E250M8

M Machine Tap Straight Flute
Material ID: 5975876

Straight flute tap, for ISO-Metric thread M8 with 1.25 mm pitch and 6H class of fit, dimensions according to DIN 376 standard with 6.0mm shank and 4.9mm square drive, powder metallurgical HSS-E with bright finish for 1.5xD through or blind hole threading in free machining and plain carbon steel

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Product Feature

Bright (uncoated)

Thread Form, Metric Coarse

DIN 376 – Thread Form Standard

DIN Thread Pitch Diameter Tolerance Zone (high basic pitch diameter)

Through or Blind Hole Application

1.5×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	E250M8
Product number (SAP)	86015807
EAN number	7320760087176
Thread diameter size (TDZ)	8
Thread pitch - millimeter (TP)	1.25 mm
Overall length - millimeter (OAL)	90 mm
Overall length - inch (OAL)	3.5433 inch
Threading length - millimeter (THL)	18 mm
Threading length - inch (THL)	0.7087 inch
Connection diameter - inch (DCON MS)	0.2362 inch
Connection diameter - millimeter (DCON MS)	6 mm
Flute count (NOF)	3
Clamping width - inch (WSC)	0.1929 inch
Clamping width - millimeter (WSC)	4.9 mm
Clamping Length - inch (LCS)	0.315 inch
Clamping Length - millimeter (LSC)	8 mm
Premachined hole diameter - inch (PHD)	0.2677 inch
Premachined hole diameter - millimeter (PHD)	6.8 mm
Gross weight - grams	25
ISO	E250M8
Ordering code ANSI	E250M8
Brand Name	Dormer Pramet

Cutting Conditions

P - Steel and cast steel (steels with alloy content ≤ 10% and a hardness of < 45HRC)

P1

P1 - Free machining steel (carbon steels with increased machinability)

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	Suitability	v_c
P1.1 - Free machining sulfurized carbon steel with a hardness of < 240HB	help_outline Primary use	11 m/min
P1.2 - Free machining sulfurized and phosphorized carbon steel with a hardness of < 180HB	help_outline Primary use	12 m/min
P1.3 - Free machining sulfurized/phosphorized and leaded carbon steel with a hardness of < 180HB	help_outline Primary use	12 m/min

P2

P2 - Plain carbon steel (steels comprised of mainly iron and carbon)

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	Suitability	v_c
P2.1 - Plain low carbon steel containing < 0.25%C with a hardness of < 180HB	help_outline Primary use	9 m/min
P2.2 - Plain medium carbon steel containing < 0.55%C with a hardness of < 240HB	help_outline Primary use	8 m/min
P2.3 - Plain high carbon steel containing > 0.55%C, with a hardness of < 300HB	help_outline Possible use	7 m/min

P3

P3 - Alloy steel (carbon steels with an alloying content ≤ 10%)

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	Suitability	v_c	f
P3.1 - Alloy steel with a hardness of < 180HB	help_outline Primary use	7 m/min
P3.2 - Alloy steel with a hardness of 180 - 260HB	help_outline Possible use	6 m/min

P4

P4 - Tool steel (special alloy steel for tools, dies and molds)

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	Suitability	v_c	f
P4.1 - Tool steel with a hardness of < 26HRC	help_outline Possible use	4 m/min

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 Possible use	13 m/min
K1.2 - Gray iron, ferritic-pearlitic or pearlitic with a hardness of 180 - 240HB	help_outline Possible use	10 m/min
K1.3 - Gray iron, pearlitic with a hardness of 240 - 280HB	help_outline Possible use	8 m/min

K2

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

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	Suitability	v_c	f
K2.1 - Malleable iron, ferritic with a hardness of < 160HB	help_outline Possible use	14 m/min
K2.2 - Malleable iron, ferritic or pearlitic with a hardness of 160 - 200HB	help_outline Possible use	11 m/min

K3

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

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	Suitability	v_c	f
K3.1 - Ductile (nodular/spheriodal) iron, ferritic with a hardness of < 180HB	help_outline Possible use	12 m/min
K3.2 - Ductile (nodular/spheriodal) iron, ferritic or pearlitic with a hardness of 180 - 220HB	help_outline Possible use	9 m/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	f
K4.1 - Austenitic cast iron with a hardness of < 180HB	help_outline Possible use	12 m/min
K4.2 - Austenitic cast iron with a hardness of 180 - 240HB	help_outline Possible use	9 m/min

K5

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

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	Suitability	v_c	f
K5.1 - Vermicular, compacted graphite iron with a hardness of < 180HB	help_outline Possible use	12 m/min
K5.2 - Vermicular, compacted graphite iron with a hardness of 180 - 220HB	help_outline Possible use	10 m/min

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

N1

N1 - Wrought aluminium

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	Suitability	v_c	f
N1.3 - Wrought aluminium alloys with a hardness of 100 - 150HB	help_outline Possible use	12 m/min

N2

N2 - Cast aluminium

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	Suitability	v_c
N2.1 - Cast aluminium alloys with a hardness of < 75HB	help_outline Possible use	15 m/min
N2.2 - Cast aluminium alloys with a hardness of 75 - 90HB	help_outline Possible use	14 m/min
N2.3 - Cast aluminium alloys with a hardness of 90 < 140HB	help_outline Possible use	11 m/min

N3

N3 - Copper or copper alloys

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	Suitability	v_c	f
N3.1 - Free-cutting copper-alloys materials with excellent machining properties	help_outline Possible use	21 m/min
N3.2 - Short-chip copper-alloys with good to moderate machining properties	help_outline Primary use	14 m/min

N4

N4 - Polymers(synthetic or semi-synthetic materials)

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	Suitability	v_c	f
N4.2 - Thermosetting polymers	help_outline Possible use	8 m/min

Related Parts

Used as replacement

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