Twist drill bit HSCO DIN 338 SMART STEP - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D9,5

Twist drill bit HSCO DIN 338 SMART STEP - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D9,5 - 1

Twist drill bit HSCO DIN 338 SMART STEP - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D9,5 - 2

Twist drill bit HSCO DIN 338 SMART STEP - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D9,5 - 3

Twist drill bit HSCO DIN 338 SMART STEP - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D9,5 - 4

Twist drill bit HSCO DIN 338 SMART STEP

Name: Twist drill bit HSCO DIN 338 SMART STEP
Brand: Würth
SKU: 0626940950

Twist drill bit HSCo DIN 338 SMART STEP
DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D9,5
ZEBRA SMART STEP

Art.-no. 0626940950

EAN 4062856816392

All versions

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Twist drill bit HSCO DIN 338 SMART STEP

Art.-no. 0626940950

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The multi-performance drill bit with unique SMART STEP technology (from dia. 2.5 mm) for manually drilled high-precision circular holes in almost all materials, such as stainless steel (e.g. V2A, V4A), heat-resistant steels and titanium. Also suitable for general applications in conventional steel up to 1200 N/mm² strength as well as in cast iron, non-ferrous metals, hardwood and softwood.

Newly designed stepped drill bit tip geometry (from dia. 2.5 mm)

Significantly faster than conventional twist drill bits

Significantly less effort required when drilling compared to conventional twist drill bits

Precise, circular drilling without centre-punching

Extremely comfortable drilling

Saves pre-drilling, precise tapping without running off centre

Angled drilling possible

Simple boring or enlarging of an existing drill hole

Ideal for drilling out rivets

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

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

Optimised stepped drill bit tip geometry

From drill diameter > 13.0 mm, shank reduced to dia. 12.7 mm for use in all common 3-jaw drill chucks

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

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)!

Product information

Würth Catalogue

Datasheets(X)

Certificates/ Documents

Application area

Perfect for drilling round pipes (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 drilling in solid materials

Ideal for large bore 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)	9.5 mm
Length (l1)	125 mm
Chip flute length (l2)	81 mm
Drill tip length (l3)	8.5 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
Suitable for milling-drilling centre (points system)	0 - not applicable
Self-centring	Yes
Suitable for tensile strength up to	1200 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

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

For dia. 12.5–20.0
Material designation	Tensile strength			from dia. 12.5			from dia. 16.0			from dia. 20.0
		v_c		n		f	n		f	n		f
		from	to	from	to		from	to		from	to
General structural steels	≤ 850 N/mm²	18	27	458	687	0,040	358	537	0,042	286	430	0,044
Unalloyed heat-treated steels	≤ 850 N/mm²	18	27	458	687	0,040	358	537	0,042	286	430	0,044
Low-alloy heat-treated steels	≤ 850 N/mm²	18	27	458	687	0,040	358	537	0,042	286	430	0,044
Unalloyed heat-treated steels	≤ 1000 N/mm²	15	23	382	585	0,037	298	457	0,040	238	366	0,042
Low-alloy heat-treated steels	≤ 1000 N/mm²	15	23	382	585	0,037	298	457	0,040	238	366	0,042
Alloyed heat-treated steels	≤ 1000 N/mm²	10	15	254	382	0,037	199	298	0,040	159	238	0,042
Nitriding steels	≤ 1000 N/mm²	10	15	254	382	0,037	199	298	0,040	159	238	0,042
Tool steels	≤ 1000 N/mm²	10	15	254	382	0,037	199	298	0,040	159	238	0,042
High-speed steels	≤ 1000 N/mm²	10	15	254	382	0,037	199	298	0,040	159	238	0,042
Cast iron	≤ 350 HB	15	23	382	585	0,037	298	457	0,040	238	366	0,042
Spheroidal graphite and malleable iron	≤ 350 HB	15	23	382	585	0,037	298	457	0,040	238	366	0,042
Stainless steels	1,200 N/mm²	8	12	203	305	0,037	159	238	0,04	109	168	0,042
Titanium	850 N/mm²	6	10	153	255	0,035	119	199	0,038	79	129	0,04
Aluminium	≤ 600 N/mm²	35	45	891	1146	0,040	696	895	0,041	557	716	0,044
Plastics, duroplastic		15	23	382	585	0,041	298	457	0,042	238	366	0,044
Plastics, thermoplastic		15	23	382	585	0,041	298	457	0,042	238	366	0,044
Softwood		21	30	535	764	0,042	418	597	0,045	334	477	0,047
Hardwood		18	27	458	687	0,039	358	537	0,042	286	430	0,044

Cutting parameters for twist drill bit HSCo DIN 338 SMART STEP
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	0,011	2866	4299	0,013	2292	3439	0,017
Unalloyed heat-treated steels	≤ 850 N/mm²	18	27	5732	8598	0,011	2866	4299	0,013	2292	3439	0,017
Low-alloy heat-treated steels	≤ 850 N/mm²	18	27	5732	8598	0,011	2866	4299	0,013	2292	3439	0,017
Unalloyed heat-treated steels	≤ 1000 N/mm²	15	23	4777	7324	0,01	2388	3662	0,012	1910	2929	0,014
Low-alloy heat-treated steels	≤ 1000 N/mm²	15	23	4777	7324	0,01	2388	3662	0,012	1910	2929	0,014
Alloyed heat-treated steels	≤ 1000 N/mm²	10	15	3184	4777	0,01	1592	2388	0,012	1273	1910	0,014
Nitriding steels	≤ 1000 N/mm²	10	15	3184	4777	0,01	1592	2388	0,012	1273	1910	0,014
Tool steels	≤ 1000 N/mm²	10	15	3184	4777	0,01	1592	2388	0,012	1273	1910	0,014
High-speed steels	≤ 1000 N/mm²	10	15	3184	4777	0,01	1592	2388	0,012	1273	1910	0,014
Cast iron	≤ 350 HB	15	23	4777	7324	0,01	2388	3662	0,012	1910	2929	0,014
Spheroidal graphite and malleable iron	≤ 350 HB	15	23	4777	7324	0,01	2388	3662	0,012	1910	2929	0,014
Stainless steels	1,200 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	0,011	5573	7165	0,013	4458	5732	0,016
Plastics, duroplastic		15	23	4777	7324	0,012	2388	3662	0,014	1910	2929	0,017
Plastics, thermoplastic		15	23	4777	7324	0,012	2388	3662	0,014	1910	2929	0,017
Softwood		21	30	6688	9554	0,013	3344	4777	0,015	2675	3821	0,018
Hardwood		18	27	5732	8598	0,011	2866	4299	0,014	2292	3439	0,016

For dia. 6.3–10.0
Material designation	Tensile strength			from dia. 6.3			from dia. 8.0			from dia. 10.0
		v_c		n		f	n		f	n		f
		from	to	from	to		from	to		from	to
General structural steels	≤ 850 N/mm²	18	27	909	1364	0,029	716	1074	0,032	573	859	0,037
Unalloyed heat-treated steels	≤ 850 N/mm²	18	27	909	1364	0,029	716	1074	0,032	573	859	0,037
Low-alloy heat-treated steels	≤ 850 N/mm²	18	27	909	1364	0,029	716	1074	0,032	573	859	0,037
Unalloyed heat-treated steels	≤ 1000 N/mm²	15	23	758	1162	0,027	597	915	0,030	477	732	0,033
Low-alloy heat-treated steels	≤ 1000 N/mm²	15	23	758	1162	0,027	597	915	0,030	477	732	0,033
Alloyed heat-treated steels	≤ 1000 N/mm²	10	15	505	758	0,027	398	597	0,030	318	477	0,033
Nitriding steels	≤ 1000 N/mm²	10	15	505	758	0,027	398	597	0,030	318	477	0,033
Tool steels	≤ 1000 N/mm²	10	15	505	758	0,027	398	597	0,030	318	477	0,033
High-speed steels	≤ 1000 N/mm²	10	15	505	758	0,027	398	597	0,030	318	477	0,033
Cast iron	≤ 350 HB	15	23	758	1162	0,027	597	915	0,030	477	732	0,033
Spheroidal graphite and malleable iron	≤ 350 HB	15	23	758	1162	0,027	597	915	0,030	477	732	0,033
Stainless steels	1,200 N/mm²	8	12	404	606	0,027	318	477	0,03	254	382	0,033
Titanium	850 N/mm²	6	10	303	505	0,025	239	398	0,028	191	318	0,031
Aluminium	≤ 600 N/mm²	35	45	1769	2274	0,029	1393	1791	0,032	1114	1433	0,037
Plastics, duroplastic		15	23	758	1162	0,030	597	915	0,033	477	732	0,038
Plastics, thermoplastic		15	23	758	1162	0,030	597	915	0,033	477	732	0,038
Softwood		21	30	1061	1516	0,031	836	1194	0,034	668	955	0,039
Hardwood		18	27	909	1364	0,031	716	1074	0,033	573	859	0,037

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	0,019	1433	2149	0,022	1146	1719	0,027
Unalloyed heat-treated steels	≤ 850 N/mm²	18	27	1819	2729	0,019	1433	2149	0,022	1146	1719	0,027
Low-alloy heat-treated steels	≤ 850 N/mm²	18	27	1819	2729	0,019	1433	2149	0,022	1146	1719	0,027
Unalloyed heat-treated steels	≤ 1000 N/mm²	15	23	1516	2325	0,017	1194	1831	0,020	955	1464	0,023
Low-alloy heat-treated steels	≤ 1000 N/mm²	15	23	1516	2325	0,017	1194	1831	0,020	955	1464	0,023
Alloyed heat-treated steels	≤ 1000 N/mm²	10	15	1011	1516	0,017	796	1194	0,020	636	955	0,023
Nitriding steels	≤ 1000 N/mm²	10	15	1011	1516	0,017	796	1194	0,020	636	955	0,023
Tool steels	≤ 1000 N/mm²	10	15	1011	1516	0,017	796	1194	0,020	636	955	0,023
High-speed steels	≤ 1000 N/mm²	10	15	1011	1516	0,017	796	1194	0,020	636	955	0,023
Cast iron	≤ 350 HB	15	23	1516	2325	0,017	1194	1831	0,020	955	1464	0,023
Spheroidal graphite and malleable iron	≤ 350 HB	15	23	1516	2325	0,017	1194	1831	0,020	955	1464	0,023
Stainless steels	1,200 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	0,018	2786	3582	0,022	2229	2866	0,027
Plastics, duroplastic		15	23	1516	2325	0,019	1194	1831	0,023	955	1464	0,028
Plastics, thermoplastic		15	23	1516	2325	0,019	1194	1831	0,023	955	1464	0,028
Softwood		21	30	2123	3033	0,019	1672	2388	0,024	1338	1910	0,029
Hardwood		18	27	1819	2729	0,019	1433	2149	0,023	1146	1719	0,028

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