HSS SMART STEP sheet metal conical drill bit - SHTMETCONIDRL-SMARTSTEP-BIT-SZ2-(D5-20)

HSS SMART STEP sheet metal conical drill bit - SHTMETCONIDRL-SMARTSTEP-BIT-SZ2-(D5-20) - 1

HSS SMART STEP sheet metal conical drill bit

Name: HSS SMART STEP sheet metal conical drill bit
Brand: Würth
SKU: 0694456021

Sheet metal conical drill bit HSS SMART STEP
SHTMETCONIDRL-SMARTSTEP-BIT-SZ2-(D5-20)
ZEBRA SMART STEP

Art.-no. 0694456021

EAN 4065746557597

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HSS SMART STEP sheet metal conical drill bit

Art.-no. 0694456021

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x 1 pcs

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The sheet metal conical drill bit with unique SMART STEP technology and spiral groove for extremely fast, comfortable and precise use in all common materials with a material thickness of up to 4 mm.

SMART STEP technology

Up to 3x faster tapping compared to conventional sheet metal conical drill bits

Up to 50 % longer service life compared to conventional sheet metal conical drill bits

Significantly less effort required when drilling compared to conventional sheet metal conical drill bits

Saves pre-drilling, precise tapping without running off centre

Comfortable, stepless boring or enlarging of an existing drill hole

Burr-free drilling without deformation of the sheet metal

Precise, circular drilling

Deep-ground spiral flute

Excellent chip removal

Laser scaling in the flute

Easy reading of the hole diameter during the drilling process

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 universal tool for large, stepless drilling in 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 the 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 sheet metal conical drill bit automatically retracts into the sheet metal.

Size	2
Min./max. drill diameter	5-20 mm
Length	79 mm
Shank diameter	1/4 in
Cutting material	HSS
Shank style	Hexagon bit holder, shape E, DIN3126
Surface	Uncoated

For dia. 40.0-61.0
Material designation	Tensile strength	v_c	n
			Dia. 40.0-61.0 Art.
			Tapping (1st drilling step)	to
Steels
General structural steels	≤ 700 N/mm²	15	110	80
Unalloyed quenched and tempered steels	≤ 700 N/mm²	15	110	80
Unalloyed quenched and tempered steels	≤ 900 N/mm²	11	85	55
Low-alloy quenched and tempered steels	≤ 700 N/mm²	15	110	80
Low-alloy quenched and tempered steels	≤ 900 N/mm²	11	85	55
Alloyed quenched and tempered steels	≤ 1,300 N/mm²	9	70	45
Nitriding steels	≤ 1,300 N/mm²	9	70	45
Tool steels	≤ 1,300 N/mm²	9	70	45
High-speed steels	≤ 1,300 N/mm²	9	70	45
Cast metals
Cast iron	≤ 350 HB	15	110	80
Spheroidal graphite and malleable iron	≤ 350 HB	12	90	60
Non-ferrous metals
Aluminium	≤ 450 N/mm²	18	140	90
Aluminium alloys	≤ 450 N/mm²	17	140	90
Low-alloy copper	≤ 400 N/mm²	17	140	90
Short-chipping brass	≤ 850 N/mm²	18	140	90
Long-chipping brass	≤ 850 N/mm²	17	140	90
Plastics
Plastics, thermosetting		26	200	130
Plastics, thermoplastic		24	190	125

For dia. 24.0-40.0 and dia. 36.0-50.0
Material designation	Tensile strength	v_c	n
			Dia. 24.0-40.0 Art.		Dia. 36.0-50.0 Art.
			Tapping (1st drilling step)	to	Tapping (1st drilling step)	to
Steels
General structural steels	≤ 700 N/mm²	15	200	120	130	100
Unalloyed quenched and tempered steels	≤ 700 N/mm²	15	200	120	130	100
Unalloyed quenched and tempered steels	≤ 900 N/mm²	11	140	85	95	70
Low-alloy quenched and tempered steels	≤ 700 N/mm²	15	200	120	130	100
Low-alloy quenched and tempered steels	≤ 900 N/mm²	11	140	85	95	70
Alloyed quenched and tempered steels	≤ 1,300 N/mm²	9	120	75	80	60
Nitriding steels	≤ 1,300 N/mm²	9	120	75	80	60
Tool steels	≤ 1,300 N/mm²	9	120	75	80	60
High-speed steels	≤ 1,300 N/mm²	9	120	75	80	60
Cast metals
Cast iron	≤ 350 HB	15	200	120	130	100
Spheroidal graphite and malleable iron	≤ 350 HB	12	160	100	105	75
Non-ferrous metals
Aluminium	≤ 450 N/mm²	18	250	150	150	110
Aluminium alloys	≤ 450 N/mm²	17	250	150	150	110
Low-alloy copper	≤ 400 N/mm²	17	250	150	150	110
Short-chipping brass	≤ 850 N/mm²	18	250	150	150	110
Long-chipping brass	≤ 850 N/mm²	17	250	150	150	110
Plastics
Plastics, thermosetting		26	350	200	230	160
Plastics, thermoplastic		24	350	200	220	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.

For dia. 5.0-31.0 and dia. 16.0-30.5
Material designation	Tensile strength	v_c	n
			Dia. 5.0-31.0 Art.		Dia. 16.0-30.5 Art.
			Tapping (1st drilling step)	to	Tapping (1st drilling step)	to
Steels
General structural steels	≤ 700 N/mm²	15	950	150	290	150
Unalloyed quenched and tempered steels	≤ 700 N/mm²	15	950	150	290	150
Unalloyed quenched and tempered steels	≤ 900 N/mm²	11	700	110	200	110
Low-alloy quenched and tempered steels	≤ 700 N/mm²	15	950	150	290	150
Low-alloy quenched and tempered steels	≤ 900 N/mm²	11	700	110	200	110
Alloyed quenched and tempered steels	≤ 1,300 N/mm²	9	550	100	180	100
Nitriding steels	≤ 1,300 N/mm²	9	550	100	180	100
Tool steels	≤ 1,300 N/mm²	9	550	100	180	100
High-speed steels	≤ 1,300 N/mm²	9	550	100	180	100
Cast metals
Cast iron	≤ 350 HB	15	950	150	290	150
Spheroidal graphite and malleable iron	≤ 350 HB	12	750	120	240	125
Non-ferrous metals
Aluminium	≤ 450 N/mm²	18	1100	200	360	200
Aluminium alloys	≤ 450 N/mm²	17	1100	200	360	200
Low-alloy copper	≤ 400 N/mm²	17	1100	200	360	200
Short-chipping brass	≤ 850 N/mm²	18	1100	200	360	200
Long-chipping brass	≤ 850 N/mm²	17	1100	200	360	200
Plastics
Plastics, thermosetting		26	1600	300	550	300
Plastics, thermoplastic		24	1500	250	500	250

For dia. 3.0-14.0 and dia. 5.0-20.0
Material designation	Tensile strength	v_c	n
			Dia. 3.0-14.0 Art.		dia. 5.0-20.0 art. and
			Tapping (1st drilling step)	to	Tapping (1st drilling step)	to
Steels
General structural steels	≤ 700 N/mm²	15	1500	350	950	250
Unalloyed quenched and tempered steels	≤ 700 N/mm²	15	1500	350	950	250
Unalloyed quenched and tempered steels	≤ 900 N/mm²	11	1100	300	700	180
Low-alloy quenched and tempered steels	≤ 700 N/mm²	15	1500	350	950	250
Low-alloy quenched and tempered steels	≤ 900 N/mm²	11	1100	300	700	180
Alloyed quenched and tempered steels	≤ 1,300 N/mm²	9	900	200	550	140
Nitriding steels	≤ 1,300 N/mm²	9	900	200	550	140
Tool steels	≤ 1,300 N/mm²	9	900	200	550	140
High-speed steels	≤ 1,300 N/mm²	9	900	200	550	140
Cast metals
Cast iron	≤ 350 HB	15	1500	350	950	250
Spheroidal graphite and malleable iron	≤ 350 HB	12	1250	270	750	190
Non-ferrous metals
Aluminium	≤ 450 N/mm²	18	1800	450	1100	350
Aluminium alloys	≤ 450 N/mm²	17	1800	400	1100	350
Low-alloy copper	≤ 400 N/mm²	17	1800	400	1100	350
Short-chipping brass	≤ 850 N/mm²	18	1800	450	1100	350
Long-chipping brass	≤ 850 N/mm²	17	1800	400	1100	350
Plastics
Plastics, thermosetting		26	2600	600	1600	400
Plastics, thermoplastic		24	2500	550	1500	400

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