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. 213-376
BrandRS PRO
MYR14.19
1 Box of 10
Box(es)
1.4mm Jobber HSS 40 mm
RS Stock No. 213-433
BrandRS PRO
MYR21.44
1 Box of 10
Box(es)
1.7mm Jobber HSS 43 mm
RS Stock No. 213-871
BrandRS PRO
MYR14.55
1 Box of 10
Box(es)
1.5mm Jobber HSS 40 mm
RS Stock No. 788-3760
Mfr. Part No.2608596062
BrandBosch
MYR41.47
Each
units
8mm Multiconstruction Carbide 250 mm
RS Stock No. 216-599
BrandRS PRO
MYR61.05
1 Box of 10
Box(es)
4.5mm Short HSCo 80 mm
RS Stock No. 212-991
BrandRS PRO
MYR12.48
1 Box of 10
Box(es)
1mm Jobber HSS 32.5 mm
RS Stock No. 784-4829
BrandRS PRO
MYR28.88
Each
units
15mm Jobber HSS 156 mm
RS Stock No. 216-612
BrandRS PRO
MYR42.23
1 Box of 10
Box(es)
3.5mm Jobber HSCo 70 mm
RS Stock No. 213-411
BrandRS PRO
MYR31.31
1 Box of 10
Box(es)
3mm Jobber HSS 61 mm
RS Stock No. 216-498
BrandRS PRO
MYR29.15
1 Box of 10
Box(es)
3mm Jobber HSCo 61 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. 787-7254
BrandRS PRO
MYR5.51
1 Tube of 5
Tube(s)
2mm Short HSS 38 mm
RS Stock No. 768-3309
Mfr. Part No.2608595079
BrandBosch
MYR61.482
Each (In a Pack of 5)
units
11mm Twist Drill HSS 142 mm
RS Stock No. 694-447
BrandRS PRO
MYR55.51
Each
units
17mm Blacksmiths HSS 184 mm
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. 424-4002
Mfr. Part No.DT5046-QZ
BrandDeWALT
MYR16.39
Each
units
5mm - HSS-R 86 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. 768-3148
Mfr. Part No.2608585875
BrandBosch
MYR12.669
Each (In a Pack of 10)
units
2.5mm Twist Drill HSS 57 mm
RS Stock No. 768-3220
Mfr. Part No.2608595051
BrandBosch
MYR6.355
Each (In a Pack of 10)
units
2mm Twist Drill HSS 49 mm
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