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. 213-275
BrandRS PRO
$47.63
1 Box of 10
Box(es)
5.7mm Jobber - HSS 93 mm
RS Stock No. 784-4813
BrandRS PRO
$208.31
Each
units
31mm Morse Taper - HSS 301 mm
RS Stock No. 408-7988
BrandRS PRO
$39.53
Each
units
16mm Blacksmiths - HSS 150 mm
RS Stock No. 522-6566
BrandRS PRO
$10.37
Each
units
3mm Jobber; Long - HSS 160 mm
RS Stock No. 213-411
BrandRS PRO
$19.21
1 Box of 10
Box(es)
3mm Jobber - HSS 61 mm
RS Stock No. 787-7239
BrandRS PRO
$7.06
1 Tube of 5
Tube(s)
1mm Short - HSS 26 mm
RS Stock No. 787-7315
BrandRS PRO
$22.68
1 Tube of 5
Tube(s)
0.25mm Jobber - HSS 19 mm
RS Stock No. 216-498
BrandRS PRO
$42.69
1 Box of 10
Box(es)
3mm Jobber - HSCo 61 mm
RS Stock No. 787-7337
BrandRS PRO
$15.35
1 Tube of 5
Tube(s)
0.5mm Jobber - HSS 22 mm
RS Stock No. 408-7972
BrandRS PRO
$36.60
Each
units
14mm Blacksmiths - HSS 150 mm
RS Stock No. 694-447
BrandRS PRO
$41.61
Each
units
17mm Blacksmiths - HSS 184 mm
RS Stock No. 214-240
BrandRS PRO
$57.31
1 Box of 10
Box(es)
7mm Jobber - HSS 109 mm
RS Stock No. 213-720
BrandRS PRO
$21.00
1 Box of 10
Box(es)
3.6mm Jobber - HSS 70 mm
RS Stock No. 216-561
BrandRS PRO
$110.61
1 Box of 10
Box(es)
8.5mm Jobber - HSCo 117 mm
RS Stock No. 522-6825
BrandRS PRO
$38.46
Each
units
8mm Jobber; Long - HSS 315 mm
RS Stock No. 213-809
BrandRS PRO
$27.98
1 Box of 10
Box(es)
4.2mm Jobber - HSS 75 mm
RS Stock No. 522-6831
BrandRS PRO
$58.64
Each
units
8mm Jobber, Long - HSS 400 mm
RS Stock No. 213-736
BrandRS PRO
$24.01
1 Box of 10
Box(es)
3.8mm Jobber - HSS 75 mm
RS Stock No. 213-297
BrandRS PRO
$47.63
1 Box of 10
Box(es)
5.6mm Jobber - HSS 93 mm
RS Stock No. 784-4844
BrandRS PRO
$38.64
Each
units
18.5mm Jobber - HSS 156 mm
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