HSS SMART STEP Deepcut stepped twist drill bit - DRL-STEP-SPRL-SMARTSTEP-DEEPCUT-(D8-20)

HSS SMART STEP Deepcut stepped twist drill bit - DRL-STEP-SPRL-SMARTSTEP-DEEPCUT-(D8-20) - 1

HSS SMART STEP Deepcut stepped twist drill bit - DRL-STEP-SPRL-SMARTSTEP-DEEPCUT-(D8-20) - 2

HSS SMART STEP Deepcut stepped twist drill bit

Name: HSS SMART STEP Deepcut stepped twist drill bit
Brand: Würth
SKU: 0694459820

Stepped twist drill bit HSS SMART STEP Deepcut
DRL-STEP-SPRL-SMARTSTEP-DEEPCUT-(D8-20)
ZEBRA SMART STEP

Art.-no. 0694459820

EAN 4062856812394

All versions

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HSS SMART STEP Deepcut stepped twist drill bit

Art.-no. 0694459820

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The multi-functional stepped drill with AlCrN coating and unique SMART STEP technology for high-precision, flexible use in sheet metal and, for the first time, allows drilling of thicker workpieces made of conventional steel up to 1300 N/mm² strength, cast iron, aluminium, brass, bronze, Plexiglas, plastic, and wood.

Precise, circular drilling

No tool changes and shorter machining times

Saves pre-drilling with smaller twist drill bits, precise tapping without running off centre

Saves extra deburring, as the next largest step diameter performs this function

Combines numerous drill hole diameters in a single tool

Very fast tapping and accelerated drilling progress due to four high-performance cutting edges and SMART STEP technology

Flexible, smart use

Now also suitable for thicker workpieces with a material thickness of up to 10 mm (compared to conventional stepped drill bits, which are limited to sheet metal up to 4 mm thick)

Specially designed version that combines all core hole dimensions (dia. 3.3-10.2 mm) for through hole threads M4-M12 to 1.5xD in a single tool

For use in cordless screwdrivers and hand, box column and pillar drills.

Compared to using annular cutters with magnetic core drills, there are no issues when accessing hard-to-reach places (e.g. on T-beams) or due to adhesive force being too low

Extremely comfortable drilling

Effortless drilling

Completely smooth running without getting caught in the workpiece

No warping of sheet metal

Simple boring or enlarging of an existing drill hole

Reduced force exerted on the tool during the drilling process

AlCrN multi-layer wear protection coating

Extremely high temperature resistance up to 1,050 °C

Very high coating hardness of 3,000 HV

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

3-flat shank

Prevents spinning in the drill chuck, ensures optimal power transmission and protects the drill chuck from damage

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

Product information

Würth Catalogue

Datasheets(X)

Certificates/ Documents

Instructions

Ensure that there is sufficient cooling/lubrication

Make sure that the feed is even

Observe the speed table

Do not push during core drilling — the stepped drill bit will automatically retract into the sheet metal

Pay attention to the total length of the stepped drill bit during drilling

Min./max. drill diameter	8-20 mm
Shank diameter	10 mm
Shaft length	25 mm
Length	110 mm
Shank style	3-face shank
Surface	AlCrN
Material to be processed	Steel, Cast metal, Non-ferrous metal, Wood, Hardwood

For dia. 22.0-30.0
Material designation	Tensile strength	n
		Dia. 22.0-30.0 art.
		1st drilling step	reduce for all further steps to
General structural steels	≤ 700 N/mm²	300	200
Unalloyed hardened steels	≤ 700 N/mm²	300	200
Low-alloy hardened steels	≤ 700 N/mm²	300	200
Low-alloy hardened steels	≤ 900 N/mm²	300	200
Alloyed hardened steels	≤ 1,200 N/mm²	300	200
Nitriding steels	≤ 1,200 N/mm²	300	200
Tool steels	≤ 850 N/mm²	300	200
High-speed steels	≤ 1,200 N/mm²	300	200
Cast iron	≤ 350 HB	300	150
Spheroidal graphite and malleable iron	≤ 350 HB	300	150
Aluminium	≤ 450 N/mm²	350	200
Aluminium alloys	≤ 450 N/mm²	350	200
Low-alloy copper	≤ 400 N/mm²	300	200
Short-chipping brass	≤ 850 N/mm²	300	200
Long-chipping brass	≤ 850 N/mm²	300	200
Thermosetting plastics		300	200
Thermoplastic plastics		300	200

For dia. 9.0-19.0 and dia. 21.0-29.0
Material designation	Tensile strength	n
		Dia. 9.0-19.0 art.		Dia. 21.0-29.0 art.
		1st drilling step	reduce for all further steps to	1st drilling step	reduce for all further steps to
General structural steels	≤ 700 N/mm²	700	250	350	200
Unalloyed hardened steels	≤ 700 N/mm²	700	250	350	200
Low-alloy hardened steels	≤ 700 N/mm²	700	250	350	200
Low-alloy hardened steels	≤ 900 N/mm²	700	250	350	200
Alloyed hardened steels	≤ 1,200 N/mm²	700	250	350	200
Nitriding steels	≤ 1,200 N/mm²	700	250	350	200
Tool steels	≤ 850 N/mm²	700	250	350	200
High-speed steels	≤ 1,200 N/mm²	700	250	350	200
Cast iron	≤ 350 HB	750	200	300	160
Spheroidal graphite and malleable iron	≤ 350 HB	750	200	300	160
Aluminium	≤ 450 N/mm²	1000	400	400	200
Aluminium alloys	≤ 450 N/mm²	1000	400	400	200
Low-alloy copper	≤ 400 N/mm²	750	300	300	200
Short-chipping brass	≤ 850 N/mm²	750	300	300	200
Long-chipping brass	≤ 850 N/mm²	750	300	300	200
Thermosetting plastics		750	300	300	200
Thermoplastic plastics		750	300	300	200

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

Art. no.	Number of steps	Max. drilling depth	Diameter of the drilling area [mm]
0694459310	6	1.5xD	3.3/4.2/5.0/6.8/8.5/10.2
0694459412	9	10 mm	4.0/5.0/6.0/7.0/8.0/9.0/10.0/11.0/12.0
0694459413	9	10 mm	4.5/5.5/6.5/7.5/8.5/9.5/10.5/11.5/12.5
0694459820	7	10 mm	8.0/10.0/12.0/14.0/16.0/18.0/20.0
0694459919	6	10 mm	9.0/11.0/13.0/15.0/17.0/19.0
0694459229	5	10 mm	21.0/23.0/25.0/27.0/29.0
0694459230	5	10 mm	22.0/24.0/26.0/28.0/30.0

For dia. 4.5-12.5 and dia. 8.0-20.0
Material designation	Tensile strength	n
		Dia. 4.5-12.5 art.		Dia. 8.0-20.0 art.
		1st drilling step	reduce for all further steps to	1st drilling step	reduce for all further steps to
General structural steels	≤ 700 N/mm²	1300	400	800	250
Unalloyed heat-treated steels	≤ 700 N/mm²	1300	400	800	250
Low-alloy heat-treated steels	≤ 700 N/mm²	1300	400	800	250
Low-alloy heat-treated steels	≤ 900 N/mm²	1300	400	800	250
Alloyed heat-treated steels	≤ 1200 N/mm²	1300	400	800	250
Nitriding steels	≤ 1200 N/mm²	1300	400	800	250
Tool steels	≤ 850 N/mm²	1300	400	800	250
High-speed steels	≤ 1200 N/mm²	1300	400	800	250
Cast iron	≤ 350 HB	1100	300	600	200
Nodular graphite and malleable iron	≤ 350 HB	1100	300	600	200
Aluminium	≤ 450 N/mm²	2000	700	1100	350
Aluminium alloys	≤ 450 N/mm²	2000	700	1100	350
Copper, low-alloy	≤ 400 N/mm²	1500	500	850	300
Brass, short-chipping	≤ 850 N/mm²	1500	500	850	300
Brass, long-chipping	≤ 850 N/mm²	1500	500	850	300
Plastics, duroplastic		1500	500	850	300
Plastics, thermoplastic		1500	500	850	300

For dia. 3.3 - 10.2 and dia. 4.0 - 12.0
Material designation	Tensile strength	n
		dia. 3.3 - 10.2 art.		dia. 4.0 - 12.0 art.
		1st drilling step	reduce for all further steps to	1st drilling step	reduce for all further steps to
General structural steels	≤ 700 N/mm²	1500	600	1500	400
Unalloyed heat-treated steels	≤ 700 N/mm²	1500	600	1500	400
Low-alloy heat-treated steels	≤ 700 N/mm²	1500	600	1500	400
Low-alloy heat-treated steels	≤ 900 N/mm²	1500	600	1500	400
Alloyed heat-treated steels	≤ 1200 N/mm²	1500	600	1500	400
Nitriding steels	≤ 1200 N/mm²	1500	600	1500	400
Tool steels	≤ 850 N/mm²	1500	600	1500	400
High-speed steels	≤ 1200 N/mm²	1500	600	1500	400
Cast iron	≤ 350 HB	1500	600	1200	300
Nodular graphite and malleable iron	≤ 350 HB	1500	600	1200	300
Aluminium	≤ 450 N/mm²	2500	1100	2200	700
Aluminium alloys	≤ 450 N/mm²	2500	1100	2200	700
Copper, low-alloy	≤ 400 N/mm²	1900	900	1600	500
Brass, short-chipping	≤ 850 N/mm²	1900	900	1600	500
Brass, long-chipping	≤ 850 N/mm²	1900	900	1600	500
Plastics, duroplastic		1900	900	1600	500
Plastics, thermoplastic		1900	900	1600	500

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