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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Viewing 601 - 620 of 1124 products
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Description Price Diameter Type Drilling Application Material Overall Length
RS Stock No. 728-7112
Mfr. Part No.A1203.5
BrandDormer
$3.21
Each
units
3.5mm Short - HSS 52 mm
RS Stock No. 794-7552
Mfr. Part No.A1088.0
BrandDormer
$185.08
1 Box of 10
Box(es)
8mm Jobber Multi-Material HSS 117 mm
RS Stock No. 794-7458
Mfr. Part No.2FRA0028.0
BrandDormer
$71.62
1 Box of 10
Box(es)
8mm Jobber Multi-Material HSS-TiN 117 mm
RS Stock No. 707-2819
Mfr. Part No.DT4914-QZ
BrandDeWALT
$23.37
Each
units
10mm - - HSCo 133 mm
RS Stock No. 794-7559
Mfr. Part No.A1089.0
BrandDormer
$244.98
1 Box of 10
Box(es)
9mm Jobber Multi-Material HSS 125 mm
RS Stock No. 113-8620
Mfr. Part No.DT50008-QZ
BrandDeWALT
$20.91
Each
units
5.5mm Impact - Titanium 79 mm
RS Stock No. 343-1407
Mfr. Part No.R100 3.5MM
BrandDormer
$57.44
Each
units
3.5mm Jobber - Solid Carbide 70 mm
RS Stock No. 813-0077
Mfr. Part No.A002S12.0
BrandDormer
$31.19
Each
units
12mm Jobber - HSS-TiN 151 mm
RS Stock No. 343-1413
Mfr. Part No.R100 4.0MM
BrandDormer
$62.51
Each
units
4mm Jobber - Solid Carbide 75 mm
RS Stock No. 299-7811
Mfr. Part No.A170-15,00
BrandDormer
$90.81
Each
units
15mm - - HSS 156 mm
New
RS Stock No. 193-1601
Mfr. Part No.R4679.5
BrandDormer
$206.32
Each
units
9.5mm M Drill - Carbide 89 mm
RS Stock No. 424-4147
Mfr. Part No.DT5058-QZ
BrandDeWALT
$25.42
Each
units
11mm - - HSS-R 142 mm
RS Stock No. 394-6959
Mfr. Part No.A002-12.2
BrandDormer
$34.86
Each
units
12.2mm Jobber - HSS 151 mm
RS Stock No. 707-2787
Mfr. Part No.DT4903-QZ
BrandDeWALT
$12.67
Each
units
3.5mm - - HSCo 70 mm
RS Stock No. 794-7432
Mfr. Part No.2FRA0024.5
BrandDormer
$32.46
1 Box of 10
Box(es)
4.5mm Jobber Multi-Material HSS-TiN 80 mm
RS Stock No. 136-3938
Mfr. Part No.A1194.9
BrandDormer
$6.265
Each (In a Pack of 10)
units
4.9mm Stub - HSS 62 mm
RS Stock No. 136-8727
Mfr. Part No.A08910
BrandDormer
$35.40
1 Set
Set(s)
4 mm, 5 mm, 6 mm, 8 mm, 10 mm Drill Set - HSS 75 mm, 86 mm, 93 mm, 117 mm, 133 mm
RS Stock No. 794-7404
Mfr. Part No.A00212.0
BrandDormer
$73.06
Each
units
12mm Jobber Multi-Material HSS-TiN 151 mm
New
RS Stock No. 193-1607
Mfr. Part No.R46712.5
BrandDormer
$390.53
Each
units
12.5mm M Drill - Carbide 107 mm
RS Stock No. 768-3113
Mfr. Part No.2608585526
BrandBosch
$20.604
Each (In a Pack of 5)
units
10.6mm Jobber - HSS-G 133 mm
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