E7091/8

NPSF Machine Tap Straight Flute
Ordering number: 5977590

Straight flute tap with chamfer form C with a 2-3xP plug lead, for (Dryseal) National Pipe Straight thread for Fuel lines NPSF 1/8" with 27 TPI and Normal class of fit, dimensions according to ~ANSI B94.9 standard with 11.1mm shank and 8.3mm square drive, HSS with bright finish for 1.5xD through or blind hole threading in free machining, plain carbon and alloy steel and copper or copper alloys

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Product Feature

Bright (uncoated)

Thread Form, American National Pipe Straight Fuel (Dryseal)

ANSI B94.9 – Tap Standard

Normal Fit Class for Pipe Thread

Through or Blind Hole Application

1.5×D Usable Tool Depth to Diameter Ratio

High Speed Steel Tool Material

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

Straight Flute Geometry

Right Hand Rotation / Cutting

Product Detail

Description	Value
Product name	E7091/8
EDP number	0099803
EAN number	7320760099803
Thread diameter size (TDZ)	1/8
Thread diameter - millimeter (TD)	10.29 mm
Threads per inch (TPI)	27
Overall length - millimeter (OAL)	70 mm
Overall length - inch (OAL)	2.7559 inch
Threading length - millimeter (THL)	19 mm
Threading length - inch (THL)	0.748 inch
Connection diameter - inch (DCON MS)	0.437 inch
Connection diameter - millimeter (DCON MS)	11.1 mm
Flute count (NOF)	4
Usable Length - inch (LU)	0.748 inch
Usable Length - millimeter (LU)	19 mm
Clamping width - inch (WSC)	0.3268 inch
Clamping width - millimeter (WSC)	8.3 mm
Clamping Length - inch (LCS)	0.3937 inch
Clamping Length - millimeter (LSC)	10 mm
Premachined hole diameter - inch (PHD)	0.3425 inch
Premachined hole diameter - millimeter (PHD)	8.7 mm
Gross weight - grams	45.6
ANSI	E7091/8
ISO	E7091/8
Ordering code ANSI	E7091/8

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	23 ft/min
P1.2 - Free machining sulfurized and phosphorized carbon steel with a hardness of < 180HB	help_outline Primary use	23 ft/min
P1.3 - Free machining sulfurized/phosphorized and leaded carbon steel with a hardness of < 180HB	help_outline Primary use	26 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	20 ft/min
P2.2 - Plain medium carbon steel containing < 0.55%C with a hardness of < 240HB	help_outline Primary use	16 ft/min
P2.3 - Plain high carbon steel containing > 0.55%C, with a hardness of < 300HB	help_outline Possible use	13 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	13 ft/min
P3.2 - Alloy steel with a hardness of 180 - 260HB	help_outline Possible use	13 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	10 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	f
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

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	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

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	20 ft/min
K4.2 - Austenitic cast iron with a hardness of 180 - 240HB	help_outline Possible use	16 ft/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	23 ft/min
K5.2 - Vermicular, compacted graphite iron with a hardness of 180 - 220HB	help_outline Possible use	16 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	f
N1.3 - Wrought aluminium alloys with a hardness of 100 - 150HB	help_outline Possible use	26 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 Possible use	36 ft/min
N2.2 - Cast aluminium alloys with a hardness of 75 - 90HB	help_outline Possible use	33 ft/min
N2.3 - Cast aluminium alloys with a hardness of 90 < 140HB	help_outline Possible use	23 ft/min

N3

N3 - Copper or copper alloys

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	Suitability	v_c
N3.1 - Free-cutting copper-alloys materials with excellent machining properties	help_outline Primary use	56 ft/min
N3.2 - Short-chip copper-alloys with good to moderate machining properties	help_outline Primary use	33 ft/min
N3.3 - Electrolytic copper and long-chip copper-alloys with moderate to poor machining properties	help_outline Possible use	16 ft/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	16 ft/min
N4.3 - Reinforced polymers or composites	help_outline Possible use	10 ft/min

Related Parts

Used as replacement

Material application

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E7091/8

Product Feature

Product Detail

Cutting Conditions

P1

P2

P3

P4

K1

K2

K3

K4

K5

N1

N2

N3

N4

Related Parts

1592(NPSF)