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Measurement

EDT

Drill tap, HSS-Co.

Drill tap, material high speed steel with 5% cobalt.

thread pitch (millimeter)

thread size (millimeter)

Order

EDT

Order code EDT.08

EAN code 8718858038466

Order

EDT.08

Order code EDT.10

EAN code 8718858038473

Order

EDT.10

Order code EDT.12

EAN code 8718858038480

Order

EDT.12

Order code EDT.14

EAN code 8718858038497

Order

EDT.14

Order code EDT.16

EAN code 8718858038503

Order

EDT.16

Order code EDT.18

EAN code 8718858038510

Order

EDT.18

Order code EDT.20

EAN code 8718858038527

Order

EDT.20

Order code EDT.22

EAN code 8718858038534

Order

EDT.22

Order code EDT.24

EAN code 8718858038541

Order

EDT.24

Order code EDT.27

EAN code 8718858038558

Order

EDT.27

Order code EDT.30

EAN code 8718858038565

Order

EDT.30

Suitable and directly fitting (19,05 mm Weldon connection) to Euroboor magnetic drilling machines:
ECO.50+/T
ECO.55S/T
ECO.55S+/T
ECO.100S+/T
ECO.100S+/TD
TUBE.55S/T

Properties
Product info
Variations

Properties

Dimensions
thread pitch (millimeter)	See table
thread size (millimeter)	See table
cutting depth (millimeter)	See table
Properties
colour	black
material	high speed steel with 5% cobalt
outside finish	oxide coating
system of measurement	mm (metric)
application	threading

HSS Cobalt Machine Taps –
Metric Thread Taps for Metal

Tapping is the process of cutting internal threads in a predrilled hole, allowing bolts or other fasteners to be securely fitted. Choosing the right machine tap and pairing it with the correct tap drill size is essential for producing accurate, clean threads and extending tool life.

Manufactured from High Speed Steel with added cobalt, our taps offer outstanding heat resistance and wear durability, making them ideal for professional metalworking. These metric HSS Cobalt machine taps are designed to cut continuous threads in construction steel, aluminium, zinc, lead, copper, brass, cast iron, and stainless steel. All our taps, for both blind holes and through holes, are suitable for use in magnetic drilling machines that support right/left (R/L) rotation.

Tapping Chucks with Automatic Reverse

If your machine does not support right / left rotation, these taps can be used with our GSW series tapping chucks. These chucks automatically switch to counter-rotation for easy tap retraction, even without R/L functionality.

Through Holes – HSS Cobalt Machine Taps

Through holes are drilled completely through the workpiece, allowing chips to exit from the opposite side. Our HSS Cobalt machine taps for through holes feature straight flutes that push chips forward and out of the hole during tapping, ensuring smooth, precise results.

Blind Holes – HSS Cobalt Machine Taps

Blind holes are drilled to a specific depth without breaking through the opposite side of the workpiece. Our HSS Cobalt machine taps for blind holes feature precision-ground spiral flutes that pull chips up and out of the hole, preventing clogging and reducing the risk of tap damage.

DIN Standards – 371 vs 376

Machine taps are manufactured according to DIN standards, which define shank design and dimensions:

DIN 371: Reinforced shank for extra strength, used for sizes M3 to M10.
DIN 376: Reduced shank diameter for deeper holes, used for sizes M12 to M24.

Note: M10 is available in both DIN 371 and DIN 376 depending on application and shank type.

Available sizes and recommended predrilled hole sizes

DIN 371 Taps

Size (Thread × Pitch) (mm)	Advised Predrilled Hole (mm)
M3 × 0.50	2.5
M4 × 0.70	3.3
M5 × 0.80	4.2
M6 × 1.00	5.0
M8 × 1.25	6.8
M10 × 1.50	8.5

DIN 376 Taps

Size (Thread × Pitch) (mm)	Advised Predrilled Hole (mm)
M10 × 1.50	8.5
M12 × 1.75	10.2
M14 × 2.00	12.0
M16 × 2.00	14.0
M18 × 2.50	15.5
M20 × 2.50	17.5

Din 376 Taps continued

Size (Thread × Pitch) (mm)	Advised Predrilled Hole (mm)
M22 × 2.50	19.5
M24 × 3.00	21.0
M27 × 3.00	24.0
M30 × 3.50	26.5

Would you like to see the whole tapping assortment of the Euroboor, click the button below to see the overview!

View the tapping page

Variations

No.	thread pitch (millimeter)	thread size (millimeter)	cutting depth (millimeter)	Quantity
No.				Quantity
52320801120004 EDT.08	thread pitch (Tp / mm): 1.25	thread size (Ts / mm): 8	depth of cut (DoC / mm): 17	Drill tap, D 8 mm, HSS-Co.
52321001150004 EDT.10	thread pitch (Tp / mm): 1.5	thread size (Ts / mm): 10	depth of cut (DoC / mm): 20	Drill tap, D 10 mm, HSS-Co.
52321201170004 EDT.12	thread pitch (Tp / mm): 1.75	thread size (Ts / mm): 12	depth of cut (DoC / mm): 20	Drill tap, D 12 mm, HSS-Co.
52321401200004 EDT.14	thread pitch (Tp / mm): 2	thread size (Ts / mm): 14	depth of cut (DoC / mm): 18	Drill tap, D 14 mm, HSS-Co.
52321601200004 EDT.16	thread pitch (Tp / mm): 2	thread size (Ts / mm): 16	depth of cut (DoC / mm): 18	Drill tap, D 16 mm, HSS-Co.
52321801150004 EDT.18	thread pitch (Tp / mm): 1.5	thread size (Ts / mm): 18	depth of cut (DoC / mm): 20	Drill tap, D 18 mm, HSS-Co.
52322001250004 EDT.20	thread pitch (Tp / mm): 2.5	thread size (Ts / mm): 20	depth of cut (DoC / mm): 25	Drill tap, D 20 mm, HSS-Co.
52322201250004 EDT.22	thread pitch (Tp / mm): 2.5	thread size (Ts / mm): 22	depth of cut (DoC / mm): 24	Drill tap, D 22 mm, HSS-Co.
52322401300004 EDT.24	thread pitch (Tp / mm): 3	thread size (Ts / mm): 24	depth of cut (DoC / mm): 26	Drill tap, D 24 mm, HSS-Co.
52322701300004 EDT.27	thread pitch (Tp / mm): 3	thread size (Ts / mm): 27	depth of cut (DoC / mm): 29	Drill tap, D 27 mm, HSS-Co.
52323001350004 EDT.30	thread pitch (Tp / mm): 3.5	thread size (Ts / mm): 30	depth of cut (DoC / mm): 31	Drill tap, D 30 mm, HSS-Co.