E6531/4

HSS Drill-Tap Combination Tool with 27° Spiral Flute, NPT, ANSI Standard
Ordering number: 5978395

Combination drill-tap with a 27° spiral flute, for National Pipe Taper thread NPT 1/4" with 18 TPI and Normal class of fit, dimensions according to ANSI standard with 0.5620" shank and 0.5620" square drive, HSS with bright finish and 27° helix angle for 1.5xD through or blind hole threading in free machining steel

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

Bright (uncoated)

Thread Form, American National Pipe Taper

ANSI – Tap Standards

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

Spiral Flute Geometry

27° Helix Angle (Flute)

Right Hand Rotation / Cutting

Product Detail

Description	Value
EAN number	7320760297278
EDP number	0297278
Product name	E6531/4
Ordering code ANSI	E6531/4
Gross weight - grams	65.7
Thread diameter size (TDZ)	1/4
Threads per inch (TPI)	18
Thread diameter - inch (TD)	0.4331 inch
Overall length - fractional inch (OAL)	3.5/16
Usable Length - fractional inch (LU)	1.1/16
Connection diameter - inch (DCON MS)	0.562 inch
Clamping width - inch (WSC)	0.421 inch
Flute count (NOF)	4
ANSI	E6531/4
ISO	E6531/4

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
P1.1 - Free machining sulfurized carbon steel with a hardness of < 240HB	help_outline Primary use	59 ft/min
P1.2 - Free machining sulfurized and phosphorized carbon steel with a hardness of < 180HB	help_outline Primary use	66 ft/min
P1.3 - Free machining sulfurized/phosphorized and leaded carbon steel with a hardness of < 180HB	help_outline Primary use	72 ft/min

P2

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

navigate_next

	Suitability	v_c	f
P2.1 - Plain low carbon steel containing < 0.25%C with a hardness of < 180HB	help_outline Primary use	66 ft/min
P2.2 - Plain medium carbon steel containing < 0.55%C with a hardness of < 240HB	help_outline Possible use	59 ft/min

P3

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

navigate_next

	Suitability	v_c	f
P3.1 - Alloy steel with a hardness of < 180HB	help_outline Possible use	49 ft/min
P3.2 - Alloy steel with a hardness of 180 - 260HB	help_outline Possible use	39 ft/min

N - Non-ferrous metals (metals including alloys without an appreciable amount of iron)

N1

N1 - Wrought aluminium

navigate_next

	Suitability	v_c	f
N1.2 - Wrought aluminium alloys with a hardness of 60 - 100HB	help_outline Possible use	46 ft/min
N1.3 - Wrought aluminium alloys with a hardness of 100 - 150HB	help_outline Possible use	30 ft/min

N3

N3 - Copper or copper alloys

navigate_next

	Suitability	v_c	f
N3.1 - Free-cutting copper-alloys materials with excellent machining properties	help_outline Possible use	66 ft/min
N3.2 - Short-chip copper-alloys with good to moderate machining properties	help_outline Possible use	49 ft/min

N4

N4 - Polymers(synthetic or semi-synthetic materials)

navigate_next

	Suitability	v_c	f
N4.1 - Thermoplastic polymers	help_outline Possible use	82 ft/min