Cobalt Drill Bits for Metal

HSS Cobalt Drill Bit for Metal

The best cobalt drill bits can use for a long lifetime
Universal round drill shank can use with a wide variety of tool holding systems
Sharp and durable
135 degree split-point drills on contact and prevents walking

Product Details
Factory
Material

Product Description
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Product Name	High-Speed-Steel Types of Best Drill Bits for Metal Fully Ground
Material	HSS Cobalt ( M35 HSS-E HSS-Co5% )
Process	Fully Ground (Also have Rolled & Polshed, Rolled, Milled)
Standard	DIN338 (Also have Stub DIN1897, Long DIN340, Extra Long DIN1869, Blacksmith Reduced Shank 10mm, 13mm, DIN345 Taper Shank are Available) Jobber Length (Also have Stub Screw Machine Length, Long Taper Length, Aircraft Extension, Extra Long 12″, 18″, 24″, Silver & Deming 1/2″ Reduced Shank)
Size	1/16″ – 1″ (0.5mm-25mm)
Point Type	135 Degree Split Point (Also have 118 Degree Regular Point, Turbo Max Point, Pilot Point)
Shank Type	Straight Shank (Also have Tri-Flats Shank, Hex Shank, Double R Hex Shank, Reduced Shank, Threaded Hex Shank, Taper Shank )
Helix Angle	Regular Spiral Type N (Also have Slow Spiral Type H, Fast Spiral Type W, Left Hand Spiral)
Web & Flute Type	Regular Web & Flute (Also have Thick Web with Parabolic Flute, Heavy Duty Web with Regular Flute)
Surface Finish	Amber Color (Also have Bright, Black Oxide, Black & Gold, Titanium, Black & Bright)
Package	10/5 Pcs in PVC Pouch, Plastic Box, Individually in Skin Card, Double Blister, Clamshell
Features	1. Cobalt drill bits are more expensive than other drill bits, but drilling in stainless steel, long life, best choose 2.No need center punch, 135 ° split-point drills on contact and prevents walking 3. Precision ground point, flutes, body, clearance, and drill diameter for the ultimate in accuracy and performance 4. Ground flutes provide fast chip to remove maximize, efficiency along the full working surface of the bit

Product Size
DIN338
Diameter(mm)	Flute Length(mm)	Overall Length(mm)	Diameter(mm)	Flute Length(mm)	Overall Length(mm)
0.5	6	22	9.5	81	125
1.0	12	34	10.0	87	133
1.5	20	43	10.5	87	133
2.0	24	49	11.0	94	142
2.5	30	57	11.5	94	142
3.0	33	61	12.0	101	151
3.2	36	65	12.5	101	151
3.5	39	70	13.0	101	151
4.0	43	75	13.5	108	160
4.2	43	75	14.0	108	160
4.5	47	80	14.5	114	169
4.8	52	86	15.0	114	169
5.0	52	86	15.5	120	178
5.2	52	86	16.0	120	178
5.5	57	93	16.5	125	184
6.0	57	93	17.0	125	184
6.5	63	101	17.5	130	191
7.0	69	109	18.0	130	191
7.5	69	109	18.5	135	198
8.0	75	117	19.0	135	198
8.5	75	117	19.5	140	205
9.0	81	125	20.0	140	205
Jobber Length Fraction
Diameter (Inch)	Flute Length(Inch)	Overall Length(mm)	Diameter (Inch)	Flute Length(Inch)	Overall Length(mm)
3/64″	3/4″	1-3/4″	25/64″	3-3/4″	5-1/8″
1/16″	7/8″	1-7/8″	13/32″	3-7/8″	5-1/4″
5/64″	1″	2″	27/64″	3-15/16″	5-3/8″
3/32″	1-1/8″	2-1/4″	7/16″	4-1/16″	5-1/2″
7/64″	1-1/2″	2-5/8″	29/64″	4-3/16″	5-5/8″
1/8″	1-5/8″	2-3/4″	15/32″	4-5/16″	5-3/4″
9/64″	1-3/4″	2-7/8″	31/64″	4-3/8″	5-7/8″
5/32″	2″	3-1/8″	1/2″	4-1/2″	6″
11/64″	2-1/8″	3-1/4″	33/64″	4-13/16″	6-5/8″
3/16″	2-5/16″	3-1/2″	17/32″	4-13/16″	6-5/8″
13/64″	2-7/16″	3-5/8″	35/64″	4-13/16″	6-5/8″
7/32″	2-1/2″	3-3/4″	9/16″	4-13/16″	6-5/8″
15/64″	2-5/8″	3-7/8″	37/64″	4-13/16″	6-5/8″
1/4″	2-3/4″	4″	19/32″	5-3/16″	7-1/8″
17/64″	2-7/8″	4-1/8″	39/64″	5-3/16″	7-1/8″
9/32″	2-15/16″	4-1/4″	5/8″	5-3/16″	7-1/8″
19/64″	3-1/16″	4-3/8″	41/64″	5-3/16″	7-1/8″
5/16″	3-3/16″	4-1/2″	21/32″	5-3/16″	7-1/8″
21/64″	3-5/16″	4-5/8″	43/64″	5-5/8″	7-5/8″
11/32″	3-7/16″	4-3/4″	11/16″	5-5/8″	7-5/8″
23/64″	3-1/2″	4-7/8″
3/8″	3-5/8″	5″
Jobber Length Number
Diameter	Flute Length(Inch)	Overall Length(mm)	Diameter	Flute Length(Inch)	Overall Length(mm)
1#	2-5/8″	3-7/8″	31″	1-5/8″	2-3/4″
2#	2-5/8″	3-7/8″	32″	1-5/8″	2-3/4″
3#	2-1/2″	3-3/4″	33″	1-1/2″	2-5/8″
4#	2-1/2″	3-3/4″	34″	1-1/2″	2-5/8″
5#	2-1/2″	3-3/4″	35″	1-1/2″	2-5/8″
6#	2-1/2″	3-3/4″	36″	1-7/16″	2-1/2″
7#	2-7/16″	3-5/8″	37″	1-7/16″	2-1/2″
8#	2-7/16″	3-5/8″	38″	1-7/16″	2-1/2″
9#	2-7/16″	3-5/8″	39″	1-3/8″	2-3/8″
10#	2-7/16″	3-5/8″	40″	1-3/8″	2-3/8″
11#	2-5/16″	3-1/2″	41″	1-3/8″	2-3/8″
12#	2-5/16″	3-1/2″	42″	1-1/4″	2-1/4″
13#	2-5/16″	3-1/2″	43″	1-1/4″	2-1/4″
14#	2-3/16″	3-3/8″	44″	1-1/8″	2-1/8″
15#	2-3/16″	3-3/8″	45″	1-1/8″	2-1/8″
16#	2-3/16″	3-3/8″	46″	1-1/8″	2-1/8″
17#	2-3/16″	3-3/8″	47″	1″	2″
18#	2-1/8″	3-1/4″	48″	1″	2″
19#	2-1/8″	3-1/4″	49″	1″	2″
20#	2-1/8″	3-1/4″	50″	1″	2″
21#	2-1/8″	3-1/4″	51″	1″	2″
22#	2″	3-1/8″	52″	7/8″	1-7/8″
23#	2″	3-1/8″	53″	7/8″	1-7/8″
24#	2″	3-1/8″	54″	7/8″	1-7/8″
25#	1-7/8″	3″	55″	7/8″	1-7/8″
26#	1-7/8″	3″	56″	3/4″	1-3/4″
27#	1-7/8″	3″	57″	3/4″	1-3/4″
28#	1-3/4″	2-7/8″	58″	11/16″	1-5/8″
29#	1-3/4″	2-7/8″	59″	11/16″	1-5/8″
30#	1-5/8″	2-3/4″	60″	11/16″	1-5/8″
Jobber Length Letter
Diameter	Flute Length(Inch)	Overall Length(mm)	Diameter (Inch)	Flute Length(Inch)	Overall Length(mm)
A	2-5/8″	3-7/8″	N	3-1/16″	4-3/8″
B	2-3/4″	4″	O	4-1/2″	4-1/2″
C	2-3/4″	4″	P	4-5/8″	4-5/8″
D	2-3/4″	4″	Q	4-3/4″	4-3/4″
E	2-3/4″	4″	R	4-3/4″	4-3/4″
F	2-7/8″	4-1/8″	S	4-7/8″	4-7/8″
G	2-7/8″	4-1/8″	T	4-7/8″	4-7/8″
H	2-7/8″	4-1/8″	U	5″	5″
I	2-7/8″	4-1/8″	V	3-5/8″	5″
J	2-7/8″	4-1/8″	W	3-3/4″	5-1/8″
K	2-15/16″	4-1/4″	X	3-3/4″	5-1/8″
L	2-15/16″	4-1/4″	Y	3-7/8″	5-1/4″
M	3-1/16″	4-3/8″	Z	3-7/8″	5-1/4″
* Custom-tailor would be available against customers’ requirements

Factory

HSS cobalt drill bits are more expensive than other drill bits, but it can drilling for a long lifetime, 135 point can easily drill on the metal prevent walking. High regrind, high hardness, high sharpness!

Best Cobalt Drill Bits can drill into stainless steel, iron, aluminum and other hard materials.

135 degree split point no need center punch tool, the ultimate in accuracy and performance.

High Speed Steel (HSS) Cobalt

We will tell you about why cobalt drill bit is the best for stainless steel, please click here!