Nc Spotting Twist Drill Bits

• Customization: Available
• Customized: Non-Customized
• Standard: DIN, JIS, AISI
• Model NO.: standard
• Length: Jobber-length
• Type: Twist Drill Bit
• Material: High Speed Steel
• Usage: Metal Drilling
• Size: 3mm to 20mm
• Transport Package: on request
• Specification: 3-30MM
• Trademark: stc
• Origin: Jiangsu
• HS Code: 82075090
• Production Capacity: 5000PCS/Month

Product Description

SPOTTING AND CENTERING:

Nc spotting dril bits are designed for centering operations. Nc spotting dril bits feature short overall and flute lengths, this provides increased rigidity, which reduces run out. Available in both Left and Right hand.

High speed steel NC Spotting and center Drill
TWO RH SPIRAL FLUTES - 120° DRILL POINT
(Also available with 90° Drill point)
Centering and chamfering can be accomplished in a single operation left hand on request

Nominal diameter Dh8 inch	Flute Length L2 inch	Overall length L1 inch
1/8"	5/8"	2-1/2"
3/16"	3/4"	2-1/2"
1/4"	1"	2-1/2"
3/8"	1-1/4"	3"
1/2"	1-1/4"	3"
5/8"	1-1/8"	3"
3/4"	1-1/8"	3"
1"	1-1/8"	3"

 

Nominal diameter Dh8 mm	Flute Length L2 mm	Overall length L1 mm
3	8	46
4	9	55
5	10	62
6	15	66
8	17	79
10	20	89
12	25	102
16	35	115
20	40	131
25	50	151
30	50	160