HSS AlTiN SMART STEP stepped twist drill bit - DRL-STEP-SMARTSTEP-ALTIN-(D4-20MM)

HSS AlTiN SMART STEP stepped twist drill bit - DRL-STEP-SMARTSTEP-ALTIN-(D4-20MM) - 1

HSS AlTiN SMART STEP stepped twist drill bit

Name: HSS AlTiN SMART STEP stepped twist drill bit
Brand: Würth
SKU: 0694451420

Stepped twist drill bit HSS AlTiN SMART STEP
DRL-STEP-SMARTSTEP-ALTIN-(D4-20MM)
ZEBRA SMART STEP

Art.-no. 0694451420

EAN 4065746562034

All versions

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HSS AlTiN SMART STEP stepped twist drill bit

Art.-no. 0694451420

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The high-performance stepped drill bit with unique SMART STEP technology, innovative rake between the individual step transitions and AlTiN coating for extremely fast, comfortable and long-lasting use in all common materials with a material thickness of up to 3.5 mm.

Innovative geometry with three chip surfaces between the individual step transitions

Up to 3x longer service life compared to all other coated stepped drill bits

Significantly faster drilling compared to all other coated stepped drill bits

Minimal effort required

Completely smooth, perfectly controlled drilling process

Greatly reduced formation of burrs

SMART STEP technology

Up to 3x faster tapping compared to conventional stepped drill bits

Precision tapping without centring or centre-punching

No warping of sheet metal

Simple boring or enlarging of an existing drill hole

No rattling or catching in the material

Precise, circular drilling without tearing or splintering

Deep-ground spiral flute

Excellent chip removal

AlTiN multi-layer wear protection coating

Extremely high temperature resistance up to 1,150 °C

Very high coating hardness of 3,200 HV

Multi-layer structure for optimal chip removal and improved cutting properties (prevents material becoming welded)

3-flat shank

No spinning in the drill chuck: faster, more comfortable working

Optimal power transmission

Protects the drill chuck from damage

Little effort required to loosen and tighten the drill chuck

Product packaging made of 100 % PCR (recycled plastic from household waste), 100 % recyclable and Cradle to Cradle Certified^® Bronze

Available exclusively from Würth

Notice

Cooling not absolutely necessary, but significantly extends the service life

Observe the rotation speed table

Do not push during boring. The stepped drill bit automatically retracts into the sheet metal.

Product information

Würth Catalogue

Datasheets(X)

Certificates/ Documents

Application area

The ideal tool for machining sheet metal.

Centring, spot drilling, boring and deburring of sheet metal, tubes and profiles in one operation, for use on both hand drills and stationary equipment.

Ideal for use in electrical trade, plumbing and heating systems, automotive workshops, mechanical engineering, switch cabinet manufacturing or container and equipment engineering.

Min./max. drill diameter	4-20 mm
Shank diameter	8 mm
Shaft length	24 mm
Length	71.5 mm
Shank style	3-face shank
Surface	AlTiN
Type description	HSS AlCrN SMART STEP
Material to be processed	Steel, Cast metal, Stainless steel, Non-ferrous metal, Plastic, Wood

Key
v_c = cutting speed [m/min]
n = rotation speed [rpm]
The suggested cutting values are reference values and must be adapted to the respective conditions.

For dia. 6.0-37.0 and dia. 6.0-39.0
Material designation	Tensile strength	v_c	n
			Dia. 6.0-37.0 art.		Dia. 6.0-39.0 art.
			Drilling (1st drilling step)	to	Drilling (1st drilling step)	to
Steels
General structural steels	≤ 700 N/mm²	26	1350	220	1350	210
Unalloyed quenched and tempered steels	≤ 700 N/mm²	26	1350	220	1350	210
Unalloyed quenched and tempered steels	≤ 900 N/mm²	23	1200	200	1200	190
Low-alloy quenched and tempered steels	≤ 700 N/mm²	26	1350	220	1350	210
Low-alloy quenched and tempered steels	≤ 900 N/mm²	23	1200	200	1200	190
Alloyed quenched and tempered steel	≤ 1,200 N/mm²	20	1050	170	1050	160
Nitriding steels	≤ 1,200 N/mm²	20	1050	170	1050	160
Tool steels	≤ 850 N/mm²	20	1050	170	1050	160
High-speed steels	≤ 1,200 N/mm²	20	1050	170	1050	160
Stainless steels
Corrosion-resistant steels	≤ 1,200 N/mm²	11	580	100	580	100
Cast metals
Cast iron	≤ 350 HB	18	1000	150	1000	140
Spheroidal graphite and malleable iron	≤ 350 HB	18	1000	150	1000	140
Non-ferrous metals
Aluminium	≤ 450 N/mm²	23	1200	200	1200	190
Aluminium alloys	≤ 450 N/mm²	23	1200	200	1200	190
Low-alloy copper	≤ 400 N/mm²	18	1000	150	1000	140
Short-chipping brass	≤ 850 N/mm²	23	1200	200	1200	190
Long-chipping brass	≤ 850 N/mm²	23	1200	200	1200	190
Plastics
Thermosetting plastics		18	1000	150	1000	140
Thermoplastic plastics		18	1000	150	1000	140

For dia. 5.0-29.0 and dia. 6.0-30.0
Material designation	Tensile strength	v_c	n
			Dia. 5.0-29.0 art.		Dia. 6.0-30.0 art.
			Drilling (1st drilling step)	to	Drilling (1st drilling step)	to
Steels
General structural steels	≤ 700 N/mm²	26	1600	208	1350	280
Unalloyed quenched and tempered steels	≤ 700 N/mm²	26	1600	280	1350	280
Unalloyed quenched and tempered steels	≤ 900 N/mm²	23	1500	250	1200	240
Low-alloy quenched and tempered steels	≤ 700 N/mm²	26	1600	280	1350	280
Low-alloy quenched and tempered steels	≤ 900 N/mm²	23	1500	250	1200	240
Alloyed quenched and tempered steel	≤ 1,200 N/mm²	20	1200	210	1050	210
Nitriding steels	≤ 1,200 N/mm²	20	1200	210	1050	210
Tool steels	≤ 850 N/mm²	20	1200	210	1050	210
High-speed steels	≤ 1,200 N/mm²	20	1200	210	1050	210
Stainless steels
Corrosion-resistant steels	≤ 1,200 N/mm²	11	700	120	580	130
Cast metals
Cast iron	≤ 350 HB	18	1100	200	1000	190
Spheroidal graphite and malleable iron	≤ 350 HB	18	1100	200	1000	190
Non-ferrous metals
Aluminium	≤ 450 N/mm²	23	1500	250	1200	240
Aluminium alloys	≤ 450 N/mm²	23	1500	250	1200	240
Low-alloy copper	≤ 400 N/mm²	18	1100	200	1000	190
Short-chipping brass	≤ 850 N/mm²	23	1500	250	1200	240
Long-chipping brass	≤ 850 N/mm²	23	1500	250	1200	240
Plastics
Thermosetting plastics		18	1100	200	1000	190
Thermoplastic plastics		18	1100	200	1000	190

For dia. 5.3-38.5 and dia. 6.0-38.0
Material designation	Tensile strength	v_c	n
			Dia. 5.3-38.5 art.		Dia. 6.0-38.0 art.
			Tapping (1st drilling step)	to	Tapping (1st drilling step)	to
Steels
General structural steels	≤ 700 N/mm²	26	1500	210	1350	220
Unalloyed hardened steels	≤ 700 N/mm²	26	1500	210	1350	220
Unalloyed hardened steels	≤ 900 N/mm²	23	1500	190	1200	190
Low-alloy hardened steels	≤ 700 N/mm²	26	1500	210	1350	220
Low-alloy hardened steels	≤ 900 N/mm²	23	1500	190	1200	190
Alloyed hardened steels	≤ 1,200 N/mm²	20	1200	160	1050	160
Nitriding steels	≤ 1,200 N/mm²	20	1200	160	1050	160
Tool steels	≤ 850 N/mm²	20	1200	160	1050	160
High-speed steels	≤ 1,200 N/mm²	20	1200	160	1050	160
High-grade steels
Stainless steels	≤ 1,200 N/mm²	11	580	100	580	100
Cast metals
Cast iron	≤ 350 HB	18	1000	140	1000	150
Spheroidal graphite and malleable iron	≤ 350 HB	18	1000	140	1000	150
Non-ferrous metals
Aluminium	≤ 450 N/mm²	23	1500	190	1200	190
Aluminium alloys	≤ 450 N/mm²	23	1500	190	1200	190
Low-alloy copper	≤ 400 N/mm²	18	1000	140	1000	150
Short-chipping brass	≤ 850 N/mm²	23	1500	190	1200	190
Long-chipping brass	≤ 850 N/mm²	23	1500	190	1200	190
Plastics
Thermosetting plastics		18	1000	140	1000	150
Thermoplastics		18	1000	140	1000	150

For dia. 6.0-40.5 and dia. 6.0-26.75
Material designation	Tensile strength	v_c	n
			Dia. 6.0-40.5 art.		Dia. 6.0-26.75 art.
			Drilling (1st drilling step)	to	Tapping (1st drilling step)	to
Steels
General structural steels	≤ 700 N/mm²	26	1350	200	1350	300
Unalloyed quenched and tempered steels	≤ 700 N/mm²	26	1350	200	1350	300
Unalloyed quenched and tempered steels	≤ 900 N/mm²	23	1200	180	1200	270
Low-alloy quenched and tempered steels	≤ 700 N/mm²	26	1350	200	1350	300
Low-alloy quenched and tempered steels	≤ 900 N/mm²	23	1200	180	1200	270
Alloyed quenched and tempered steel	≤ 1,200 N/mm²	20	1050	150	1050	230
Nitriding steels	≤ 1,200 N/mm²	20	1050	150	1050	230
Tool steels	≤ 850 N/mm²	20	1050	150	1050	230
High-speed steels	≤ 1,200 N/mm²	20	1050	150	1050	230
Stainless steels
Corrosion-resistant steels	≤ 1,200 N/mm²	11	580	90	580	130
Cast metals
Cast iron	≤ 350 HB	18	1000	140	1000	200
Spheroidal graphite and malleable iron	≤ 350 HB	18	1000	140	1000	200
Non-ferrous metals
Aluminium	≤ 450 N/mm²	23	1200	180	1200	270
Aluminium alloys	≤ 450 N/mm²	23	1200	180	1200	270
Low-alloy copper	≤ 400 N/mm²	18	1000	140	1000	200
Short-chipping brass	≤ 850 N/mm²	23	1200	180	1200	270
Long-chipping brass	≤ 850 N/mm²	23	1200	180	1200	270
Plastics
Thermosetting plastics		18	1000	140	1000	200
Thermoplastic plastics		18	1000	140	1000	200

Art. no.	Number of steps	Diameter of the drilling area [mm]
0694451330	14	3.5/5.5/7.5/9.5/11.5/13.5/15.5/17.5/19.5/21.5/23.5/25.5/27.5/29.5
0694451412	9	4.0/5.0/6.0/7.0/8.0/9.0/10.0/11.0/12.0
0694451420	9	4.0/6.0/8.0/10.0/12.0/14.0/16.0/18.0/20.0
0694451429	13	4.5/6.5/8.5/10.5/12.5/14.5/16.5/18.5/20.5/22.5/24.5/26.5/28.5
0694451529	13	5.0/7.0/9.0/11.0/13.0/15.0/17.0/19.0/21.0/23.0/25.0/27.0/29.0
0694451538	11	5.3/7.0/9.0/10.5/14.5/18.5/23.5/27.0/30.5/34.5/38.5
0694451628	8	6.0/9.0/11.4 (PG7)/14.0 (PG9)/17.25 (PG11)/19.0 (PG13.5)/21.25 (PG16)/26.75 (PG21)
0694451630	13	6.0/8.0/10.0/12.0/14.0/16.0/18.0/20.0/22.0/24.0/26.0/28.0/30.0
0694451637	12	6.0/9.0/12.5 (PG7)/15.2 (PG9)/18.6 (PG11)/20.4 (PG13.5)/22.5 (PG16)/26.0/28.3 (PG21)/30.5/34.0/37.0 (PG29)
0694451638	11	5.3/7.0/9.0/10.5/14.5/18.5/23.5/27.0/30.5/34.5/38.5
0694451639	12	6.0/9.0/12.0/15.0/18.0/21.0/24.0/27.0/30.0/33.0/36.0/39.0
0694451640	16	6.5/8.5/10.5/12.5/14.5/16.5/18.5/20.5/23.5/25.5/28.0/30.5/32.5/35.5/38.5/40.5

For dia. 3.5-29.5 and dia. 4.5-28.5
Material designation	Tensile strength	v_c	n
			Dia. 3.5-29.5 art.		Dia. 4.5-28.5 art.
			Drilling (1st drilling step)	to	Drilling (1st drilling step)	to
Steels
General structural steels	≤ 700 N/mm²	26	2300	280	1800	290
Unalloyed quenched and tempered steels	≤ 700 N/mm²	26	2300	280	1800	290
Unalloyed quenched and tempered steels	≤ 900 N/mm²	23	2000	250	1600	250
Low-alloy quenched and tempered steels	≤ 700 N/mm²	26	2300	280	1800	290
Low-alloy quenched and tempered steels	≤ 900 N/mm²	23	2000	250	1600	250
Alloyed quenched and tempered steel	≤ 1,200 N/mm²	20	1800	210	1400	210
Nitriding steels	≤ 1,200 N/mm²	20	1800	210	1400	210
Tool steels	≤ 850 N/mm²	20	1800	210	1400	210
High-speed steels	≤ 1,200 N/mm²	20	1800	210	1400	210
Stainless steels
Corrosion-resistant steels	≤ 1,200 N/mm²	11	1000	120	750	120
Cast metals
Cast iron	≤ 350 HB	18	1600	200	1250	200
Spheroidal graphite and malleable iron	≤ 350 HB	18	1600	200	1250	200
Non-ferrous metals
Aluminium	≤ 450 N/mm²	23	2000	250	1600	250
Aluminium alloys	≤ 450 N/mm²	23	2000	250	1600	250
Low-alloy copper	≤ 400 N/mm²	18	1600	200	1250	200
Short-chipping brass	≤ 850 N/mm²	23	2000	250	1600	250
Long-chipping brass	≤ 850 N/mm²	23	2000	250	1600	250
Plastics
Thermosetting plastics		18	1600	200	1250	200
Thermoplastic plastics		18	1600	200	1250	200

For dia. 4.0-12.0 and dia. 4.0-20.0
Material designation	Tensile strength	v_c	n
			dia. 4.0-12.0 art.		dia. 4.0-20.0 art.
			Drilling (1st drilling step)	to	Drilling (1st drilling step)	to
Steels
General structural steels	≤ 700 N/mm²	26	2000	700	2000	400
Unalloyed quenched and tempered steels	≤ 700 N/mm²	26	2000	700	2000	400
Unalloyed quenched and tempered steels	≤ 900 N/mm²	23	1800	600	1800	360
Low-alloy quenched and tempered steels	≤ 700 N/mm²	26	2000	700	2000	400
Low-alloy quenched and tempered steels	≤ 900 N/mm²	23	1800	600	1800	360
Alloyed quenched and tempered steel	≤ 1,200 N/mm²	20	1600	530	1600	320
Nitriding steels	≤ 1,200 N/mm²	20	1600	530	1600	320
Tool steels	≤ 850 N/mm²	20	1600	530	1600	320
High-speed steels	≤ 1,200 N/mm²	20	1600	530	1600	320
Stainless steels
Corrosion-resistant steels	≤ 1,200 N/mm²	11	830	300	870	190
Cast metals
Cast iron	≤ 350 HB	18	1400	470	1400	280
Spheroidal graphite and malleable iron	≤ 350 HB	18	1400	470	1400	280
Non-ferrous metals
Aluminium	≤ 450 N/mm²	23	1800	600	1800	360
Aluminium alloys	≤ 450 N/mm²	23	1800	600	1800	360
Low-alloy copper	≤ 400 N/mm²	18	1400	470	1400	280
Short-chipping brass	≤ 850 N/mm²	23	1800	600	1800	360
Long-chipping brass	≤ 850 N/mm²	23	1800	600	1800	360
Plastics
Thermosetting plastics		18	1400	470	1400	280
Thermoplastic plastics		18	1400	470	1400	280

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