E0232-56

UNC Machine Tap Spiral Flute 45°
Ordering number: 5974478

Spiral flute tap with chamfer form C with a 2-3xP plug lead, for Unified National Coarse thread UNC 2 with 56 TPI and 2B class of fit, dimensions according to ISO 529 standard with 2.8mm shank and 2.24mm square drive, powder metallurgical HSS-E with steam tempered surface finish and 45° helix angle for 2.5xD blind hole threading in general purpose applications

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Product Feature

Steam Tempered (Steam Oxide) Surface Treatment

Thread Form, Unified Coarse

ISO 529 – Tap Standard

Internal Inch Thread Medium Class of Fit

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	E0232-56
EDP number	0010440
EAN number	7320760010440
Thread diameter size (TDZ)	2
Thread diameter - millimeter (TD)	2.184 mm
Threads per inch (TPI)	56
Overall length - millimeter (OAL)	44.5 mm
Overall length - inch (OAL)	1.752 inch
Threading length - millimeter (THL)	9.5 mm
Threading length - inch (THL)	0.374 inch
Connection diameter - inch (DCON MS)	0.1102 inch
Connection diameter - millimeter (DCON MS)	2.8 mm
Flute count (NOF)	2
Tolerance limit	H2
Usable Length - inch (LU)	0.374 inch
Usable Length - millimeter (LU)	9.5 mm
Clamping width - inch (WSC)	0.0882 inch
Clamping width - millimeter (WSC)	2.24 mm
Clamping Length - inch (LCS)	0.1969 inch
Clamping Length - millimeter (LSC)	5 mm
Premachined hole diameter - inch (PHD)	0.0728 inch
Premachined hole diameter - millimeter (PHD)	1.85 mm
Gross weight - grams	4
ANSI	E0232-56
ISO	E0232-56
Ordering code ANSI	E0232-56

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	f
P1.1 - Free machining sulfurized carbon steel with a hardness of < 240HB	help_outline Possible use	69 ft/min

P2

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

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	Suitability	v_c	f
P2.2 - Plain medium carbon steel containing < 0.55%C with a hardness of < 240HB	help_outline Possible use	49 ft/min
P2.3 - Plain high carbon steel containing > 0.55%C, with a hardness of < 300HB	help_outline Primary use	43 ft/min

P3

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

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	Suitability	v_c	f
P3.2 - Alloy steel with a hardness of 180 - 260HB	help_outline Primary use	30 ft/min
P3.3 - Alloy steel with a hardness of 260 - 360HB	help_outline Possible use	26 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	23 ft/min
P4.2 - Tool steel with a hardness of 26 - 39RC	help_outline Possible use	16 ft/min

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

M1

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

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	Suitability	v_c	f
M1.1 - Stainless steel, ferritic with a hardness of < 160HB	help_outline Possible use	26 ft/min
M1.2 - Stainless steel, ferritic with a hardness of 160 - 220HB	help_outline Possible use	20 ft/min

M2

M2 - Martensitic stainless steel (straight chromium hardenable alloys)

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	Suitability	v_c	f
M2.1 - Stainless steel, martensitic with a hardness of < 200HB	help_outline Possible use	23 ft/min
M2.2 - Stainless steel, martensitic with a hardness of 200 - 280HB	help_outline Possible use	16 ft/min

M3

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

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	Suitability	v_c
M3.1 - Stainless steel, austenitic with a hardness of < 200HB	help_outline Possible use	16 ft/min
M3.2 - Stainless steel, austenitic with a hardness of 200 - 260HB	help_outline Possible use	13 ft/min
M3.3 - Stainless steel, austenitic with a hardness of 260 - 300HB	help_outline Possible use	10 ft/min

M4

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

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	Suitability	v_c	f
M4.1 - Stainless steel, austenitic-ferritic or super-austenitic with a hardness of < 300HB	help_outline Possible use	10 ft/min