E252M20

M Machine Tap Straight Flute, White Shark
Ordering number: 5975347

Straight flute tap White Shark with chamfer form C with a 2-3xP plug lead, for ISO-Metric thread M20 with 2.50 mm pitch and 6HX class of fit, dimensions according to DIN 376 standard with 16.0mm shank and 12.0mm square drive, powder metallurgical HSS-E with steam tempered surface finish for 2xD through or blind hole threading in gray, malleable, ductile and compacted graphite cast-iron and polymers

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Product Feature

Steam Tempered (Steam Oxide) Surface Treatment

Thread Form, Metric Coarse

DIN 376 – Thread Form Standard

DIN Thread Pitch Diameter Tolerance Zone (with increased pitch diameter)

Through or Blind Hole Application

2×D Usable Tool Depth to Diameter Ratio

High Speed Cobalt Powder Metal Tool Material

Semi-Bottoming Tap Chamfer (2 – 3 Pitch Lead)

Straight Flute Geometry

Right Hand Rotation / Cutting

Product Detail

Description	Value
Product name	E252M20
EDP number	0087312
EAN number	7320760087312
Product Line	SHARK
Thread diameter size (TDZ)	20
Thread pitch - millimeter (TP)	2.5 mm
Overall length - millimeter (OAL)	140 mm
Overall length - inch (OAL)	5.5118 inch
Threading length - millimeter (THL)	30 mm
Threading length - inch (THL)	1.1811 inch
Connection diameter - inch (DCON MS)	0.6299 inch
Connection diameter - millimeter (DCON MS)	16 mm
Flute count (NOF)	4
Tolerance limit	D7
Clamping width - inch (WSC)	0.4724 inch
Clamping width - millimeter (WSC)	12 mm
Clamping Length - inch (LCS)	0.5906 inch
Clamping Length - millimeter (LSC)	15 mm
Premachined hole diameter - inch (PHD)	0.689 inch
Premachined hole diameter - millimeter (PHD)	17.5 mm
Gross weight - grams	205.6
ANSI	E252M20
ISO	E252M20
Ordering code ANSI	E252M20

Cutting Conditions

K - Cast Iron (castings of iron and carbon alloys with > 2% carbon content)

K1

K1 - Gray iron (GG) (iron-carbon castings with a lamellar graphite microstructure)

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	Suitability	v_c
K1.1 - Gray iron, ferritic or ferritic-pearlitic with a hardness of < 180HB	help_outline Primary use	49 ft/min
K1.2 - Gray iron, ferritic-pearlitic or pearlitic with a hardness of 180 - 240HB	help_outline Primary use	36 ft/min
K1.3 - Gray iron, pearlitic with a hardness of 240 - 280HB	help_outline Primary use	26 ft/min

K2

K2 - Malleable iron (GTS/GTW) (heat-treated iron-carbon castings with a graphite-free microstructure)

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	Suitability	v_c
K2.1 - Malleable iron, ferritic with a hardness of < 160HB	help_outline Primary use	59 ft/min
K2.2 - Malleable iron, ferritic or pearlitic with a hardness of 160 - 200HB	help_outline Primary use	49 ft/min
K2.3 - Malleable iron, pearlitic with a hardness of 200 - 240HB	help_outline Possible use	39 ft/min

K3

K3 - Ductile iron (GGG) (iron-carbon castings with a nodular graphite microsturcture)

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	Suitability	v_c
K3.1 - Ductile (nodular/spheriodal) iron, ferritic with a hardness of < 180HB	help_outline Primary use	52 ft/min
K3.2 - Ductile (nodular/spheriodal) iron, ferritic or pearlitic with a hardness of 180 - 220HB	help_outline Primary use	39 ft/min
K3.3 - Ductile (nodular/spheriodal) iron, pearlitic with a hardness of 220 - 260HB	help_outline Possible use	33 ft/min

K4

K4 - Austenitic or austempered ductile iron (Ni-Resist/ADI) (iron-carbon alloy castings with an austenitic or ausferrite microstructure)

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	Suitability	v_c
K4.1 - Austenitic cast iron with a hardness of < 180HB	help_outline Primary use	49 ft/min
K4.2 - Austenitic cast iron with a hardness of 180 - 240HB	help_outline Primary use	36 ft/min
K4.3 - Austempered ductile iron with a hardness of 240 - 280HB	help_outline Possible use	26 ft/min
K4.4 - Austempered ductile iron with a hardness of 280 - 320HB	help_outline Possible use	23 ft/min
K4.5 - Austempered ductile iron with a hardness of 320 - 360HB	help_outline Possible use	20 ft/min

K5

K5 - Compacted graphite iron (CGI) (iron-carbon castings with a vermicular graphite structure)

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	Suitability	v_c
K5.1 - Vermicular, compacted graphite iron with a hardness of < 180HB	help_outline Primary use	56 ft/min
K5.2 - Vermicular, compacted graphite iron with a hardness of 180 - 220HB	help_outline Primary use	43 ft/min
K5.3 - Vermicular, compacted graphite iron with a hardness of 220 - 260HB	help_outline Possible use	33 ft/min

N - Non-ferrous metals (metals including alloys without an appreciable amount of iron)

N2

N2 - Cast aluminium

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	Suitability	v_c	f
N2.3 - Cast aluminium alloys with a hardness of 90 < 140HB	help_outline Possible use	49 ft/min

N3

N3 - Copper or copper alloys

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	Suitability	v_c	f
N3.2 - Short-chip copper-alloys with good to moderate machining properties	help_outline Possible use	66 ft/min

N4

N4 - Polymers(synthetic or semi-synthetic materials)

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	Suitability	v_c	f
N4.2 - Thermosetting polymers	help_outline Primary use	33 ft/min