HSS DIN 338 SMART STEP twist drill bit - DRL-TWST-MET-DIN338-HSS-SMARTSTEP-10,0MM

HSS DIN 338 SMART STEP twist drill bit - DRL-TWST-MET-DIN338-HSS-SMARTSTEP-10,0MM - 1

HSS DIN 338 SMART STEP twist drill bit - DRL-TWST-MET-DIN338-HSS-SMARTSTEP-10,0MM - 2

HSS DIN 338 SMART STEP twist drill bit - DRL-TWST-MET-DIN338-HSS-SMARTSTEP-10,0MM - 3

HSS DIN 338 SMART STEP twist drill bit - DRL-TWST-MET-DIN338-HSS-SMARTSTEP-10,0MM - 4

HSS DIN 338 SMART STEP twist drill bit

Name: HSS DIN 338 SMART STEP twist drill bit
Brand: Würth
SKU: 0624931000

Twist drill HSS DIN 338 SMART STEP
DRL-TWST-MET-DIN338-HSS-SMARTSTEP-10,0MM
ZEBRA SMART STEP

Art.-no. 0624931000

EAN 4061975499226

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HSS DIN 338 SMART STEP twist drill bit

Art.-no. 0624931000

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The manually operated high-performance drill with unique SMART STEP technology (from dia. 2.5 mm) for high-precision circular drill holes in steel up to 1000 N/mm², aluminium, plastic, non-ferrous metals, hard and soft wood.

The original SMART STEP: the first twist drill bit with stepped drill bit tip geometry (from dia. 2.5 mm)

Precise, circular drilling

Extremely comfortable drilling

Saves pre-drilling, precise tapping without running off centre

Angled drilling possible

Simple boring or enlarging of an existing drill hole

Significantly faster than conventional twist drill bits with point thinning

Ideal for drilling out rivets and stud bolts

The first twist drill bit to enable precise, hand-guided drilling up to dia. 20 mm without pre-drilling, and when used on a box column drill, even allows precise drilling up to dia. 26.5 mm without pre-drilling

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 bores, please note the extended drill tip (see dimension l3)!

Product information

Würth Catalogue

Datasheets(X)

Certificates/ Documents

Application area

Perfect for rivet holes, drilling out stud bolts, for drilling sheet metal and thin-walled profile materials (e.g. aluminium/window profiles).

High quality of drill holes and significantly longer service life compared to conventional twist wood drill bits for drilling holes in wood.

Ideal for high-precision, comfortable and quick work in solid materials (e.g. in steel with strength of up to 1000 N/mm², aluminium and plastics).


Suitable for machine type	Drill Cordless screwdrivers Pedestal drilling machine
Material to be processed	Steel Cast iron Non-ferrous metal Wood Hardwood
Quality	ZEBRA-Premium
Standard / drilling depth	DIN 338 / 5xD
Diameter (Ø)	10 mm
Length (l1)	133 mm
Chip flute length (l2)	87 mm
Drill tip length (l3)	10 mm
Shank diameter	10 mm
Shank style	3-face shank
Surface	Multiple refined
Cutting material	HSS
Type	SMART STEP
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)	3 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	1000 N/mm²
Material of sub-group	General structural steels Non-alloyed tempering steels Cast iron Ductile iron Malleable cast iron Magnesium alloys Copper, low-alloyed Brass, short-chipping Brass, long-chipping Plastics, thermoset Plastics, thermoplastic

Cutting values
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
Steels
General structural steels	≤ 850 N/mm²	25	37	7,958	9,549	0,016	3,979	4,775	0,050	3,183	3,820	0,063
Unalloyed heat-treated steels	≤ 850 N/mm²	25	37	7,958	9,549	0,016	3,979	4,775	0,050	3,183	3,820	0,063
Low-alloy heat-treated steels	≤ 850 N/mm²	25	37	7,958	9,549	0,016	3,979	4,775	0,050	3,183	3,820	0,063
Unalloyed heat-treated steels	≤ 1,000 N/mm²	22	31	7,003	7,958	0,014	3,501	3,979	0,040	2,801	3,183	0,050
Low-alloy heat-treated steels	≤ 1,000 N/mm²	22	31	7,003	7,958	0,014	3,501	3,979	0,040	2,801	3,183	0,050
Alloyed heat-treated steels	≤ 1,000 N/mm²	10	20	3,183	5,093	0,012	1,592	2,546	0,032	1,273	2,037	0,040
Nitriding steels	≤ 1,000 N/mm²	10	20	3,183	5,093	0,012	1,592	2,546	0,032	1,273	2,037	0,040
Tool steels	≤ 1,000 N/mm²	10	20	3,183	5,093	0,012	1,592	2,546	0,032	1,273	2,037	0,040
High-speed steels	≤ 1,000 N/mm²	10	20	3,183	5,093	0,012	1,592	2,546	0,032	1,273	2,037	0,040
Cast metals
Cast iron	≤ 350 HB	22	31	8,913	10,186	0,018	4,456	5,093	0,063	3,565	4,074	0,080
Spheroidal graphite and malleable iron	≤ 350 HB	22	31	7,003	7,958	0,018	3,501	3,979	0,063	2,801	3,183	0,080
Non-ferrous metal
Aluminium	≤ 600 N/mm²	40	60	12,732	19,099	0,018	6,366	9,549	0,063	5,093	7,639	0,080
Plastics
Plastics, thermosetting		20	37	6,366	9,549	0,016	3,183	4,775	0,050	2,546	3,820	0,063
Plastics, thermoplastic		20	37	4,777	9,549	0,016	3,183	4,775	0,050	2,546	3,820	0,063
Wood
Softwood		25	37	7,958	9,549	0,016	3,979	4,775	0,050	3,183	3,820	0,063
Hardwood
Hardwood		22	31	7,003	7,958	0,014	3,501	3,979	0,040	2,801	3,183	0,050

Cutting values
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
Steels
General structural steels	≤ 850 N/mm²	25	37	2,526	3,032	0,080	1,989	2,387	0,100	1,831	2,197	0,115
Unalloyed heat-treated steels	≤ 850 N/mm²	25	37	2,526	3,032	0,080	1,989	2,387	0,100	1,831	2,197	0,115
Low-alloy heat-treated steels	≤ 850 N/mm²	25	37	2,526	3,032	0,080	1,989	2,387	0,100	1,831	2,197	0,115
Unalloyed heat-treated steels	≤ 1,000 N/mm²	22	31	2,223	2,526	0,063	1,751	1,989	0,080	1,611	1,831	0,092
Low-alloy heat-treated steels	≤ 1,000 N/mm²	22	31	2,223	2,526	0,063	1,751	1,989	0,080	1,611	1,831	0,092
Alloyed heat-treated steels	≤ 1,000 N/mm²	10	20	1,011	1,617	0,050	796	1,273	0,063	733	1,172	0,072
Nitriding steels	≤ 1,000 N/mm²	10	20	1,011	1,617	0,050	796	1,273	0,063	733	1,172	0,072
Tool steels	≤ 1,000 N/mm²	10	20	1,011	1,617	0,050	796	1,273	0,063	733	1,172	0,072
High-speed steels	≤ 1,000 N/mm²	10	20	1,011	1,617	0,050	796	1,273	0,063	733	1,172	0,072
Cast metals
Cast iron	≤ 350 HB	22	31	2,829	3,234	0,100	2,228	2,546	0,125	2,050	2,343	0,144
Spheroidal graphite and malleable iron	≤ 350 HB	22	31	2,223	2,526	0,100	1,751	1,989	0,125	1,611	1,831	0,144
Non-ferrous metal
Aluminium	≤ 600 N/mm²	40	60	4,042	6,063	0,100	3,183	4,775	0,125	2,546	3,820	0,125
Plastics
Plastics, thermosetting		20	37	2,021	3,032	0,080	1,592	2,387	0,100	1,464	2,197	0,115
Plastics, thermoplastic		20	37	2,021	3,032	0,080	1,592	2,387	0,100	1,464	2,197	0,115
Wood
Softwood		25	37	2,526	3,032	0,080	1,989	2,387	0,100	1,831	2,197	0,115
Hardwood
Hardwood		22	31	2,223	2,526	0,063	1,751	1,989	0,080	1,611	1,831	0,092

Cutting values
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
Steels
General structural steels	≤ 850 N/mm²	25	37	1,642	1,971	0,163	1,294	1,552	0,208	1,035	1,242	0,260
Unalloyed heat-treated steels	≤ 850 N/mm²	25	37	1,642	1,971	0,163	1,294	1,552	0,208	1,035	1,242	0,260
Low-alloy heat-treated steels	≤ 850 N/mm²	25	37	1,642	1,971	0,163	1,294	1,552	0,208	1,035	1,242	0,260
Unalloyed heat-treated steels	≤ 1,000 N/mm²	22	31	1,446	1,642	0,130	1,138	1,294	0,163	910	1,035	0,208
Low-alloy heat-treated steels	≤ 1,000 N/mm²	22	31	1,446	1,642	0,130	1,138	1,294	0,163	910	1,035	0,208
Alloyed heat-treated steels	≤ 1,000 N/mm²	10	20	657	1,050	0,104	517	828	0,130	413	662	0,163
Nitriding steels	≤ 1,000 N/mm²	10	20	657	1,050	0,104	517	828	0,130	413	662	0,163
Tool steels	≤ 1,000 N/mm²	10	20	657	1,050	0,104	517	828	0,130	413	662	0,163
High-speed steels	≤ 1,000 N/mm²	10	20	657	1,050	0,104	517	828	0,130	413	662	0,163
Cast metals
Cast iron	≤ 350 HB	22	31	1,840	2,102	0,208	1,448	1,655	0,260	1,158	1,325	0,325
Spheroidal graphite and malleable iron	≤ 350 HB	22	31	1,446	1,642	0,208	1,138	1,294	0,260	910	1,035	0,325
Non-ferrous metal
Aluminium	≤ 600 N/mm²	40	60	2,021	3,032	0,160	1,592	2,387	0,200	1,273	1,910	0,250
Plastics
Plastics, thermosetting		20	37	1,314	1,971	0,163	1,035	1,552	0,208	828	1,242	0,260
Plastics, thermoplastic		20	37	1,314	1,971	0,163	1,035	1,552	0,208	828	1,242	0,260
Wood
Softwood		25	37	1,642	1,971	0,163	1,294	1,552	0,208	1,035	1,242	0,260
Hardwood
Hardwood		22	31	1,446	1,642	0,130	1,138	1,294	0,163	910	1,035	0,208

Cutting values
For dia. 12.5
Material designation	Tensile strength			From dia. 12.5
		v_c		n		f
		from	to	from	to
Steels
General structural steels	≤ 850 N/mm²	25	37	796	955	0,250
Unalloyed heat-treated steels	≤ 850 N/mm²	25	37	796	955	0,250
Low-alloy heat-treated steels	≤ 850 N/mm²	25	37	796	955	0,250
Unalloyed heat-treated steels	≤ 1,000 N/mm²	22	31	700	796	0,200
Low-alloy heat-treated steels	≤ 1,000 N/mm²	22	31	700	796	0,200
Alloyed heat-treated steels	≤ 1,000 N/mm²	10	20	319	509	0,156
Nitriding steels	≤ 1,000 N/mm²	10	20	319	509	0,156
Tool steels	≤ 1,000 N/mm²	10	20	319	509	0,156
High-speed steels	≤ 1,000 N/mm²	10	20	319	509	0,156
Cast metals
Cast iron	≤ 350 HB	22	31	891	1,019	0,313
Spheroidal graphite and malleable iron	≤ 350 HB	22	31	700	796	0,313
Non-ferrous metal
Aluminium	≤ 600 N/mm²	40	60	1,019	1,528	0,250
Plastics
Plastics, thermosetting		20	37	636	955	0,250
Plastics, thermoplastic		20	37	636	955	0,250
Wood
Softwood		25	37	796	955	0,250
Hardwood
Hardwood		22	31	700	796	0,200

Legend
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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