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, it’s 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 it’s 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 it’s 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 Material Overall Length
RS Stock No. 695-0614
Mfr. Part No.A9203.5
BrandDormer
MYR26.62
Each
units
3.5mm Short HSCo 52 mm
RS Stock No. 695-0627
Mfr. Part No.A9204.5
BrandDormer
MYR37.31
Each
units
4.5mm Short HSCo 58 mm
RS Stock No. 513-023
Mfr. Part No.A100 2-8MM
BrandDormer
MYR7.95
Each (In a Pack of 5)
units
2.8mm Jobber HSS 61 mm
RS Stock No. 695-0462
Mfr. Part No.A9002.5
BrandDormer
MYR31.55
Each
units
2.5mm Jobber HSCo 57 mm
RS Stock No. 299-7928
Mfr. Part No.A170-20,00
BrandDormer
MYR312.48
Each
units
20mm - HSS 158 mm
RS Stock No. 695-0471
Mfr. Part No.A9003.5
BrandDormer
MYR38.17
Each
units
3.5mm Jobber HSCo 70 mm
RS Stock No. 695-0623
Mfr. Part No.A9204.2
BrandDormer
MYR36.45
Each
units
4.2mm Short HSCo 55 mm
RS Stock No. 299-7883
Mfr. Part No.A170-18,00
BrandDormer
MYR249.38
Each
units
18mm - HSS 157 mm
RS Stock No. 695-0475
Mfr. Part No.A9009/64
BrandDormer
MYR35.77
Each
units
9/64in Jobber HSCo 73 mm
RS Stock No. 695-0605
Mfr. Part No.A9203.3
BrandDormer
MYR21.04
Each
units
3.3mm Short HSCo 49 mm
RS Stock No. 343-1390
Mfr. Part No.R100 3.0MM
BrandDormer
MYR121.82
Each
units
3mm Jobber Solid Carbide 61 mm
RS Stock No. 695-0639
Mfr. Part No.A9205.0
BrandDormer
MYR37.82
Each
units
5mm Short HSCo 62 mm
RS Stock No. 728-7201
Mfr. Part No.A1251.5X160
BrandDormer
MYR77.05
Each
units
1.5mm Long HSS 160 mm
RS Stock No. 794-7473
Mfr. Part No.2FRA00210.0
BrandDormer
MYR273.90
1 Box of 10
Box(es)
10mm Jobber HSS-TiN 133 mm
RS Stock No. 813-0051
Mfr. Part No.A002S9.0
BrandDormer
MYR39.55
Each
units
9mm Jobber HSS-TiN 125 mm
RS Stock No. 343-1413
Mfr. Part No.R100 4.0MM
BrandDormer
MYR207.77
Each
units
4mm Jobber Solid Carbide 75 mm
RS Stock No. 695-0598
Mfr. Part No.A9202.5
BrandDormer
MYR24.82
Each
units
2.5mm Short HSCo 43 mm
RS Stock No. 728-7260
Mfr. Part No.A1255.0X250
BrandDormer
MYR107.18
Each
units
5mm Long HSS 250 mm
RS Stock No. 794-7335
Mfr. Part No.A0026.0
BrandDormer
MYR54.99
1 Box of 5
Box(es)
6mm Jobber HSS-TiN 93 mm
RS Stock No. 695-0434
Mfr. Part No.A94010.2
BrandDormer
MYR369.10
Each
units
10.2mm Long HSCo 184 mm