E0311/2

UNF Machine Tap Spiral Point
Ordering number: 5973800

Spiral point tap with chamfer form B with a 3.5-5xP second lead, for Unified National Fine thread UNF 1/2" with 20 TPI and 2B class of fit, dimensions according to ISO 529 standard with 9.0mm shank and 7.1mm square drive, powder metallurgical HSS-E with steam tempered surface finish for 2.5xD through hole threading in general purpose applications

info

If you want to see the prices or stock information, please sign in or request access.

Contact Sales

location_on

Find a Distributor

Product Feature

Steam Tempered (Steam Oxide) Surface Treatment

Thread Form, Unified Fine

ISO 529 – Tap Standard

Internal Inch Thread Medium Class of Fit

Through Hole Application

2.5×D Usable Tool Depth to Diameter Ratio

High Speed Cobalt Powder Metal Tool Material

Plug Tap Chamfer (3.5 – 5 Pitch Lead)

Spiral Point Geometry

Right Hand Rotation / Cutting

Product Detail

Description	Value
Product name	E0311/2
EDP number	0569702
EAN number	7320760569702
Thread diameter size (TDZ)	1/2
Thread diameter - millimeter (TD)	12.7 mm
Threads per inch (TPI)	20
Overall length - millimeter (OAL)	89 mm
Overall length - inch (OAL)	3.5039 inch
Threading length - millimeter (THL)	22 mm
Threading length - inch (THL)	0.8661 inch
Connection diameter - inch (DCON MS)	0.3543 inch
Connection diameter - millimeter (DCON MS)	9 mm
Flute count (NOF)	3
Tolerance limit	H5
Clamping width - inch (WSC)	0.2795 inch
Clamping width - millimeter (WSC)	7.1 mm
Clamping Length - inch (LCS)	0.3937 inch
Clamping Length - millimeter (LSC)	10 mm
Premachined hole diameter - inch (PHD)	0.4528 inch
Premachined hole diameter - millimeter (PHD)	11.5 mm
Gross weight - grams	50.4
ANSI	E0311/2
ISO	E0311/2
Ordering code ANSI	E0311/2

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)

navigate_next

	Suitability	v_c	f
P1.1 - Free machining sulfurized carbon steel with a hardness of < 240HB	help_outline Possible use	72 ft/min

P2

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

navigate_next

	Suitability	v_c	f
P2.2 - Plain medium carbon steel containing < 0.55%C with a hardness of < 240HB	help_outline Possible use	52 ft/min
P2.3 - Plain high carbon steel containing > 0.55%C, with a hardness of < 300HB	help_outline Primary use	46 ft/min

P3

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

navigate_next

	Suitability	v_c	f
P3.2 - Alloy steel with a hardness of 180 - 260HB	help_outline Primary use	33 ft/min
P3.3 - Alloy steel with a hardness of 260 - 360HB	help_outline Possible use	30 ft/min

P4

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

navigate_next

	Suitability	v_c	f
P4.1 - Tool steel with a hardness of < 26HRC	help_outline Primary use	26 ft/min
P4.2 - Tool steel with a hardness of 26 - 39RC	help_outline Possible use	20 ft/min

M - Stainless steel (corrosion resistant steels with ≥ 11% chromium content)

M1

M1 - Ferritic stainless steel (straight chromium non-hardenable alloys)

navigate_next

	Suitability	v_c	f
M1.1 - Stainless steel, ferritic with a hardness of < 160HB	help_outline Possible use	33 ft/min
M1.2 - Stainless steel, ferritic with a hardness of 160 - 220HB	help_outline Possible use	26 ft/min

M2

M2 - Martensitic stainless steel (straight chromium hardenable alloys)

navigate_next

	Suitability	v_c	f
M2.1 - Stainless steel, martensitic with a hardness of < 200HB	help_outline Possible use	30 ft/min
M2.2 - Stainless steel, martensitic with a hardness of 200 - 280HB	help_outline Possible use	23 ft/min

M3

M3 - Austenitic stainless steel (chromium-nickel and chromium-nickel-manganese alloys)

navigate_next

	Suitability	v_c
M3.1 - Stainless steel, austenitic with a hardness of < 200HB	help_outline Possible use	23 ft/min
M3.2 - Stainless steel, austenitic with a hardness of 200 - 260HB	help_outline Possible use	20 ft/min
M3.3 - Stainless steel, austenitic with a hardness of 260 - 300HB	help_outline Possible use	16 ft/min

M4

M4 - Super-austenitic, Duplex or Precipitation Hardening stainless steel (austenitic alloys with > 20% Ni, austenitic-ferritic microstructure or precipitation hardened)

navigate_next

	Suitability	v_c	f
M4.1 - Stainless steel, austenitic-ferritic or super-austenitic with a hardness of < 300HB	help_outline Possible use	13 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)

navigate_next

	Suitability	v_c
K1.1 - Gray iron, ferritic or ferritic-pearlitic with a hardness of < 180HB	help_outline Possible use	43 ft/min
K1.2 - Gray iron, ferritic-pearlitic or pearlitic with a hardness of 180 - 240HB	help_outline Possible use	33 ft/min
K1.3 - Gray iron, pearlitic with a hardness of 240 - 280HB	help_outline Possible use	23 ft/min

K2

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

navigate_next

	Suitability	v_c	f
K2.1 - Malleable iron, ferritic with a hardness of < 160HB	help_outline Possible use	52 ft/min
K2.2 - Malleable iron, ferritic or pearlitic with a hardness of 160 - 200HB	help_outline Possible use	43 ft/min

K3

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

navigate_next

	Suitability	v_c	f
K3.1 - Ductile (nodular/spheriodal) iron, ferritic with a hardness of < 180HB	help_outline Possible use	46 ft/min
K3.2 - Ductile (nodular/spheriodal) iron, ferritic or pearlitic with a hardness of 180 - 220HB	help_outline Possible use	33 ft/min

K4

K4 - Austenitic or austempered ductile iron (Ni-Resist/ADI) (iron-carbon alloy castings with an austenitic or ausferrite microstructure)

navigate_next

	Suitability	v_c	f
K4.1 - Austenitic cast iron with a hardness of < 180HB	help_outline Possible use	43 ft/min
K4.2 - Austenitic cast iron with a hardness of 180 - 240HB	help_outline Possible use	30 ft/min

K5

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

navigate_next

	Suitability	v_c	f
K5.1 - Vermicular, compacted graphite iron with a hardness of < 180HB	help_outline Possible use	49 ft/min
K5.2 - Vermicular, compacted graphite iron with a hardness of 180 - 220HB	help_outline Possible use	36 ft/min

Related Parts

Used as replacement

Material application

Select

E0311/2

Product Feature

Product Detail

Cutting Conditions

P1

P2

P3

P4

M1

M2

M3

M4

K1

K2

K3

K4

K5

Related Parts

E030