial cylinder, the surface of which would pass through
the thread profiles at such points as to make the width of the groove equal to one-half the
basic pitch. On a perfect thread this coincidence occurs at the point where the widths of the
thread and groove are equal. On a taper thread, the pitch diameter at a given position on the
thread axis is the diameter of the pitch cone at that position.

For more information: www.scharptools.com

Tap Chamfer Type Anschnittformen Form A Form B Form C

Tap Chamfer Type Anschnittformen Form A Form B Form C

For more information:  http://www.scharptools.com/Met-tap.htm

Din8041 Carbide tipped Taper Shank Twist drill bits for metals ,Spiral Bohrer mit Morsekegel

Din8041 Carbide tipped Taper Shank Twist drill bits for metals ,Spiral Bohrer mit Morsekegel

For more information: http://www.scharptools.com/Met-drill_din8037.html

ANSI Standard Spiral Pointed Ground Thread Taps — M Profile — Metric Sizes ASME/ANSI B94.9-1987

ANSI Standard Spiral Pointed Ground Thread Taps —
M Profile — Metric Sizes ASME/ANSI B94.9-1987

For more information:  http://www.scharptools.com/Met-tap-spiral.htm

ANSI Standard Nut Taps ASME/ANSI B94.9-1987

ANSI Standard Nut Taps ASME/ANSI B94.9-1987

                  

For more information:  http://www.scharptools.com/Met-tap-nut.htm

DIN 1835-B (PRPN-ISO 3338-2) - Welon shank

DIN 1835-B (PRPN-ISO 3338-2) - Welon shank

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High speed steel straight shanks, DIN 1835-1

High speed steel straight shanks, DIN 1835-1

For more information: http://www.scharptools.com/about.htm

ANSI/ASME B94.19-1997 Multiple- and Two-Flute Single-End Helical End Mills with Plain Straight and Weldon Shanks

ANSI/ASME B94.19-1997 American National Standard Multiple- and Two-Flute Single-End Helical End Mills with Plain Straight and Weldon Shanks

For more information: http://www.scharptools.com/two_flute_end_mill_inch.html

Din851 T slot cutter T-Nutenfraser

Din851 T slot cutter T-Nutenfraser

For more information:  http://www.scharptools.com/Met-end851.htm

ANSI B94.2-1983,R1988 American National Standard Expansion Hand Reamer

ANSI B94.2-1983,R1988 American National Standard Expansion Hand Reamer
Straight and helical flutes, squared shank.

hand expansion reamer

For more information: http://www.scharptools.com/Met-cou-right.htm

Gost1604-71 Nut tap

Gost1604-71 Nut tap

DIN885 Side and Face Milling Cutter Scheibenfraser

DIN885 Side and Face Milling Cutter Scheibenfraser

For more information:   http://www.scharptools.com/Met-end885.htm

Din8037 Carbide Tipped Straight Shank Twist Drill Bit Spiral Bohrer mit Zylinderschaft mit Schneid Platte aus Hartmetall

Din8037 Carbide Tipped Straight Shank Twist Drill Bit  Spiral Bohrer mit Zylinderschaft mit Schneid Platte aus Hartmetal

For more information: http://www.scharptools.com/Met-drill_din8037.html

Din212 Machine reamer with parallel shank Alesoirs a machine a queue cylinarique

Din212 Machine reamer with parallel shank, Alesoirs a machine a queue cylinarique

For more information:
 http://www.scharptools.com/Met-cou-din212A%20machine%20reamer.html

ANSI B94.2-1983 American National Standard Fluted Taper Shank Chuck Reamers Fractional Size

ANSI B94.2-1983 American National Standard Fluted Taper Shank Chuck Reamers Fractional Size

For more information: http://www.scharptools.com/Met-cou-tapershank.htm

Medical Domed Sanding Drum

Medical use domed sanding drum, fine,medium,coarse.
Domed mandrel, size 5x11,7x13.........

for more information: frankpan@scharptools.com

Din1880 Sell End Mill Walzenstirnfraser Mit Quernut Und Langsnut

Din1880 Sell End Mill Walzenstirnfraser Mit Quernut Und Langsnut

For more information:  http://www.scharptools.com/Met-end-shell%20end%20mill.html

Din850 Woodruff Key Seat Cutter Fraises Pour Logement De Clavette

Din850 Woodruff Key Seat Cutter Fraises Pour Logement De Clavette

For more information: http://www.scharptools.com/Met-end-woodruff%20cutter.html

ANSI/ASME B94.11M-1993 Straight Shank Twist Drill- Length though 24.5mm, Jobber Length through 17.5mm

ANSI/ASME B94.11M-1993 Straight Shank Twist Drill- Length though 24.5mm, Jobber Length through 17.5mm

For more information: http://www.scharptools.com/Met-drill94.11.htm

Din844 end mill with parrallel shank standard Fraiser cylinariques deux tailles

Din844 End mill with parrallel shank dimensions, fraisers cylinariques deux tailles a queue cylindrique.

Form A mit glattem zylinderschaft

For more information: http://www.scharptools.com/Met-end844.htm

Din371: 1998-07 machine tap standard

Machine taps with reinforced shank or coarse pitch metric ISO-threads M1 to M10 and fine pitch metric ISO-threads M1x0.2 to M10x1.25

for more details: http://www.scharptools.com/Met-tap-371.htm

Be a smart buyer by understanding Chinese cultrure

Be a smart buyer by understanding Chinese cultrure !

Understanding Chinese culture will help you to know your Chinese partners better. 

Chinese express their idea and emotion in a circuitous way ,while western people are more logic and rational. 

For example  if you file a proposal that your chinese partners can not agree,  chinese will say”maybe talk about it later ".However,he will not discuss it anymore. He will not say no directly,which is a impolite way of expression in his thoughts. 

So please confirm again when you hear the words"maybe later","probably sometimes", which date? is it confirmed? . By double checking, you will get the true answers, which will avoid some mistakes and confusion.