HSS Combined Drills & Countersinks

• Customized: Customized
• Standard: DIN, JIS, AISI
• Length: Jobber-length
• Type: Center Drill Bit
• Material: High Speed Steel
• Usage: Metal Drilling
• Model NO.: metric and inch
• Size: No 0 to No10
• Transport Package: Plastic Box
• Specification: NO 0 to No 10
• Trademark: stc
• Origin: Jiangsu
• HS Code: 82075090
• Production Capacity: 100000PCS Per Month

Product Description

We only use super high speed steel to make this drill bits.

kinds of coating available. tin, tialn .

specical design available on request.

taper shank available on request.

regular length and long length available.

 

STC036-1, INCH SIZE COMBINED DRILLS & COUNTERSINKS  ( CENTER DRILL )
ANSI / ASME B94.11 M-1993
PLAIN TYPE, 60° Angle, Ground
		Size	Body Diameter	Drill Diameter	Overall Length
Pict
		0	1/8"	1/32"	1-1/8"
		1	1/8"	3/64"	1-1/4"
		2	3/16"	5/64"	1-7/8"
		3	1/4"	7/64"	2"
		4	5/16"	1/8"	2-1/8"
		4-1/2	3/8"	9/64"	2-1/2"
		5	7/16"	3/16"	2-3/4"
		6	1/2"	7/32"	3"
		7	5/8"	1/4"	3-1/4"
		8	3/4"	5/16"	3-1/2"
		9	7/8"	11/32"	3-5/8"
		10	1"	3/8"	3-3/4"
BELL TYPE, 60° / 120° Angle, Milled / Ground
Pict		Size	Body Diameter	Drill Diameter	Overall Length
		11	1/8"	3/64"	1-1/4"
		12	3/16"	1/16"	1-7/8"
		13	1/4"	3/32"	2"
		14	5/16"	7/64"	2-1/8"
		15	7/16"	5/32"	2-3/4"
		16	1/2"	3/16"	3"
		17	5/8"	7/32"	3-1/4"
		18	3/4"	1/4"	3-1/2"
		19	7/8"	5/16"	3-5/8"
		20	1"	3/8"	3-3/4"
STC037, INCH SIZE COMBINED DRILLS & COUNTERSINKS, Long Series
PLAIN TYPE.		Size	Body Diameter	Drill Diameter	Overall Length
60° Angle
		1A	1/8"	3/64"	3"
		1B	1/8"	3/64"	4"
Pict		1C	1/8"	3/64"	5"
		1D	1/8"	3/64"	6"
		2A	3/16"	5/64"	3"
		2B	3/16"	5/64"	4"
		2C	3/16"	5/64"	5"
		2D	3/16"	5/64"	6"
		3A	1/4"	7/64"	3"
		3B	1/4"	7/64"	4"
		3C	1/4"	7/64"	5"
		3D	1/4"	7/64"	6"
		4A	5/16"	1/8"	3"
		4B	5/16"	1/8"	4"
		4C	5/16"	1/8"	5"
		4D	5/16"	1/8"	6"
		5B	7/16"	3/16"	4"
		5C	7/16"	3/16"	5"
		5D	7/16"	3/16"	6"
		6B	1/2"	7/32"	4"
		6C	1/2"	7/32"	5"
		6D	1/2"	7/32"	6"
		7	5/8"	1/4"	6"
		8	3/4"	5/16"	6"