Twist Drill Bits

Twist drill bits are a hand tool accessories used for drilling material like masonry, wood and sheet metal to create holes. Twist Drill bits are used in conjunction with a power drill and are readily available in various shapes and sizes depending on the material being drilled.


Types of Twist Drill Bits


Jobber drill bit


Long drill bit


Short drill bit


Stub drill bit


Morse Taper drill bit


Self-centring drill bit


What material can they cut?


They can cut through many forms of material, it’s a question of having the correct drill bit, however typical materials include;


Wood


Plastics


Aluminium


Brass


Cast iron


Mild steel


How do they work?


Insert the drill bit into a corded or cordless power drill at the chuck, tighten until it’s held in place then select the required torque setting. Hold the power drill with both hands securely, apply some pressure then start drilling,


How do you know which type of Twist Drill Bits to use?


It is important to have the correct drill bit when cutting holes. When making a considered purchase there a few things you need to consider; the material being cut, the material & coating of the drill plus the geometry.


Drill point angle


There are 2 general types; 118 ° that drill mild steel aluminum and other soft metals or 135 ° that drills hard steel and tough materials.


What are their strengths?


HSS drill bits are basic, inexpensive and easy to re-sharpen


HSS drill bits with Cobalt are an improvement on HSS, offer greater resistance to heat and wear but is also easy to re-sharpen


Carbide drill bits are the most expensive, usually, give the best heat resistance and last the longest.


When should I sharpen my drill?


As a rule, if your holes are in tolerance and wear & chipping are below 0.5 mm it’s typically ok to keep using your drill, anything after that you need to consider replacing or sharpening.


Popular Coating


Bright finish


Black oxide


Titanium Nitride (TiN)


Titanium Carbon-Nitride (TiCN)


Titanium Aluminum Nitride (TiAIN)


Safety


Proper eye protection must be worn at all times


Only use drills bits made for power tools


Keep hands away from drills bits during application


Applications Information


Twist drill bits are used in Industrial construction, servicing & maintenance applications.


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Description Price Diameter Type Material Overall Length
RS Stock No. 707-2784
Mfr. Part No.DT4905-QZ
BrandDeWALT
$8.72
Each
units
4.5mm - HSCo 80 mm
RS Stock No. 113-8615
Mfr. Part No.DT50000-QZ
BrandDeWALT
$18.88
Each
units
3mm Impact Titanium 65 mm
RS Stock No. 706-8684
Mfr. Part No.DT6515-QZ
BrandDeWALT
$8.46
Each
units
3mm Jobber Carbide Tipped 113 mm
RS Stock No. 113-8628
Mfr. Part No.DT50019-QZ
BrandDeWALT
$35.95
Each
units
13mm Impact Titanium 101.5 mm
RS Stock No. 424-4181
Mfr. Part No.DT5062-QZ
BrandDeWALT
$20.31
Each
units
13mm - HSS-R 151 mm
RS Stock No. 706-8693
Mfr. Part No.DT6516-QZ
BrandDeWALT
$3.94
Each
units
3.5mm Jobber Carbide Tipped 113 mm
RS Stock No. 113-8621
Mfr. Part No.DT50009-QZ
BrandDeWALT
$19.02
Each
units
6mm Impact Titanium 80 mm
RS Stock No. 113-8619
Mfr. Part No.DT50007-QZ
BrandDeWALT
$21.63
Each
units
5mm Impact Titanium 77.5 mm
RS Stock No. 113-8625
Mfr. Part No.DT50016-QZ
BrandDeWALT
$28.76
Each
units
10mm Impact Titanium 101.5 mm
RS Stock No. 707-2800
Mfr. Part No.DT4909-QZ
BrandDeWALT
$15.89
Each
units
6.5mm - HSCo 101 mm
RS Stock No. 424-4030
Mfr. Part No.DT5049-QZ
BrandDeWALT
$11.61
Each
units
6.5mm - HSS-R 101 mm
RS Stock No. 424-4046
Mfr. Part No.DT5050-QZ
BrandDeWALT
$8.62
Each
units
7mm - HSS-R 109 mm
RS Stock No. 113-8616
Mfr. Part No.DT50002-QZ
BrandDeWALT
$18.94
Each
units
3.5mm Impact Titanium 70 mm
RS Stock No. 424-3942
Mfr. Part No.DT5037-QZ
BrandDeWALT
$2.955
Each (In a Pack of 2)
units
2.5mm - HSS-R 57 mm
RS Stock No. 707-2721
Mfr. Part No.DT6521-QZ
BrandDeWALT
$16.31
Each
units
7mm Jobber Carbide Tipped 123 mm
RS Stock No. 424-4119
Mfr. Part No.DT5056-QZ
BrandDeWALT
$26.82
Each
units
10mm - HSS-R 133 mm
RS Stock No. 706-8696
Mfr. Part No.DT6517-QZ
BrandDeWALT
$4.42
Each
units
4mm Jobber Carbide Tipped 103 mm
RS Stock No. 707-2702
Mfr. Part No.DT6528-QZ
BrandDeWALT
$15.70
Each
units
5.5mm Jobber Carbide Tipped 200 mm
RS Stock No. 424-3986
Mfr. Part No.DT5044-QZ
BrandDeWALT
$7.75
Each
units
4.5mm - HSS-R 80 mm
RS Stock No. 113-8620
Mfr. Part No.DT50008-QZ
BrandDeWALT
$23.00
Each
units
5.5mm Impact Titanium 79 mm