15441/8X27

1544 NPT Pipe Tap
Ordering number: 6007175

Straight flute tap with a 2-3xP plug lead, for National Pipe Taper thread NPT 1/8" with 27 TPI and Normal class of fit, dimensions according to ~ANSI B94.9 standard with 0.4380" shank and 0.3280" square drive, HSS with nitride surface finish for 1.5xD through or blind hole threading in alloy steel

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Product Feature

Dormer Pramet

Thread Form, American National Pipe Taper

ANSI B94.9 – Tap Standard

Normal Fit Class for Pipe Thread

1.5×D Usable Tool Depth to Diameter Ratio

High Speed Steel Tool Material

Straight Flute Geometry

Right Hand Rotation / Cutting

Product Detail

Description	Value
Product name	15441/8X27
EDP number	1011761
EAN number	698464020506
Thread diameter size (TDZ)	1/8
Threads per inch (TPI)	27
Overall length - millimeter (OAL)	53.98 mm
Overall length - inch (OAL)	2.125 inch
Overall length - fractional inch (OAL)	2.1/8
Threading length - millimeter (THL)	19.05 mm
Threading length - inch (THL)	0.75 inch
Threading length - fractional inch (THL)	3/4
Connection diameter - inch (DCON MS)	0.438 inch
Connection diameter - millimeter (DCON MS)	11.13 mm
Flute count (NOF)	4
Clamping width - inch (WSC)	0.328 inch
Clamping width - millimeter (WSC)	8.33 mm
Clamping Length - fractional inch (LCS)	3/8
Clamping Length - inch (LCS)	0.375 inch
Clamping Length - millimeter (LSC)	9.53 mm
Gross weight - grams	36
ANSI	15441/8X27
ISO	15441/8X27
Ordering code ANSI	15441/8X27

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	26 ft/min
P1.2 - Free machining sulfurized and phosphorized carbon steel with a hardness of < 180HB	help_outline Possible use	30 ft/min
P1.3 - Free machining sulfurized/phosphorized and leaded carbon steel with a hardness of < 180HB	help_outline Possible use	30 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 Possible use	23 ft/min
P2.2 - Plain medium carbon steel containing < 0.55%C with a hardness of < 240HB	help_outline Primary use	20 ft/min
P2.3 - Plain high carbon steel containing > 0.55%C, with a hardness of < 300HB	help_outline Possible use	16 ft/min

P3

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

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	Suitability	v_c
P3.1 - Alloy steel with a hardness of < 180HB	help_outline Primary use	13 ft/min
P3.2 - Alloy steel with a hardness of 180 - 260HB	help_outline Primary use	13 ft/min
P3.3 - Alloy steel with a hardness of 260 - 360HB	help_outline Possible use	10 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 Primary use	10 ft/min
P4.2 - Tool steel with a hardness of 26 - 39RC	help_outline Possible use	7 ft/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	20 ft/min
K1.2 - Gray iron, ferritic-pearlitic or pearlitic with a hardness of 180 - 240HB	help_outline Possible use	13 ft/min
K1.3 - Gray iron, pearlitic with a hardness of 240 - 280HB	help_outline Possible use	10 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 Possible use	23 ft/min
K2.2 - Malleable iron, ferritic or pearlitic with a hardness of 160 - 200HB	help_outline Possible use	20 ft/min
K2.3 - Malleable iron, pearlitic with a hardness of 200 - 240HB	help_outline Possible use	16 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 Possible use	23 ft/min
K3.2 - Ductile (nodular/spheriodal) iron, ferritic or pearlitic with a hardness of 180 - 220HB	help_outline Possible use	16 ft/min
K3.3 - Ductile (nodular/spheriodal) iron, pearlitic with a hardness of 220 - 260HB	help_outline Possible use	13 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 Possible use	20 ft/min
K4.2 - Austenitic cast iron with a hardness of 180 - 240HB	help_outline Possible use	16 ft/min
K4.3 - Austempered ductile iron with a hardness of 240 - 280HB	help_outline Possible use	10 ft/min
K4.4 - Austempered ductile iron with a hardness of 280 - 320HB	help_outline Possible use	10 ft/min
K4.5 - Austempered ductile iron with a hardness of 320 - 360HB	help_outline Possible use	7 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 Possible use	23 ft/min
K5.2 - Vermicular, compacted graphite iron with a hardness of 180 - 220HB	help_outline Possible use	16 ft/min
K5.3 - Vermicular, compacted graphite iron with a hardness of 220 - 260HB	help_outline Possible use	13 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
N2.1 - Cast aluminium alloys with a hardness of < 75HB	help_outline Possible use	56 ft/min
N2.2 - Cast aluminium alloys with a hardness of 75 - 90HB	help_outline Possible use	49 ft/min
N2.3 - Cast aluminium alloys with a hardness of 90 < 140HB	help_outline Possible use	36 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	62 ft/min
N3.2 - Short-chip copper-alloys with good to moderate machining properties	help_outline Possible use	36 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	13 ft/min