SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D4,9

SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D4,9 - 1

SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D4,9 - 2

SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D4,9 - 3

SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D4,9 - 4

SMART STEP EU+ HSCo twist drill bit DIN 338

Name: SMART STEP EU+ HSCo twist drill bit DIN 338
Brand: Würth
SKU: 0626910490

Twist drill bit SMART STEP EU+ HSCo DIN 338
DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D4,9
ZEBRA SMART STEP

Art.-no. 0626910490

EAN 4099618280184

All versions

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SMART STEP EU+ HSCo twist drill bit DIN 338

Art.-no. 0626910490

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x 10 pcs

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The universal SMART STEP twist drill bit with patent-pending stepped drill bit tip geometry with extremely uneven pitch (from dia. 2.5 mm) for even faster, more comfortable drilling with unrivalled precision and service life

Extremely unequal pitch (EU+)

Up to 50 % longer service life

Significantly more comfortable drilling with less vibration, even less effort required and perfect tool guidance (up to 60 % less torque)

Up to 20 % lower energy consumption

Up to 15 % faster drilling progress

Precise, circular drilling in almost all materials without tearing or splintering

Extremely comfortable drilling

Precise tapping without running off centre

Simple boring or enlarging of an existing drill hole

Angled drilling possible

No rattling or catching - even in thin-walled material

Burr-free hole exit

Significantly faster and more energy-efficient drilling compared to conventional HSCo twist drill bits

The first twist drill bit to enable precise, hand-guided drilling up to dia. 20 mm without pre-drilling

Shank reduced to dia. 12.7 mm from > 13.0 mm bore diameter for use in all standard three-jaw drill chucks

Ideal for drilling out rivets and stud bolts

Ideal for drilling in round material or pipes with stringent requirements for centring, precision and service life, e.g. in railing construction

3-flat shank (from dia. 4 mm)

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

Available exclusively from Würth

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

Notice

For blind holes, please note the extended drill tip (see dimension l3)!

The steps of the innovative point geometry drill gradually to achieve the required diameter. To achieve this, the chip is broken into small individual chips by several main cutting edges, thus ensuring optimal chip removal. The result is highly precise, circular drilling.

The use of several cutting edges at the same time enables very fast, comfortable working and a long service life.

Product information

Würth Catalogue

Datasheets(X)

Certificates/ Documents

Application area

Ideal for use in cordless drills as well as on hand-held, box column and pillar drills

For universal use in almost all materials, such as stainless steel (e.g. V2A, V4A), heat-resistant steels and titanium. Also for general applications in conventional steel up to 1,300 N/mm², as well as in cast iron, aluminium, plastic, non-ferrous metals and hard and soft wood.

Perfect for drilling in round tubes (e.g. in railing construction), for drilling out stud bolts, rivet holes, for drilling sheet metal and thin-walled profile materials

Ideal for high-precision, comfortable and fast working in solid material

Ideal for large drill hole diameters


Suitable for machine type	Drill Cordless screwdrivers Pedestal drilling machine
Material to be processed	Steel Cast iron Stainless steel Titanium Non-ferrous metal Wood Hardwood
Quality	ZEBRA-Premium
Standard / drilling depth	DIN 338 / 5xD
Diameter (Ø)	4.9 mm
Length (l1)	86 mm
Chip flute length (l2)	52 mm
Drill tip length (l3)	3.4 mm
Shank diameter	4.9 mm
Shank style	3-face shank
Surface	Oxide finish
Cutting material	HSCo
Service life (points system)	3 of 4 points
Drilling speed (point system)	4 of 4 points
Bore hole quality (point system) ( )	4 of 4 points
Versatility (points system)	4 of 4 points
Drilling behaviour (point system)	4 of 4 points
Suitable for drill (points system)	4 of 4 points
Suitable for cordless drills (points system)	4 of 4 points
Suitable for upright drilling machine (points system)	4 of 4 points
Self-centring	Yes
Suitable for tensile strength up to	1300 N/mm²
Material of sub-group	General structural steels Non-alloyed tempering steels Alloyed tempering steels Nitriding steels Tool steels High-speed steels Cast iron Ductile iron Malleable cast iron White cast iron Stainless steels, sulphurated Stainless steels, martensitic Stainless steels, austenitic Titanium Titanium alloys Spring steels Aluminium Aluminium alloys Aluminium casting alloys (<10% silicon) Magnesium alloys Copper, low-alloyed Brass, short-chipping Brass, long-chipping Bronze, short-chipping Bronze, long-chipping Plastics, thermoset Plastics, thermoplastic

Cutting values for SMART STEP EU+ HSCo DIN 338 twist drill bit
For dia. 1.0-2.5
Material designation	Tensile strength			from dia. 1.0			from dia. 2.0			from dia. 2.5
		v_c		n		f	n		f	n		f
		from	to	from	to		from	to		from	to
General structural steels	≤ 850 N/mm²	18	27	5732	8598	0,01	2866	4299	0,012	2292	3439	0,015
Unalloyed hardened steels	≤ 850 N/mm²	18	27	5732	8598	0,01	2866	4299	0,012	2292	3439	0,015
Low-alloy hardened steels	≤ 850 N/mm²	18	27	5732	8598	0,01	2866	4299	0,012	2292	3439	0,015
Unalloyed hardened steels	≤ 1,000 N/mm²	15	23	4777	7324	0,008	2388	3662	0,01	1910	2929	0,012
Low-alloy hardened steels	≤ 1,000 N/mm²	15	23	4777	7324	0,008	2388	3662	0,01	1910	2929	0,012
Alloyed hardened steels	≤ 1,300 N/mm²	10	15	3184	4777	0,008	1592	2388	0,01	1273	1910	0,012
Nitriding steels	≤ 1,300 N/mm²	10	15	3184	4777	0,008	1592	2388	0,01	1273	1910	0,012
Tool steels	≤ 1,300 N/mm²	10	15	3184	4777	0,008	1592	2388	0,01	1273	1910	0,012
High-speed steels	≤ 1,300 N/mm²	10	15	3184	4777	0,008	1592	2388	0,01	1273	1910	0,012
Cast iron	≤ 350 HB	15	23	4777	7324	0,008	2388	3662	0,01	1910	2929	0,012
Nodular graphite and malleable iron	≤ 350 HB	15	23	4777	7324	0,008	2388	3662	0,01	1910	2929	0,012
Stainless steels	1,300 N/mm²	8	12	2547	3821	0,01	1273	1910	0,012	1019	1518	0,014
Titanium	850 N/mm²	6	10	1910	3183	0,008	955	1592	0,01	764	1273	0,012
Aluminium	≤ 600 N/mm²	35	45	11146	14331	0,01	5573	7165	0,012	4458	5732	0,015
Thermosetting plastics		15	23	4777	7324	0,01	2388	3662	0,012	1910	2929	0,015
Thermoplastic plastics		15	23	4777	7324	0,01	2388	3662	0,012	1910	2929	0,015
Soft and light wood		21	30	6688	9554	0,012	3344	4777	0,014	2675	3821	0,017
Compact and hard wood		18	27	5732	8598	0,01	2866	4299	0,013	2292	3439	0,015

For dia. 3.15-5.0
Material designation	Tensile strength			from dia. 3.15			from dia. 4.0			from dia. 5.0
		v_c		n		f	n		f	n		f
		from	to	from	to		from	to		from	to
General structural steels	≤ 850 N/mm²	18	27	1819	2729	0,017	1433	2149	0,02	1146	1719	0,025
Unalloyed hardened steels	≤ 850 N/mm²	18	27	1819	2729	0,017	1433	2149	0,02	1146	1719	0,025
Low-alloy hardened steels	≤ 850 N/mm²	18	27	1819	2729	0,017	1433	2149	0,02	1146	1719	0,025
Unalloyed hardened steels	≤ 1,000 N/mm²	15	23	1516	2325	0,015	1194	1831	0,018	955	1464	0,021
Low-alloy hardened steels	≤ 1,000 N/mm²	15	23	1516	2325	0,015	1194	1831	0,018	955	1464	0,021
Alloyed hardened steels	≤ 1,300 N/mm²	10	15	1011	1516	0,015	796	1194	0,018	636	955	0,021
Nitriding steels	≤ 1,300 N/mm²	10	15	1011	1516	0,015	796	1194	0,018	636	955	0,021
Tool steels	≤ 1,300 N/mm²	10	15	1011	1516	0,015	796	1194	0,018	636	955	0,021
High-speed steels	≤ 1,300 N/mm²	10	15	1011	1516	0,015	796	1194	0,018	636	955	0,021
Cast iron	≤ 350 HB	15	23	1516	2325	0,015	1194	1831	0,018	955	1464	0,021
Nodular graphite and malleable iron	≤ 350 HB	15	23	1516	2325	0,015	1194	1831	0,018	955	1464	0,021
Stainless steels	1,300 N/mm²	8	12	808	1213	0,017	636	955	0,02	509	764	0,023
Titanium	850 N/mm²	6	10	606	1011	0,015	477	796	0,018	382	637	0,021
Aluminium	≤ 600 N/mm²	35	45	3538	4549	0,016	2786	3582	0,02	2229	2866	0,025
Thermosetting plastics		15	23	1516	2325	0,016	1194	1831	0,02	955	1464	0,025
Thermoplastic plastics		15	23	1516	2325	0,016	1194	1831	0,02	955	1464	0,025
Soft and light wood		21	30	2123	3033	0,018	1672	2388	0,023	1338	1910	0,028
Compact and hard wood		18	27	1819	2729	0,018	1433	2149	0,022	1146	1719	0,027

For dia. 6.3-8.0
Material designation	Tensile strength			from dia. 6.3			from dia. 8.0
		v_c		n		f	n		f
		from	to	from	to		from	to
General structural steels	≤ 850 N/mm²	18	27	909	1364	0,027	716	1074	0,03
Unalloyed hardened steels	≤ 850 N/mm²	18	27	909	1364	0,027	716	1074	0,03
Low-alloy hardened steels	≤ 850 N/mm²	18	27	909	1364	0,027	716	1074	0,03
Unalloyed hardened steels	≤ 1,000 N/mm²	15	23	758	1162	0,025	597	915	0,028
Low-alloy hardened steels	≤ 1,000 N/mm²	15	23	758	1162	0,025	597	915	0,028
Alloyed hardened steels	≤ 1,300 N/mm²	10	15	505	758	0,025	398	597	0,028
Nitriding steels	≤ 1,300 N/mm²	10	15	505	758	0,025	398	597	0,028
Tool steels	≤ 1,300 N/mm²	10	15	505	758	0,025	398	597	0,028
High-speed steels	≤ 1,300 N/mm²	10	15	505	758	0,025	398	597	0,028
Cast iron	≤ 350 HB	15	23	758	1162	0,025	597	915	0,028
Nodular graphite and malleable iron	≤ 350 HB	15	23	758	1162	0,025	597	915	0,028
Stainless steels	1,300 N/mm²	8	12	404	606	0,027	318	477	0,03
Titanium	850 N/mm²	6	10	303	505	0,025	239	398	0,028
Aluminium	≤ 600 N/mm²	35	45	1769	2274	0,027	1393	1791	0,03
Thermosetting plastics		15	23	758	1162	0,027	597	915	0,03
Thermoplastic plastics		15	23	758	1162	0,027	597	915	0,03
Soft and light wood		21	30	1061	1516	0,03	836	1194	0,033
Compact and hard wood		18	27	909	1364	0,03	716	1074	0,032

For dia. 10.0-12.5
Material designation	Tensile strength			from dia. 10.0						from dia. 12.5
		v_c		n		f	n		f	n		f	n		f
		from	to	from	to		from	to		from	to		from	to
				≤ dia. 6			> dia. 6			≤ dia. 6.5			> dia. 6.5
General structural steels	≤ 850 N/mm²	18	27	955	1433	0,027	573	859	0,035	881	1322	0,027	458	687	0,038
Unalloyed hardened steels	≤ 850 N/mm²	18	27	955	1433	0,027	573	859	0,035	881	1322	0,027	458	687	0,038
Low-alloy hardened steels	≤ 850 N/mm²	18	27	955	1433	0,027	573	859	0,035	881	1322	0,027	458	687	0,038
Unalloyed hardened steels	≤ 1,000 N/mm²	15	23	796	1220	0,025	477	732	0,031	734	1126	0,025	382	585	0,035
Low-alloy hardened steels	≤ 1,000 N/mm²	15	23	796	1220	0,025	477	732	0,031	734	1126	0,025	382	585	0,035
Alloyed hardened steels	≤ 1,300 N/mm²	10	15	530	796	0,025	318	477	0,031	489	734	0,025	254	382	0,035
Nitriding steels	≤ 1,300 N/mm²	10	15	530	796	0,025	318	477	0,031	489	734	0,025	254	382	0,035
Tool steels	≤ 1,300 N/mm²	10	15	530	796	0,025	318	477	0,031	489	734	0,025	254	382	0,035
High-speed steels	≤ 1,300 N/mm²	10	15	530	796	0,025	318	477	0,031	489	734	0,025	254	382	0,035
Cast iron	≤ 350 HB	15	23	796	1220	0,025	477	732	0,031	734	1126	0,025	382	585	0,035
Nodular graphite and malleable iron	≤ 350 HB	15	23	796	1220	0,025	477	732	0,031	734	1126	0,025	382	585	0,035
Stainless steels	1,300 N/mm²	8	12	424	636	0,027	254	382	0,031	391	587	0,027	203	305	0,037
Titanium	850 N/mm²	6	10	318	530	0,025	191	318	0,031	293	489	0,027	153	255	0,035
Aluminium	≤ 600 N/mm²	35	45	1857	2388	0,027	1114	1433	0,035	1714	2204	0,027	891	1146	0,038
Thermosetting plastics		15	23	796	1220	0,027	477	732	0,035	734	1126	0,027	382	585	0,038
Thermoplastic plastics		15	23	796	1220	0,027	477	732	0,035	734	1126	0,027	382	585	0,038
Soft and light wood		21	30	1114	1592	0,03	668	955	0,038	1028	1469	0,03	535	764	0,041
Compact and hard wood		18	27	955	1433	0,03	573	859	0,036	881	1322	0,03	458	687	0,038

For dia. 16.0-20.0
Material designation	Tensile strength			from dia. 16.0						from dia. 20.0
		v_c		n		f	n		f	n		f	n		f
		from	to	from	to		from	to		from	to		from	to
				≤ dia. 8			> dia. 8			≤ dia. 10			> dia. 10
General structural steels	≤ 850 N/mm²	18	27	716	1074	0,03	358	537	0,04	573	859	0,035	286	430	0,042
Unalloyed hardened steels	≤ 850 N/mm²	18	27	716	1074	0,03	358	537	0,04	573	859	0,035	286	430	0,042
Low-alloy hardened steels	≤ 850 N/mm²	18	27	716	1074	0,03	358	537	0,04	573	859	0,035	286	430	0,042
Unalloyed hardened steels	≤ 1,000 N/mm²	15	23	597	915	0,028	298	457	0,038	477	732	0,031	238	366	0,04
Low-alloy hardened steels	≤ 1,000 N/mm²	15	23	597	915	0,028	298	457	0,038	477	732	0,031	238	366	0,04
Alloyed hardened steels	≤ 1,300 N/mm²	10	15	398	597	0,028	199	298	0,038	318	477	0,031	159	238	0,04
Nitriding steels	≤ 1,300 N/mm²	10	15	398	597	0,028	199	298	0,038	318	477	0,031	159	238	0,04
Tool steels	≤ 1,300 N/mm²	10	15	398	597	0,028	199	298	0,038	318	477	0,031	159	238	0,04
High-speed steels	≤ 1,300 N/mm²	10	15	398	597	0,028	199	298	0,038	318	477	0,031	159	238	0,04
Cast iron	≤ 350 HB	15	23	597	915	0,028	298	457	0,038	477	732	0,031	238	366	0,04
Nodular graphite and malleable iron	≤ 350 HB	15	23	597	915	0,028	298	457	0,038	477	732	0,031	238	366	0,04
Stainless steels	1,300 N/mm²	8	12	318	477	0,03	159	238	0,04	254	382	0,031	109	168	0,042
Titanium	850 N/mm²	6	10	239	398	0,028	119	199	0,038	191	318	0,031	79	129	0,04
Aluminium	≤ 600 N/mm²	35	45	1393	1791	0,03	696	895	0,04	1114	1433	0,035	557	716	0,042
Thermosetting plastics		15	23	597	915	0,03	298	457	0,04	477	732	0,035	238	366	0,042
Thermoplastic plastics		15	23	597	915	0,03	298	457	0,04	477	732	0,035	238	366	0,042
Soft and light wood		21	30	836	1194	0,033	418	597	0,044	668	955	0,038	334	477	0,046
Compact and hard wood		18	27	716	1074	0,032	358	537	0,041	573	859	0,036	286	430	0,043

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

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