Page 8 - Centerdrill Produktkatalog 2020 English

Centerdrill - Maximum wall thickness

Information in mm

Length
Max. wall thickness of working part
Centerdrill
Thread / core hole L1 L1 Shank-
Pitch Ø short long short-flat long-flat short long diameter

Metric thread - DIN ISO 13
M3 x 0,5 2,7 1,3 2,2 1,7 2,7 6,7 8,0 6,0

M4 x 0,7 3,7 1,3 2,3 1,7 2,7 7,0 9,0 6,0

M5 x 0,8 4,5 1,3 2,4 1,7 2,8 9,0 11,4 6,0

M6 x 1 5,4 1,3 2,7 1,7 3,0 10,5 13,8 8,0

M8 x 1,25 7,3* 1,5 3,5 2,0 4,5 14,0 18,2 8,0

M10 x 1,5 9,2* 2,0 4,3 2,5 5,2 16,9 22,5 10,0

M12 x 1,75 10,9* 2,4 4,9 2,8 5,9 20,0 26,6 12,0

M14 x 2 13,0 2,4 5,3 3,0 7,0 23,5 31,3 14,0

M16 x 2 14,8 3,0 6,4 3,5 7,5 27,0 35,4 16,0

Withworth pipe thread - DIN EN ISO 228

G1/8'' x 28 9,2* 2,0 4,3 2,5 5,2 16,9 22,5 10,0

G1/4'' x 19 12,4 2,3 5,5 3,0 6,5 22,8 30,0 14,0

G3/8'' x 19 15,9 3,3 6,9 3,5 8,0 30,3 37,5 16,0

G1/2'' x 14 19,9 4,0 8,5 4,5 9,0 36,6 47,0 18,0

G3/4'' x 14 25,4 4,5 10,6 5,0 11,0 46,6 59,6 20,0

Please note:
*Processing of stainless steel: Centerdrill core hole diameter +0.1 mm from M8 to M12, as well as G1/8”.
Example for M8: instead of 7.3mm we recommend a core hole of 7.4mm for the Centerdrill tool.

Customized Centerdrills:
Longer Centerdrills for thicker materials or shorter Centerdrills for low profiles are available on
request. Also, Centerdrills for other thread types (such as MF, UNC, UNF, etc.) can be customized for
your specific application.

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