1/4″ Gold Finish HSS Double-Ended Fractional Drill Bit

Product Name Double Ended HSS Drill Bit
Material HSS (HSS Cobalt is Available)
Process Fully Ground (Rolled & Polished, Rolled, Milled are Available)
Standard Double Ended (DIN338, Stub DIN1897, Long DIN340, Extra Long DIN1869, DIN345 Taper Shank, Blacksmith Reduced Shank 10mm, 13mm are Available)
(Jobber Length, Stub Screw Machine Length, Long Taper Length, Airctraft Extensoin,

Extra Long 12″, 18″, 24″, Silver & Deming 1/2″ Reduced Shank are Available)

Size 3-5.2mm, 7/64″-1/4″, 10#, 20#, 30#
Point Type 135 Degree Split Point (118 Degree Regular Point, Turbo Max Point, Pilot Point are Available)
Shank Type Straight Shank (Hex Shank, Tri-Flats Shank, Double R Hex Shank, Reduced Shank, Threaded Hex Shank,Taper Shank are Available)
Helix Angle Regular Spiral Type N (Slow Spiral Type H, Fast Spiral Type W, Left Hand Spiral are Available)
Web & Flute Type Regular Web & Flute (Thick Web with Parabolic Flute, Heavy Duty Web with Regular Flute are Available)
Surface Finish Bright (Black Oxide, Amber Color, Titanium, Black & Gold, Black & Bright are Available)
Package 10/5 Pcs in PVC Pouch, Plastic Box, Individually in Skin Card, Double Blister, Clamshell.

OEM ODM

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1/4″ Gold Finish HSS Double-Ended Fractional Drill Bit, HSS-G Double-Ended Metal Drill Bit, Fully Ground HSS Titanium Coated Double Ended Twist Drill Bit, HSS SAE Straight Shank Stubby Double-End Drill Bits, Drill Bit Double Ended Straight Shank Hand Tool for Body Panel/Car Repairs, Double Ended Shank, Double End Drill Bit Hss Straight Shank Twist Bits for Metal Drilling Holemaking, 4341 cobalt hss double ended drill bits, Woodworking Metalworking & Multipurpose Drill Bits China Supplier Factory

1/4″ Gold Finish HSS Double-Ended Fractional Drill Bit Technical Specifications
Drill Size
1/4″
Drill Point Angle
135°
Material
High Speed Steel
Finish / Coating
Gold
Overall Length
2-5/8″
Flute Length
13/16″
Drill Style
Fractional
Type
Double-Ended Drill
Diameter
0.2500″
Product Weight
0.029
UOM
each
Notes
Type 140
Made of HSS
135[DEG] split point self-centers and does not walk
Black oxide finish increases lubricity
This twin end drill has wide applications in drilling any thin sheet metal or wood
Automotive body shops will find twin end drills especially productive
Type 140-AG
Made of special Hi-Molybdenum Tool Steel
Gold surface treated for maximum lubricity
135[DEG] split point self-centers and does not walk
Extra rugged uncleared construction gives superior performance and less breakage

Product Name Double Ended HSS Drill Bit
Material HSS (HSS Cobalt is Available) 135° Split Point Black Oxide High Speed Steel Double-Ended Drill Bit
Process Fully Ground (Rolled & Polished, Rolled, Milled are Available)
Standard Double Ended (DIN338, Stub DIN1897, Long DIN340, Extra Long DIN1869, DIN345 Taper Shank, Blacksmith Reduced Shank 10mm, 13mm are Available) (Jobber Length, Stub Screw Machine Length, Long Taper Length, Airctraft Extensoin, Extra Long 12″, 18″, 24″, Silver & Deming 1/2″ Reduced Shank are Available)
Size 3-5.2mm, 7/64″-1/4″, 10#, 20#, 30#
Point Type 135 Degree Split Point (118 Degree Regular Point, Turbo Max Point, Pilot Point are Available)  HSS Double-Ended Drill Bit Ground For Rotary Drills / Drivers
Shank Type Straight Shank (Hex Shank, Tri-Flats Shank, Double R Hex Shank, Reduced Shank, Threaded Hex Shank,Taper Shank are Available)
Helix Angle Regular Spiral Type N (Slow Spiral Type H, Fast Spiral Type W, Left Hand Spiral are Available)
Web & Flute Type Regular Web & Flute (Thick Web with Parabolic Flute, Heavy Duty Web with Regular Flute are Available)
Surface Finish Bright (Black Oxide, Amber Color, Titanium, Black & Gold, Black & Bright are Available)
Package 10/5 Pcs in PVC Pouch, Plastic Box, Individually in Skin Card, Double Blister, Clamshell. 10PCS HSS Double Ended Twist Drill Bit Set
Made of M2 high speed steel for the best combination of strength, heat resistance, and wear resistance; Cobalt material also available Black Oxide Straight Shank Double Ended HSS Drill Bits
For general use in wood, metal, and plastic
Fully Ground Quality for maximum accuracy and fast chip removal
Precision ground cutting edges for fast drilling and perfect finish

You can find double-ended drill bits in different materials, some of which include:
Carbon steel
Stainless steel
High-speed steel (HSS)
Composites
Benefits of Double-Ended Drill Bits  HSS-G Double-Ended Metal Drill Bit
Double-ended drill bits offer several benefits, one of which is convenience. They are fast and easy to use. You don’t have to worry about accidentally installing them backward. With your drill’s chuck open — the chuck is the clamping device that holds the drill bit — you can place the double-ended drill bit in your drill. Closing the chuck will then secure the double-ended drill bit in place.  M2 HSS Double Ended Twist Drill Bit

Double Ended(Metric Size)

Diameter

Flute Length

Overall Length

Diameter

Flute Length

Overall Length

Diameter

Flute Length

Overall Length

Diameter

Flute Length

Overall Length

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

3.0

10

46

4.1

13

55

5.2

16

62

8.0

25

79

3.1

10

46

4.2

13

55

5.5

19

66

8.5

25

79

3.2

10

49

4.5

16

58

6.0

19

66

9.0

25

84

3.3

10

49

4.8

16

58

6.5

21

70

9.5

25

84

3.5

13

52

5.0

16

62

7.0

23

74

10.0

25

89

4.0

13

55

5.1

16

62

7.5

23

74

Double Ended(Inch Size)

Diameter

Flute Length

Overall Length

Diameter

Flute Length

Overall Length

Diameter

Flute Length

Overall Length

Diameter

Flute Length

Overall Length

inch

inch

inch

inch

inch

inch

inch

inch

inch

inch

inch

inch

3/32″

9/16″

1-3/4″

9/64″

5/8″

2″

7/32″

11/16″

2-3/8″

11#

11/16″

2-1/4″

7/64″

5/8″

1-7/8″

5/32″

5/8″

2-1/16″

1/4″

7/8″

2-1/2″

20#

5/8″

2-1/8″

1/8″

5/8″

2″

3/16″

5/8″

2-13/16″

10#

11/16″

2-1/4”

30#

5/8″

2″