12mm Drill Bit

HSS 135 Degree Twist Drill Bits for Metal Drilling

  • HSS Drill Bits can provide long-lasting performance when drilling
  • Made of M2 HSS 6542, M2 can provide higher wear resistance for metal drilling
  • 135 degree split point can drilling directly without a center punch tool
  • Fast chip removal
Product Description
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Product Name
Round Shank Best Twist Drill Bit 135 Angle for Stainless Steel
Material
HSS Cobalt ( M35 HSS-E HSS-Co5% )
Process
Fully Ground (Also have Rolled & Polished, Rolled, Milled)
Standard
DIN338 (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
Black & Bright (Also have Bright, Black Oxide, Black & Gold, Titanium, Amber Color)
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 drill bits with black and bright surface, “fully ground” means the drill bits are very strong and precise. M2 drill bits is cheaper than M35. 135 degree split point can drill precise without center punch tool.

  • Material: M2 HSS 6542
  • Surface: Black & Bright
  • Use: Metal Drilling

The hss drill bits can drill on stainless steel, aluminum, bronze, casting iron.

M2 hss drill bits are sharpened easily for long use.

  • Black and Bright surface
  • M2 HSS 6542
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