A221N1

Centre Drill - 60°
Ordering number: 5969075

Centre drill (combined drill and countersink) with 60° straight conical form, double ended and cylindrical body, size 1 with 3/64" drill diameter, a body diameter of 1/8" and an overall length of 1.1/4", according to ANSI standard to produce form A centre holes, cobalt based HSS-E and bright finish for machining free machining, plain carbon and alloy steel and grey cast-iron

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)

High Speed Cobalt Steel Tool Material

ANSI – Tap Standards

1.5×D Usable Tool Depth to Diameter Ratio

60° Countersink Centre Drill

Cylindrical Shank / Straight Shank

Right Hand Rotation / Cutting

Drill Point 118°

Product Detail

Description	Value
EAN number	7320760241868
EDP number	0241868
Product name	A221N1
Ordering code ANSI	A221N1
Gross weight - grams	4.2
Step included angle (STA)	60
Connection diameter - fractional inch (DCON MS)	1/8
Connection diameter - inch (DCON MS)	0.125 inch
Connection diameter - millimeter (DCON MS)	3.18 mm
Cutting diameter - fractional inch (DC)	3/64
Cutting diameter - inch (DC)	0.0469 inch
Cutting diameter - millimeter (DC)	1.19 mm
Overall length - fractional inch (OAL)	1.1/4
Overall length - inch (OAL)	1.25 inch
Overall length - millimeter (OAL)	31.75 mm
ANSI	A221N1
ISO	A221N1
Length chip flute - fractional inch (LCF)	3/64

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 Primary use	108 ft/min	0.0012 inch/rev
P1.2 - Free machining sulfurized and phosphorized carbon steel with a hardness of < 180HB	help_outline Primary use	121 ft/min	0.0012 inch/rev
P1.3 - Free machining sulfurized/phosphorized and leaded carbon steel with a hardness of < 180HB	help_outline Primary use	125 ft/min	0.0012 inch/rev

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	92 ft/min	0.0012 inch/rev
P2.2 - Plain medium carbon steel containing < 0.55%C with a hardness of < 240HB	help_outline Primary use	82 ft/min	0.001 inch/rev
P2.3 - Plain high carbon steel containing > 0.55%C, with a hardness of < 300HB	help_outline Possible use	72 ft/min	0.0009 inch/rev

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 Primary use	62 ft/min	0.0009 inch/rev
P3.2 - Alloy steel with a hardness of 180 - 260HB	help_outline Primary use	49 ft/min	0.0009 inch/rev
P3.3 - Alloy steel with a hardness of 260 - 360HB	help_outline Possible use	43 ft/min	0.0009 inch/rev

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	36 ft/min	0.0009 inch/rev
P4.2 - Tool steel with a hardness of 26 - 39RC	help_outline Possible use	33 ft/min	0.0009 inch/rev
P4.3 - Tool steel with a hardness of 39 - 45HRC	help_outline Possible use	26 ft/min	0.0008 inch/rev

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	69 ft/min	0.0009 inch/rev
M1.2 - Stainless steel, ferritic with a hardness of 160 - 220HB	help_outline Possible use	56 ft/min	0.0009 inch/rev

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	59 ft/min	0.0009 inch/rev
M2.2 - Stainless steel, martensitic with a hardness of 200 - 280HB	help_outline Possible use	49 ft/min	0.0009 inch/rev

M3

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

navigate_next

	Suitability	v_c	f
M3.1 - Stainless steel, austenitic with a hardness of < 200HB	help_outline Possible use	30 ft/min	0.001 inch/rev
M3.2 - Stainless steel, austenitic with a hardness of 200 - 260HB	help_outline Possible use	26 ft/min	0.001 inch/rev
M3.3 - Stainless steel, austenitic with a hardness of 260 - 300HB	help_outline Possible use	23 ft/min	0.001 inch/rev

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	33 ft/min	0.0007 inch/rev

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	f
K1.1 - Gray iron, ferritic or ferritic-pearlitic with a hardness of < 180HB	help_outline Primary use	98 ft/min	0.0012 inch/rev
K1.2 - Gray iron, ferritic-pearlitic or pearlitic with a hardness of 180 - 240HB	help_outline Primary use	72 ft/min	0.0009 inch/rev
K1.3 - Gray iron, pearlitic with a hardness of 240 - 280HB	help_outline Primary use	56 ft/min	0.0009 inch/rev

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	82 ft/min	0.0009 inch/rev
K2.2 - Malleable iron, ferritic or pearlitic with a hardness of 160 - 200HB	help_outline Possible use	66 ft/min	0.0009 inch/rev
K2.3 - Malleable iron, pearlitic with a hardness of 200 - 240HB	help_outline Possible use	52 ft/min	0.0009 inch/rev

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	72 ft/min	0.0009 inch/rev
K3.2 - Ductile (nodular/spheriodal) iron, ferritic or pearlitic with a hardness of 180 - 220HB	help_outline Possible use	56 ft/min	0.0009 inch/rev
K3.3 - Ductile (nodular/spheriodal) iron, pearlitic with a hardness of 220 - 260HB	help_outline Possible use	43 ft/min	0.0009 inch/rev

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	66 ft/min	0.0009 inch/rev
K4.2 - Austenitic cast iron with a hardness of 180 - 240HB	help_outline Possible use	49 ft/min	0.0009 inch/rev
K4.3 - Austempered ductile iron with a hardness of 240 - 280HB	help_outline Possible use	36 ft/min	0.0009 inch/rev
K4.4 - Austempered ductile iron with a hardness of 280 - 320HB	help_outline Possible use	33 ft/min	0.0009 inch/rev
K4.5 - Austempered ductile iron with a hardness of 320 - 360HB	help_outline Possible use	26 ft/min	0.0009 inch/rev

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	75 ft/min	0.0009 inch/rev
K5.2 - Vermicular, compacted graphite iron with a hardness of 180 - 220HB	help_outline Possible use	56 ft/min	0.0009 inch/rev
K5.3 - Vermicular, compacted graphite iron with a hardness of 220 - 260HB	help_outline Possible use	43 ft/min	0.0009 inch/rev

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

N1

N1 - Wrought aluminium

navigate_next

	Suitability	v_c	f
N1.1 - Pure aluminium and wrought aluminium alloys with a hardness of < 60HB	help_outline Possible use	108 ft/min	0.0014 inch/rev
N1.2 - Wrought aluminium alloys with a hardness of 60 - 100HB	help_outline Possible use	82 ft/min	0.0014 inch/rev
N1.3 - Wrought aluminium alloys with a hardness of 100 - 150HB	help_outline Possible use	56 ft/min	0.0012 inch/rev

N2

N2 - Cast aluminium

navigate_next

	Suitability	v_c	f
N2.1 - Cast aluminium alloys with a hardness of < 75HB	help_outline Possible use	138 ft/min	0.0011 inch/rev
N2.2 - Cast aluminium alloys with a hardness of 75 - 90HB	help_outline Possible use	121 ft/min	0.0011 inch/rev
N2.3 - Cast aluminium alloys with a hardness of 90 < 140HB	help_outline Possible use	89 ft/min	0.0011 inch/rev

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	184 ft/min	0.0011 inch/rev
N3.2 - Short-chip copper-alloys with good to moderate machining properties	help_outline Possible use	108 ft/min	0.0012 inch/rev
N3.3 - Electrolytic copper and long-chip copper-alloys with moderate to poor machining properties	help_outline Possible use	56 ft/min	0.001 inch/rev

N4

N4 - Polymers(synthetic or semi-synthetic materials)

navigate_next

	Suitability	v_c	f
N4.1 - Thermoplastic polymers	help_outline Possible use	98 ft/min	0.0014 inch/rev
N4.2 - Thermosetting polymers	help_outline Possible use	92 ft/min	0.0011 inch/rev
N4.3 - Reinforced polymers or composites	help_outline Possible use	46 ft/min	0.0009 inch/rev

S - High-temperature alloys (superalloys with high temperature stength and corrosion resistant surpassing that of stainless steel)

S1

S1 - Titanium or titanium alloys

navigate_next

	Suitability	v_c	f
S1.1 - Titanium or titanium alloys, with a hardness of <200HB	help_outline Possible use	79 ft/min	0.0009 inch/rev
S1.2 - Titanium alloys, with a hardness of 200 - 280HB	help_outline Possible use	43 ft/min	0.0008 inch/rev
S1.3 - Titanium alloys, a hardness of 280 - 360HB	help_outline Possible use	23 ft/min	0.0007 inch/rev

S2

S2 - Fe-based high-temperature alloys

navigate_next

	Suitability	v_c	f
S2.1 - High-temperature Fe-based alloys with a hardness of <200HB	help_outline Possible use	23 ft/min	0.0009 inch/rev
S2.2 - High-temperature Fe-based alloys with a hardness of 200-280HB	help_outline Possible use	20 ft/min	0.0006 inch/rev

S3

S3 - Ni-based high-temperature alloys

navigate_next

	Suitability	v_c	f
S3.1 - High-temperature Ni-based alloys with a hardness of <280HB	help_outline Possible use	16 ft/min	0.0009 inch/rev
S3.2 - High-temperature Ni-based alloys with a hardness of 280 - 360HB	help_outline Possible use	13 ft/min	0.0006 inch/rev

S4

S4 - Co-based high-temperature alloys

navigate_next

	Suitability	v_c	f
S4.1 - High-temperature Co-based alloys with a hardness of <240HB	help_outline Possible use	13 ft/min	0.0009 inch/rev
S4.2 - High-temperature Co-based alloys with a hardness of 240 - 320HB	help_outline Possible use	10 ft/min	0.0006 inch/rev

Related Parts

Used in set
Used as replacement

A221N1

Product Feature

Product Detail

Cutting Conditions

P1

P2

P3

P4

M1

M2

M3

M4

K1

K2

K3

K4

K5

N1

N2

N3

N4

S1

S2

S3

S4

Related Parts

A221SET