EX403/8

G(BSP) Machine Tap Spiral Flute 45°
Ordering number: 5974225

Spiral flute tap with chamfer form C with a 2-3xP plug lead, for British Standard Pipe thread G 3/8" with 19 TPI and Normal class of fit, dimensions according to DIN 5156 standard with 12.0mm shank and 9.0mm square drive, powder metallurgical HSS-E with bright finish and 45° helix angle for 2.5xD blind hole threading in free machining and plain carbon steel and wrought or cast aluminium

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Product Feature

Bright (uncoated)

Thread Form, British Standard Pipe (BSP)

DIN 5156 – Thread Form Standard

Normal Fit Class for Pipe Thread

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

45° Helix Angle (Flute)

Right Hand Rotation / Cutting

Product Detail

Description	Value
Product name	EX403/8
EDP number	0168561
EAN number	7320760168561
Thread diameter size (TDZ)	3/8
Thread diameter - millimeter (TD)	16.662 mm
Threads per inch (TPI)	19
Overall length - millimeter (OAL)	100 mm
Overall length - inch (OAL)	3.937 inch
Threading length - millimeter (THL)	15 mm
Threading length - inch (THL)	0.5906 inch
Connection diameter - inch (DCON MS)	0.4724 inch
Connection diameter - millimeter (DCON MS)	12 mm
Flute count (NOF)	4
Clamping width - inch (WSC)	0.3543 inch
Clamping width - millimeter (WSC)	9 mm
Clamping Length - inch (LCS)	0.4724 inch
Clamping Length - millimeter (LSC)	12 mm
Premachined hole diameter - inch (PHD)	0.6004 inch
Premachined hole diameter - millimeter (PHD)	15.25 mm
Gross weight - grams	84
ANSI	EX403/8
ISO	EX403/8
Ordering code ANSI	EX403/8

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	69 ft/min
P1.2 - Free machining sulfurized and phosphorized carbon steel with a hardness of < 180HB	help_outline Primary use	75 ft/min
P1.3 - Free machining sulfurized/phosphorized and leaded carbon steel with a hardness of < 180HB	help_outline Primary use	79 ft/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	56 ft/min
P2.2 - Plain medium carbon steel containing < 0.55%C with a hardness of < 240HB	help_outline Primary use	49 ft/min
P2.3 - Plain high carbon steel containing > 0.55%C, with a hardness of < 300HB	help_outline Possible use	43 ft/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	39 ft/min
P3.2 - Alloy steel with a hardness of 180 - 260HB	help_outline Possible use	30 ft/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	23 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 Primary use	43 ft/min
N1.2 - Wrought aluminium alloys with a hardness of 60 - 100HB	help_outline Primary use	30 ft/min
N1.3 - Wrought aluminium alloys with a hardness of 100 - 150HB	help_outline Primary use	20 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	89 ft/min
N2.2 - Cast aluminium alloys with a hardness of 75 - 90HB	help_outline Primary use	79 ft/min
N2.3 - Cast aluminium alloys with a hardness of 90 < 140HB	help_outline Primary use	56 ft/min