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. 213-821
BrandRS PRO
SGD18.12
1 Box of 10
Box(es)
4mm Jobber - HSS-TiN 75 mm
RS Stock No. 213-411
BrandRS PRO
SGD15.70
1 Box of 10
Box(es)
3mm Jobber - HSS-TiN 61 mm
RS Stock No. 216-599
BrandRS PRO
SGD38.07
1 Box of 10
Box(es)
4.5mm Short - HSCo 80 mm
RS Stock No. 213-916
BrandRS PRO
SGD9.76
1 Box of 10
Box(es)
2mm Jobber - HSS-TiN 49 mm
RS Stock No. 216-583
BrandRS PRO
SGD107.10
1 Box of 10
Box(es)
5mm Jobber - HSCo 86 mm
RS Stock No. 216-498
BrandRS PRO
SGD35.61
1 Box of 10
Box(es)
3mm Jobber - HSCo 61 mm
RS Stock No. 216-662
BrandRS PRO
SGD38.76
1 Box of 10
Box(es)
2mm Jobber - HSCo 49 mm
RS Stock No. 213-922
BrandRS PRO
SGD11.08
1 Box of 10
Box(es)
2.5mm Jobber - HSS-TiN 57 mm
RS Stock No. 213-304
BrandRS PRO
SGD18.27
1 Box of 10
Box(es)
3.5mm Jobber - HSS-TiN 70 mm
RS Stock No. 212-963
BrandRS PRO
SGD18.21
1 Box of 10
Box(es)
3mm Jobber - HSS 59 mm
RS Stock No. 214-177
BrandRS PRO
SGD23.10
1 Box of 10
Box(es)
4.5mm Jobber - HSS-TiN 80 mm
RS Stock No. 213-203
BrandRS PRO
SGD27.96
1 Box of 10
Box(es)
5mm Jobber - HSS-TiN 86 mm
RS Stock No. 217-211
BrandRS PRO
SGD71.90
1 Box of 10
Box(es)
7mm Jobber - HSS -
RS Stock No. 408-7972
BrandRS PRO
SGD28.95
Each
units
14mm Blacksmiths - HSS 150 mm
RS Stock No. 212-935
BrandRS PRO
SGD81.12
1 Box of 5
Box(es)
13mm Jobber - HSS 152 mm
RS Stock No. 215-007
BrandRS PRO
SGD33.91
1 Box of 10
Box(es)
5mm Short - HSS 62 mm
RS Stock No. 787-7374
BrandRS PRO
SGD11.56
1 Tube of 5
Tube(s)
1.1mm Jobber - HSS 36 mm
RS Stock No. 213-792
BrandRS PRO
SGD22.67
1 Box of 10
Box(es)
4.4mm Jobber - HSS-TiN 80 mm
RS Stock No. 216-612
BrandRS PRO
SGD31.30
1 Box of 10
Box(es)
3.5mm Jobber - HSCo 70 mm
RS Stock No. 212-957
BrandRS PRO
SGD15.74
1 Box of 10
Box(es)
3.3mm Jobber - HSS 70.5 mm
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