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, its 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 its 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 its 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. 787-7236
BrandRS PRO
$71.55
1 Tube of 5
Tube(s)
10mm Short - HSS 89 mm
RS Stock No. 216-662
BrandRS PRO
$46.46
1 Box of 10
Box(es)
2mm Jobber - HSCo 49 mm
RS Stock No. 784-4810
BrandRS PRO
$17.03
Each
units
14.5mm Jobber - HSS 156 mm
RS Stock No. 217-227
BrandRS PRO
$95.58
1 Box of 10
Box(es)
6.8mm Jobber - HSS 109 mm
RS Stock No. 522-6768
BrandRS PRO
$33.93
Each
units
6mm Jobber; Long - HSS 315 mm
RS Stock No. 216-640
BrandRS PRO
$21.10
1 Box of 10
Box(es)
1mm Jobber - HSCo 34 mm
RS Stock No. 522-6746
BrandRS PRO
$23.25
Each
units
6mm Jobber; Long - HSS 200 mm
RS Stock No. 213-405
BrandRS PRO
$19.14
1 Box of 10
Box(es)
3.2mm Jobber - HSS 65 mm
RS Stock No. 214-925
BrandRS PRO
$23.60
1 Box of 10
Box(es)
3mm Short - HSS 46 mm
RS Stock No. 213-304
BrandRS PRO
$21.90
1 Box of 10
Box(es)
3.5mm Jobber - HSS 70 mm
RS Stock No. 214-199
BrandRS PRO
$72.45
1 Box of 10
Box(es)
7.5mm Jobber - HSS 109 mm
RS Stock No. 522-6803
BrandRS PRO
$42.60
Each
units
7mm Jobber; Long - HSS 315 mm
RS Stock No. 216-599
BrandRS PRO
$45.63
1 Box of 10
Box(es)
4.5mm Short - HSCo 80 mm
RS Stock No. 213-095
BrandRS PRO
$31.31
1 Box of 10
Box(es)
6mm Jobber - HSS 93.5 mm
RS Stock No. 213-893
BrandRS PRO
$10.11
1 Box of 10
Box(es)
1.3mm Jobber - HSS 38 mm
RS Stock No. 787-7298
BrandRS PRO
$42.16
1 Tube of 5
Tube(s)
6.8mm Short - HSS 74 mm
RS Stock No. 668-0952
BrandRS PRO
$26.72
1 Box of 10
Box(es)
3.9mm Jobber - HSS 75 mm
RS Stock No. 784-4848
BrandRS PRO
$27.21
Each
units
19mm Jobber - HSS 156 mm
RS Stock No. 213-130
BrandRS PRO
$47.01
1 Box of 10
Box(es)
7.5mm Jobber - HSS 110 mm
RS Stock No. 213-023
BrandRS PRO
$24.05
1 Box of 10
Box(es)
4.5mm Jobber - HSS 80.5 mm
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