E474M8

M Machine Tap Spiral Flute 35°, Green Shark
Ordering number: 6554552

Spiral flute tap Green Shark with chamfer form C with a 2-3xP plug lead, for ISO-Metric thread M8 with 1.25 mm pitch and 6H class of fit, dimensions according to DIN 371 standard with 8.0mm shank and 6.2mm square drive, powder metallurgical HSS-E with Super-B coating and 35° helix angle for 2.5xD blind hole threading in cast aluminium

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Product Feature

Special TiAlN Coating (+ WC/C)

Thread Form, Metric Coarse

DIN 371 – Thread Form Standard

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

Blind Hole Application

2.5×D Usable Tool Depth to Diameter Ratio

High Speed Cobalt Powder Metal Tool Material

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

Spiral Flute Geometry

35° Helix Angle (Flute)

Right Hand Rotation / Cutting

Product Detail

Description	Value
Product name	E474M8
EDP number	46554552
EAN number	7320760674932
Product Line	SHARK
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)	0.315 inch
Connection diameter - millimeter (DCON MS)	8 mm
Flute count (NOF)	2
Usable Length - inch (LU)	1.378 inch
Usable Length - millimeter (LU)	35 mm
Clamping width - inch (WSC)	0.2441 inch
Clamping width - millimeter (WSC)	6.2 mm
Clamping Length - inch (LCS)	0.3543 inch
Clamping Length - millimeter (LSC)	9 mm
Premachined hole diameter - inch (PHD)	0.2677 inch
Premachined hole diameter - millimeter (PHD)	6.8 mm
Gross weight - grams	32.7
ANSI	E474M8
ISO	E474M8
Ordering code ANSI	E474M8

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 Possible use	105 ft/min
P1.2 - Free machining sulfurized and phosphorized carbon steel with a hardness of < 180HB	help_outline Possible use	118 ft/min
P1.3 - Free machining sulfurized/phosphorized and leaded carbon steel with a hardness of < 180HB	help_outline Possible use	125 ft/min

P2

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

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	Suitability	v_c	f
P2.1 - Plain low carbon steel containing < 0.25%C with a hardness of < 180HB	help_outline Possible use	89 ft/min
P2.2 - Plain medium carbon steel containing < 0.55%C with a hardness of < 240HB	help_outline Possible use	72 ft/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
N1.1 - Pure aluminium and wrought aluminium alloys with a hardness of < 60HB	help_outline Possible use	108 ft/min
N1.2 - Wrought aluminium alloys with a hardness of 60 - 100HB	help_outline Possible use	79 ft/min
N1.3 - Wrought aluminium alloys with a hardness of 100 - 150HB	help_outline Primary use	56 ft/min

N2

N2 - Cast aluminium

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	Suitability	v_c
N2.1 - Cast aluminium alloys with a hardness of < 75HB	help_outline Primary use	144 ft/min
N2.2 - Cast aluminium alloys with a hardness of 75 - 90HB	help_outline Primary use	131 ft/min
N2.3 - Cast aluminium alloys with a hardness of 90 < 140HB	help_outline Primary use	92 ft/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	236 ft/min
N3.2 - Short-chip copper-alloys with good to moderate machining properties	help_outline Primary use	141 ft/min

N4

N4 - Polymers(synthetic or semi-synthetic materials)

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	Suitability	v_c	f
N4.1 - Thermoplastic polymers	help_outline Possible use	92 ft/min