German HSS Drill Bits 1–20 mm

STD – Standard German Hss Drill
ريش بولاد هواء الماني

Brand: R. Egon Cordt (Germany)
German HSS drills
1–20 mm

Standard German HSS twist drills for metal, every half millimetre from 1 to 20 mm.

Applications

Drilling steel and metal
Aluminium, copper, brass and plastics

How to use it

Centre-punch the hole.
Use cutting oil on steel; lower the speed as the diameter increases.

Specifications

Brand	R. Egon Cordt, Germany
Type	HSS twist drill
Diameters	1–20 mm (0.5 mm steps)

On special order: other diameters and lengths. Ask us for lead time.

Safety

Wear eye protection, clamp the work piece and never touch a hot drill bit.

FAQ

Which speed?
Small drills fast, large drills slow: roughly 3000 rpm at 3 mm, 1000 rpm at 10 mm, 500 rpm at 20 mm in steel.

What do people call it in Lebanon?
Usually rishe boulad hawa (ريشة بولاد هوا).

أسئلة شائعة

قدّيش السرعة؟
الصغار سريع والكبار بطيء: تقريباً ٣٠٠٠ دورة عـ٣ ملم، ١٠٠٠ عـ١٠، و٥٠٠ عـ٢٠ بالحديد.

Also known as: hss drill, twist drill, metal drill, rishe boulad · ريشة بولاد، ريشة حديد، ريشة هوا

ريش بولاد هوا ألمانية للحديد من ١ لـ٢٠ ملم.

Where to buy in Lebanon: ROUSSE Contracting Co. SAL (formerly ROUSSE Trading Co.). Showroom: Fouad Chehab, Sin el Fil. Phone +961 1 496 734 · WhatsApp +961 71 111 351. Open Monday–Friday, 8:00–16:30.

Size	1 mm, 1.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 2 mm, 2.5 mm, 20 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm
Application	Metal