Best Cobalt Drill Bit Set

10Pcs M35 Cobalt HSS Jobber Length Twist Drill Bit with Straight Shank Set for Hard Materials

Made from cobalt Hss M35, this drill bit is designed for increased wear and heat resistance.
Last longer and perform better than other drill bits on the market.
Our cobalt drill bit undergoes fully grinding processing.
And with its 135° split point design, it’s easy to use and provides rapid self-centering.
Look no further than our own cobalt drill bit!

Product Details
Factory
Material

Product Description
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Product Name	10Pcs M35 Cobalt HSS Jobber Length Twist Drill Bit with Straight Shank Set for Hard Materials
Size	1-13mm
Material	M35 (Co5%), M42 (Co8%)
Flute Type	Single Flute
Shank	Round Shank (We also Have Reduced Shank, Taper Shank, Hex Shank)
Surface Finish	Amber (We also have Black Oxide)
Package	10 or 5pcs in One Plastic Box

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

Hss twist drill bits, black and gold surface provide a protection to prevent rusty. Drilling accurate without a center punch tool, it can drill in general metal drilling. 135 degree split point eliminate drill walking on work-pieces. High quality guarantee hss twist drill bits!

Material: M2 HSS 6542
Surface: Black & Gold
Use: Metal Drilling

Hss twist drill bits for drilling on copper, stainless steel, iron and other materials.

Hss twist Drill Bits use long life, Factory price.