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. 213-916
BrandRS PRO
TWD219.00
1 Box of 10
Box(es)
2mm Jobber - HSS-TiN 49 mm
RS Stock No. 794-7606
Mfr. Part No.A7774.0
BrandDormer
TWD1,767.00
1 Box of 10
Box(es)
4mm Jobber - HSS-E 75 mm
RS Stock No. 113-8622
Mfr. Part No.DT50010-QZ
BrandDeWALT
TWD350.00
Each
units
6.5mm Impact - Titanium 82 mm
RS Stock No. 545-806
Mfr. Part No.A100 1.00MM
BrandDormer
TWD67.40
Each (In a Pack of 5)
units
1mm Jobber Multi-Material HSS 34 mm
RS Stock No. 787-7330
BrandRS PRO
TWD296.00
1 Tube of 5
Tube(s)
0.4mm Jobber - HSS 21 mm
RS Stock No. 667-3540
Mfr. Part No.R45810.0
BrandDormer
TWD2,488.00
Each
units
10mm Short - Solid Carbide 89 mm
RS Stock No. 695-0507
Mfr. Part No.A9005.5
BrandDormer
TWD495.00
Each
units
5.5mm Jobber - HSCo 93 mm
RS Stock No. 759-5772
Mfr. Part No.2608596721
BrandBosch
TWD677.00
Each
units
7mm Self Centring - HSS 109 mm
RS Stock No. 216-640
BrandRS PRO
TWD374.00
1 Box of 10
Box(es)
1mm Jobber - HSCo 34 mm
RS Stock No. 695-0443
Mfr. Part No.A9001.0
BrandDormer
TWD284.00
Each
units
1mm Jobber - HSCo 34 mm
RS Stock No. 216-561
BrandRS PRO
TWD2,490.00
1 Box of 10
Box(es)
8.5mm Jobber - HSCo 117 mm
RS Stock No. 213-742
BrandRS PRO
TWD363.00
1 Box of 10
Box(es)
3.4mm Jobber - HSS-TiN 70 mm
RS Stock No. 213-843
BrandRS PRO
TWD418.00
1 Box of 10
Box(es)
2.6mm Jobber - HSS-TiN 57 mm
RS Stock No. 216-662
BrandRS PRO
TWD868.00
1 Box of 10
Box(es)
2mm Jobber - HSCo 49 mm
RS Stock No. 794-7256
Mfr. Part No.A0023.4
BrandDormer
TWD280.00
1 Box of 5
Box(es)
3.4mm Jobber Multi-Material HSS-TiN 70 mm
RS Stock No. 695-0504
Mfr. Part No.A9006.0
BrandDormer
TWD476.00
Each
units
6mm Jobber - HSCo 93 mm
RS Stock No. 794-7603
Mfr. Part No.A7773.5
BrandDormer
TWD1,616.00
1 Box of 10
Box(es)
3.5mm Jobber - HSS-E 70 mm
RS Stock No. 113-8615
Mfr. Part No.DT50000-QZ
BrandDeWALT
TWD308.00
Each
units
3mm Impact - Titanium 65 mm
RS Stock No. 707-2790
Mfr. Part No.DT4908-QZ
BrandDeWALT
TWD296.00
Each
units
6mm - - HSCo 93 mm
New
RS Stock No. 193-1621
Mfr. Part No.R4634.0
BrandDormer
TWD3,459.00
Each
units
4mm M Drill Stainless Steel Carbide 74 mm