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. 828-202
BrandRS PRO
$8.82
Each
units
3.3mm Hexagon - HSS -
RS Stock No. 212-991
BrandRS PRO
$12.37
1 Box of 10
Box(es)
1mm Jobber - HSS 32.5 mm
RS Stock No. 694-431
BrandRS PRO
$32.11
Each
units
15mm Blacksmiths - HSS 150 mm
RS Stock No. 787-7267
BrandRS PRO
$3.78
1 Tube of 5
Tube(s)
3mm Short - HSS 46 mm
RS Stock No. 828-218
BrandRS PRO
$8.82
Each
units
4.2mm Hexagon - HSS -
RS Stock No. 213-067
BrandRS PRO
$22.08
1 Box of 10
Box(es)
4mm Jobber - HSS 75.5 mm
RS Stock No. 669-9375
BrandRS PRO
$7.51
Each
units
4.2mm Hexagon - HSS 45 mm
RS Stock No. 522-6932
BrandRS PRO
$87.75
Each
units
12mm Jobber; Long - HSS 315 mm
RS Stock No. 213-916
BrandRS PRO
$13.23
1 Box of 10
Box(es)
2mm Jobber - HSS 49 mm
RS Stock No. 213-950
BrandRS PRO
$15.48
1 Box of 10
Box(es)
2.2mm Jobber - HSS 53 mm
RS Stock No. 212-985
BrandRS PRO
$13.31
1 Box of 10
Box(es)
1.5mm Jobber - HSS 40.5 mm
RS Stock No. 213-073
BrandRS PRO
$20.31
1 Box of 10
Box(es)
3.5mm Jobber - HSS 70 mm
RS Stock No. 213-089
BrandRS PRO
$16.36
1 Box of 10
Box(es)
2.5mm Jobber - HSS 56 mm
RS Stock No. 212-979
BrandRS PRO
$8.81
1 Box of 10
Box(es)
2mm Jobber - HSS 47.5 mm
RS Stock No. 408-8004
BrandRS PRO
$53.37
Each
units
20mm Blacksmiths - HSS 150 mm
RS Stock No. 212-963
BrandRS PRO
$21.83
1 Box of 10
Box(es)
3mm Jobber - HSS 59 mm
RS Stock No. 212-957
BrandRS PRO
$19.80
1 Box of 10
Box(es)
3.3mm Jobber - HSS 70.5 mm
RS Stock No. 213-629
BrandRS PRO
$61.39
1 Box of 10
Box(es)
6.3mm Jobber - HSS 101 mm
RS Stock No. 784-4813
BrandRS PRO
$208.31
Each
units
31mm Morse Taper - HSS 301 mm
RS Stock No. 213-635
BrandRS PRO
$54.52
1 Box of 10
Box(es)
6mm Jobber - HSS 93 mm
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