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 Drilling Application Material Overall Length
RS Stock No. 217-334
BrandRS PRO
$13.66
1 Box of 10
Box(es)
2.5mm Jobber - HSS 57 mm
RS Stock No. 213-023
BrandRS PRO
$16.25
1 Box of 10
Box(es)
4.5mm Jobber - HSS 80.5 mm
RS Stock No. 668-0964
BrandRS PRO
$27.27
1 Box of 10
Box(es)
4.7mm Jobber - HSS 86 mm
RS Stock No. 214-751
BrandRS PRO
$6.82
1 Box of 10
Box(es)
1.5mm Short - HSS 32 mm
RS Stock No. 668-0952
BrandRS PRO
$24.07
1 Box of 10
Box(es)
3.9mm Jobber - HSS 75 mm
RS Stock No. 213-950
BrandRS PRO
$13.95
1 Box of 10
Box(es)
2.2mm Jobber - HSS 53 mm
RS Stock No. 212-907
BrandRS PRO
$33.75
1 Box of 5
Box(es)
10.5mm Jobber - HSS 134 mm
RS Stock No. 217-340
BrandRS PRO
$18.51
1 Box of 10
Box(es)
1.5mm Jobber - HSS 40 mm
RS Stock No. 213-304
BrandRS PRO
$17.31
1 Box of 10
Box(es)
3.5mm Jobber - HSS 70 mm
RS Stock No. 434-4411
BrandRS PRO
$4.79
Each
units
9.5mm Jobber - HSS 133 mm
RS Stock No. 213-887
BrandRS PRO
$5.79
1 Box of 10
Box(es)
1mm Jobber - HSS 34 mm
RS Stock No. 522-6623
BrandRS PRO
$9.88
Each
units
3.5mm Jobber; Long - HSS 250 mm
RS Stock No. 213-916
BrandRS PRO
$11.92
1 Box of 10
Box(es)
2mm Jobber - HSS 49 mm
RS Stock No. 212-878
BrandRS PRO
$46.34
1 Box of 5
Box(es)
12mm Jobber - HSS 152 mm
RS Stock No. 216-448
BrandRS PRO
$36.26
1 Box of 10
Box(es)
7.5mm Jobber - HSCo 109 mm
RS Stock No. 784-4857
BrandRS PRO
$18.94
Each
units
20mm Jobber - HSS 156 mm
RS Stock No. 213-405
BrandRS PRO
$16.39
1 Box of 10
Box(es)
3.2mm Jobber - HSS 65 mm
RS Stock No. 784-4829
BrandRS PRO
$11.93
Each
units
15mm Jobber - HSS 156 mm
RS Stock No. 213-499
BrandRS PRO
$51.82
1 Box of 10
Box(es)
10mm Jobber - HSS 133 mm
RS Stock No. 217-413
BrandRS PRO
$13.73
1 Box of 10
Box(es)
3.5mm Jobber - HSS 70 mm
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