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 Shank Size Series Shank Type Cutting Length Point Angle
RS Stock No. 213-821
BrandRS PRO
€10.45
1 Box of 10
Box(es)
4mm Jobber - HSS 75 mm - - - - -
RS Stock No. 213-411
BrandRS PRO
€8.01
1 Box of 10
Box(es)
3mm Jobber - HSS 61 mm - - - - -
RS Stock No. 408-7994
BrandRS PRO
€23.70
Each
units
18mm Blacksmiths - HSS 150 mm - - - - -
RS Stock No. 213-203
BrandRS PRO
€15.61
1 Box of 10
Box(es)
5mm Jobber - HSS 86 mm - - - - -
RS Stock No. 213-922
BrandRS PRO
€5.65
1 Box of 10
Box(es)
2.5mm Jobber - HSS 57 mm - - - - -
RS Stock No. 787-7349
BrandRS PRO
€6.96
1 Tube of 5
Tube(s)
0.6mm Jobber - HSS 24 mm - - - - -
RS Stock No. 213-871
BrandRS PRO
€4.93
1 Box of 10
Box(es)
1.5mm Jobber - HSS 40 mm - - - - -
RS Stock No. 694-453
BrandRS PRO
€27.22
Each
units
19mm Blacksmiths - HSS 198 mm - - - - -
RS Stock No. 787-7324
BrandRS PRO
€9.73
1 Tube of 5
Tube(s)
0.35mm Jobber - HSS 19 mm - - - - -
RS Stock No. 213-635
BrandRS PRO
€23.21
1 Box of 10
Box(es)
6mm Jobber - HSS 93 mm - - - - -
RS Stock No. 408-7988
BrandRS PRO
€19.56
Each
units
16mm Blacksmiths - HSS 150 mm - - - - -
RS Stock No. 787-7321
BrandRS PRO
€7.34
1 Tube of 5
Tube(s)
0.45mm Jobber - HSS 21 mm - - - - -
RS Stock No. 787-7302
BrandRS PRO
€18.63
1 Tube of 5
Tube(s)
7.5mm Short - HSS 74 mm - - - - -
RS Stock No. 213-095
BrandRS PRO
€18.03
1 Box of 10
Box(es)
6mm Jobber - HSS 93.5 mm - - - - -
RS Stock No. 787-7359
BrandRS PRO
€5.58
1 Tube of 5
Tube(s)
0.8mm Jobber - HSS 30 mm - - - - -
RS Stock No. 213-168
BrandRS PRO
€21.72
1 Box of 10
Box(es)
6.5mm Jobber - HSS 101 mm - - - - -
RS Stock No. 213-146
BrandRS PRO
€23.93
1 Box of 10
Box(es)
7mm Jobber - HSS 110 mm - - - - -
RS Stock No. 214-177
BrandRS PRO
€13.31
1 Box of 10
Box(es)
4.5mm Jobber - HSS 80 mm - - - - -
RS Stock No. 787-7377
BrandRS PRO
€6.12
1 Tube of 5
Tube(s)
1.25mm Jobber - HSS 38 mm - - - - -
RS Stock No. 213-124
BrandRS PRO
€33.63
1 Box of 10
Box(es)
8mm Jobber - HSS 117 mm - - - - -
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