GSR metal-twist-drill tap-hole-drill DIN 338 HSSG fully-ground 03445

twist drill DIN 338 HSS-G 7,8 mm

1,87€

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Delivery time (DE): 2-3 business days

Art.-Nr.: 03445078
EAN: 4014176088911

twist drill DIN 338 HSS-G 7,8 mm

Din 338 HSS-G

Technical Specification:
Direction: right
Processed material: Steel

twist drill
short version
relieved cone
polished

Size: 7,8
Total length: 117
Working length: 75

Drilling is a separation process to create round holes into a
material through chip removal. A distinction is made between
blind hole drillings and through hole drillings. A core hole must
be bored to cut a thread into the hole. Core holes have specific
sizes which correspond to the taps. You can find these sizes in
each tap table as it’s absolutely necessary to stick to it.

Twist drills have a side rake angle (also called twist angle) of 27°, a
point angle of 118° or 135° and a cylindrical shank. The finish “Type
N” is suitable for normal cutting materials. A distinction is made
between roll forged and fully ground twist drills.

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twist drill DIN 338 HSS-G 7,8 mm

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