Heller HSS-Co Cobalt Twist Drills DIN 338 RN

Heller Brand: Heller

These HSS-Co cobalt twist drills from Heller are equipped to tackle the toughest drilling jobs in stainless steel and metal. They are made from a special HSS steel with a 5% cobalt content and are available in a range of diameters ranging from 1mm to 16mm.

  • Suitable for metal, non-ferrous metal, stainless steel
  • Split point and 135° point angle for optimum, extremely accurate starting
  • Precision tool compliant with DIN 338 RN for outstanding accuracy
  • Length 133mm
  • Weight 331.9g
Description Image Product Buy Pricing (Ex VAT) Type Diameter Number of Bits Cutting Length Smallest Diameter Overall Length Weight
Heller 17735 1 0990 HSS-Co Cobalt Twist Drills DIN 338 RN Set 2/3/4/5/6/8mm
Heller 17735 1 0990 HSS-Co Cobalt Twist Drills DIN 338 RN Set 2/3/4/5/6/8mm
Standard range
Order code: 58-3292
MPN: 17735 D

Despatched within 4 working days - 39 in stock
1+ £24.00
Price per unit Ex VAT 		Metal twist drill bit set 8mm 6 2mm
Heller 21221 2 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 1.0mm - Single
Heller 21221 2 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 1.0mm - Single
Standard range
Order code: 58-4640
MPN: 21221 2

Despatched within 4 working days - 21 in stock
2+ £3.53
Price per unit Ex VAT 		Metal twist drill bit 1mm 12mm 34mm
Heller 21222 9 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 1.5mm - Single
Heller 21222 9 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 1.5mm - Single
Standard range
Order code: 58-4645
MPN: 21222 9

Despatched within 4 working days - 21 in stock
2+ £3.30
Price per unit Ex VAT 		Metal twist drill bit 1.5mm 18mm 40mm
Heller 21223 6 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 2.0mm - Single
Heller 21223 6 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 2.0mm - Single
Standard range
Order code: 58-4763
MPN: 21223 6

Despatched within 4 working days - 43 in stock
2+ £2.75
Price per unit Ex VAT 		Metal twist drill bit 2mm 24mm 49mm
Heller 21224 3 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 2.5mm - Single
Heller 21224 3 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 2.5mm - Single
Standard range
Order code: 58-4656
MPN: 21224 3

Despatched within 4 working days - 28 in stock
2+ £3.41
Price per unit Ex VAT 		Metal twist drill bit 2.3mm 27mm 53mm
Heller 21225 0 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 3.0mm - Single
Heller 21225 0 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 3.0mm - Single
Standard range
Order code: 58-4662
MPN: 21225 0

Despatched same day - 4 in stockBack-order availability date - 31/07/2026
1+ £4.19
Price per unit Ex VAT 		Metal twist drill bit 3mm 33mm 61mm
Heller 21226 7 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 3.2mm - Single
Heller 21226 7 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 3.2mm - Single
Standard range
Order code: 58-4665
MPN: 21226 7

Despatched within 4 working days - 17 in stock
2+ £3.45
Price per unit Ex VAT 		Metal twist drill bit 3.2mm 36mm 65mm
Heller 21227 4 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 3.3mm - Single
Heller 21227 4 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 3.3mm - Single
Extended range
Order code: 58-4667
MPN: 21227 4

Available to back orderBack order, lead time 10 days
2+ £3.40
Price per unit Ex VAT 		Metal twist drill bit 3.3mm 36mm 65mm
Heller 21228 1 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 3.5mm - Single
Heller 21228 1 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 3.5mm - Single
Standard range
Order code: 58-4764
MPN: 21228 1

Despatched within 4 working days - 23 in stock
1+ £5.60
Price per unit Ex VAT 		Metal twist drill bit 3.5mm 39mm 70mm
Heller 21229 8 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 4.0mm - Single
Heller 21229 8 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 4.0mm - Single
Standard range
Order code: 58-4675
MPN: 21229 8

Despatched within 4 working days - 62 in stock
1+ £3.99
Price per unit Ex VAT 		Metal twist drill bit 4mm 43mm 75mm
Heller 21230 4 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 4.2mm - Single
Heller 21230 4 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 4.2mm - Single
Standard range
Order code: 58-4678
MPN: 21230 4

Despatched within 4 working days - 27 in stock
1+ £4.00
Price per unit Ex VAT 		Metal twist drill bit 4.2mm 43mm 75mm
Heller 21231 1 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 4.5mm - Single
Heller 21231 1 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 4.5mm - Single
Standard range
Order code: 58-4682
MPN: 21231 1

Despatched within 4 working days - 10 in stock
1+ £5.10
Price per unit Ex VAT 		Metal twist drill bit 4.5mm 47mm 80mm
Heller 21232 8 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 4.8mm - Single
Heller 21232 8 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 4.8mm - Single
Extended range
Order code: 58-4686
MPN: 21232 8

Available to back orderBack order, lead time 10 days
1+ £4.31
Price per unit Ex VAT 		Metal twist drill bit 4.8mm 52mm 83mm
Heller 21233 5 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 5.0mm - Single
Heller 21233 5 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 5.0mm - Single
Standard range
Order code: 58-4689
MPN: 21233 5

Despatched within 4 working days - 25 in stock
1+ £4.70
Price per unit Ex VAT 		Metal twist drill bit 4.8mm 52mm 86mm
Heller 21234 2 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 5.5mm - Single
Heller 21234 2 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 5.5mm - Single
Standard range
Order code: 58-4694
MPN: 21234 2

Despatched within 4 working days - 10 in stock
1+ £5.95
Price per unit Ex VAT 		Metal twist drill bit 5.5mm 57mm 93mm
Heller 21235 9 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 6.0mm - Single
Heller 21235 9 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 6.0mm - Single
Standard range
Order code: 58-4700
MPN: 21235 9

Despatched within 4 working days - 20 in stock
1+ £5.87
Price per unit Ex VAT 		Metal twist drill bit 6mm 57mm 93mm
Heller 21236 6 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 6.5mm - Single
Heller 21236 6 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 6.5mm - Single
Standard range
Order code: 58-4706
MPN: 21236 6

Despatched within 4 working days - 7 in stock
1+ £7.35
Price per unit Ex VAT 		Metal twist drill bit 6.5mm 63mm 101mm
Heller 21237 3 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 7.0mm - Single
Heller 21237 3 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 7.0mm - Single
Extended range
Order code: 58-4712
MPN: 21237 3

Available to back orderBack order, lead time 10 days
1+ £7.85
Price per unit Ex VAT 		Metal twist drill bit 7mm 69mm 109mm
Heller 21238 0 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 7.5mm - Single
Heller 21238 0 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 7.5mm - Single
Standard range
Order code: 58-4717
MPN: 21238 0

Despatched within 4 working days - 1 in stock
1+ £7.80
Price per unit Ex VAT 		Metal twist drill bit 7.5mm 69mm 109mm 30.4g
Heller 21239 7 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 8.0mm - Single
Heller 21239 7 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 8.0mm - Single
Standard range
Order code: 58-4722
MPN: 21239 7

Despatched within 4 working days - 12 in stock
1+ £9.03
Price per unit Ex VAT 		Metal twist drill bit 8mm 75mm 117mm
Heller 21240 3 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 8.5mm - Single
Heller 21240 3 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 8.5mm - Single
Standard range
Order code: 58-4728
MPN: 21240 3

Despatched within 4 working days - 13 in stock
1+ £8.97
Price per unit Ex VAT 		Metal twist drill bit 8.5mm 75mm 117mm 41.6g
Heller 21243 4 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 10.0mm - Single
Heller 21243 4 0990 HSS-Co Cobalt Twist Drill DIN 338 RN 10.0mm - Single
Extended range
Order code: 58-4746
MPN: 21243 4

Available to back orderBack order, lead time 10 days
1+ £16.88
Price per unit Ex VAT 		Metal twist drill bit 10mm 87mm 133mm 63.6g
Heller 21261 8 0990 HSS-Co Cobalt Twist Drills DIN 338 RN 2.0mm - Pack Of 10
Heller 21261 8 0990 HSS-Co Cobalt Twist Drills DIN 338 RN 2.0mm - Pack Of 10
Standard range
Order code: 58-4651
MPN: 21261 8

Despatched within 4 working days - 4 in stock
1+ £27.00
Price per unit Ex VAT 		Metal twist drill bit 2mm 24mm 49mm

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