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

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

HSS SMART STEP stepped twist drill bit

Name: HSS SMART STEP stepped twist drill bit
Brand: Würth
SKU: 0694450420

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

Art.-no. 0694450420

EAN 4065746562171

All versions

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Price for selected packaging unit

HSS SMART STEP stepped twist drill bit

Art.-no. 0694450420

Price for selected packaging unit

Quantity

x 1 pcs

Exclusively for trade customers

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Stepped drill bit with unique SMART STEP technology and dynamically curved rake between the individual step transitions for extremely fast and comfortable use in all common materials with a material thickness of up to 3.5 mm.

Dynamically curved rake between each step transition

Significantly longer service life compared to conventional stepped drill bits

Significantly faster drilling compared to conventional stepped drill bits

Little effort required

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

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

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.

Instructions

Ensure that there is sufficient coolant/lubricant

Observe the rotation speed table

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

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	Uncoated
Material to be processed	Steel Cast metal Non-ferrous metal Plastic Wood

Art. no.	Number of steps	Diameter of the drilling area [mm]
0694450412	9	4.0/5.0/6.0/7.0/8.0/9.0/10.0/11.0/12.0
0694450420	9	4.0/6.0/8.0/10.0/12.0/14.0/16.0/18.0/20.0
0694450421	9	4.0/6.0/8.0/10.0/12.0/14.0/16.0/18.0/20.0
0694450630	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
0694450639	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
0694450640	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
0694450637	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)

Cutting values
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	23	1800	600	1800	360
Unalloyed quenched and tempered steels	≤ 700 N/mm²	23	1800	600	1800	360
Unalloyed quenched and tempered steels	≤ 900 N/mm²	19	1500	500	1500	300
Low-alloy quenched and tempered steels	≤ 700 N/mm²	23	1800	600	1800	360
Low-alloy quenched and tempered steels	≤ 900 N/mm²	19	1500	500	1500	300
Alloyed quenched and tempered steel	≤ 1,200 N/mm²	18	1400	470	1400	280
Nitriding steels	≤ 1,200 N/mm²	18	1400	470	1400	280
Tool steels	≤ 850 N/mm²	18	1400	470	1400	280
High-speed steels	≤ 1,200 N/mm²	18	1400	470	1400	280
Cast metals
Cast iron	≤ 350 HB	15	1200	400	1200	250
Spheroidal graphite and malleable iron	≤ 350 HB	15	1200	400	1200	250
Non-ferrous metals
Aluminium	≤ 450 N/mm²	22	1700	580	1700	350
Aluminium alloys	≤ 450 N/mm²	22	1700	580	1700	350
Low-alloy copper	≤ 400 N/mm²	19	1500	500	1500	300
Short-chipping brass	≤ 850 N/mm²	22	1700	580	1700	350
Long-chipping brass	≤ 850 N/mm²	22	1700	580	1700	350
Plastics
Thermosetting plastics		19	1500	500	1500	300
Thermoplastic plastics		19	1500	500	1500	300

Cutting values
For dia. 6.0-30.0 and dia. 6.0-37.0
Material designation	Tensile strength	v_c	n
			dia. 6.0-30.0 art.		dia. 6.0-37.0 art.
			Drilling (1st drilling step)	to	Drilling (1st drilling step)	to
Steels
General structural steels	≤ 700 N/mm²	23	1200	240	1200	200
Unalloyed quenched and tempered steels	≤ 700 N/mm²	23	1200	240	1200	200
Unalloyed quenched and tempered steels	≤ 900 N/mm²	19	1000	200	1000	150
Low-alloy quenched and tempered steels	≤ 700 N/mm²	23	1200	240	1200	200
Low-alloy quenched and tempered steels	≤ 900 N/mm²	19	1000	200	1000	150
Alloyed quenched and tempered steel	≤ 1,200 N/mm²	18	950	190	950	150
Nitriding steels	≤ 1,200 N/mm²	18	950	190	950	150
Tool steels	≤ 850 N/mm²	18	950	190	950	150
High-speed steels	≤ 1,200 N/mm²	18	950	190	950	150
Cast metals
Cast iron	≤ 350 HB	15	1000	150	1000	120
Spheroidal graphite and malleable iron	≤ 350 HB	15	1000	150	1000	120
Non-ferrous metals
Aluminium	≤ 450 N/mm²	22	1200	230	1200	190
Aluminium alloys	≤ 450 N/mm²	22	1200	230	1200	190
Low-alloy copper	≤ 400 N/mm²	19	1000	200	1000	150
Short-chipping brass	≤ 850 N/mm²	22	1200	230	1200	190
Long-chipping brass	≤ 850 N/mm²	22	1200	230	1200	190
Plastics
Thermosetting plastics		19	1000	200	1000	150
Thermoplastic plastics		19	1000	200	1000	150

Cutting values
For dia. 6.0-39.0 and dia. 6.0-40.5
Material designation	Tensile strength	v_c	n
			dia. 6.0-39.0 art.		dia. 6.0-40.5 art.
			Drilling (1st drilling step)	to	Drilling (1st drilling step)	to
Steels
General structural steels	≤ 700 N/mm²	23	1200	190	1200	180
Unalloyed quenched and tempered steels	≤ 700 N/mm²	23	1200	190	1200	180
Unalloyed quenched and tempered steels	≤ 900 N/mm²	19	1000	150	1000	150
Low-alloy quenched and tempered steels	≤ 700 N/mm²	23	1200	190	1200	180
Low-alloy quenched and tempered steels	≤ 900 N/mm²	19	1000	150	1000	150
Alloyed quenched and tempered steel	≤ 1,200 N/mm²	18	950	140	950	140
Nitriding steels	≤ 1,200 N/mm²	18	950	140	950	140
Tool steels	≤ 850 N/mm²	18	950	140	950	140
High-speed steels	≤ 1,200 N/mm²	18	950	140	950	140
Cast metals
Cast iron	≤ 350 HB	15	1000	120	1000	120
Spheroidal graphite and malleable iron	≤ 350 HB	15	1000	120	1000	120
Non-ferrous metals
Aluminium	≤ 450 N/mm²	22	1200	180	1200	170
Aluminium alloys	≤ 450 N/mm²	22	1200	180	1200	170
Low-alloy copper	≤ 400 N/mm²	19	1000	150	1000	150
Short-chipping brass	≤ 850 N/mm²	22	1200	180	1200	170
Long-chipping brass	≤ 850 N/mm²	22	1200	180	1200	170
Plastics
Thermosetting plastics		19	1000	150	1000	150
Thermoplastic plastics		19	1000	150	1000	150

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.

Additional accessory:

Product

Description

Quantity

Price
/PU

Drilling and cutting foam CUT+COOL

CUTFM-DRL-(CUT-COOL)-400ML

Art.-no. 0893050007

Highly active, high-performance cutting foam for all machining work.

CUT+COOL Perfect drilling and cutting oil

CUTOIL-PERFECT-(CUT-COOL)-400ML

Art.-no. 0893050008

High-performance cutting oil for the heaviest machining work and higher cutting speeds

Cut and Cool Perfect drilling/cutting paste

CUTPAST-DRILL-(CUT-COOL-PERFECT)-500ML

Art.-no. 0893050010

Optimum results and safety for all materials and applications

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