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. 545-878
Mfr. Part No.A100 2.50MM
BrandDormer
SGD2.212
Each (In a Pack of 5)
units
2.5mm Jobber HSS 57 mm
RS Stock No. 213-821
BrandRS PRO
SGD12.77
1 Box of 10
Box(es)
4mm Jobber HSS 75 mm
RS Stock No. 545-806
Mfr. Part No.A100 1.00MM
BrandDormer
SGD3.222
Each (In a Pack of 5)
units
1mm Jobber HSS 34 mm
RS Stock No. 213-411
BrandRS PRO
SGD12.23
1 Box of 10
Box(es)
3mm Jobber HSS 61 mm
RS Stock No. 178-046
Mfr. Part No.A100 1-20
BrandDormer
SGD2.89
Each (In a Pack of 5)
units
1.2mm Jobber HSS 38 mm
RS Stock No. 424-3958
Mfr. Part No.DT5038-QZ
BrandDeWALT
SGD3.185
Each (In a Pack of 2)
units
3mm - HSS-R 61 mm
RS Stock No. 216-599
BrandRS PRO
SGD26.66
1 Box of 10
Box(es)
4.5mm Short HSCo 80 mm
RS Stock No. 178-125
Mfr. Part No.A100 1-70
BrandDormer
SGD2.48
Each (In a Pack of 5)
units
1.7mm Jobber HSS 43 mm
RS Stock No. 545-840
Mfr. Part No.A100 2.00MM
BrandDormer
SGD2.208
Each (In a Pack of 5)
units
2mm Jobber HSS 49 mm
RS Stock No. 216-498
BrandRS PRO
SGD20.03
1 Box of 10
Box(es)
3mm Jobber HSCo 61 mm
RS Stock No. 216-583
BrandRS PRO
SGD40.11
1 Box of 10
Box(es)
5mm Jobber HSCo 86 mm
RS Stock No. 213-916
BrandRS PRO
SGD6.65
1 Box of 10
Box(es)
2mm Jobber HSS 49 mm
RS Stock No. 212-963
BrandRS PRO
SGD12.09
1 Box of 10
Box(es)
3mm Jobber HSS 59 mm
RS Stock No. 214-177
BrandRS PRO
SGD15.59
1 Box of 10
Box(es)
4.5mm Jobber HSS 80 mm
RS Stock No. 216-662
BrandRS PRO
SGD17.59
1 Box of 10
Box(es)
2mm Jobber HSCo 49 mm
RS Stock No. 213-304
BrandRS PRO
SGD12.93
1 Box of 10
Box(es)
3.5mm Jobber HSS 70 mm
RS Stock No. 213-922
BrandRS PRO
SGD7.63
1 Box of 10
Box(es)
2.5mm Jobber HSS 57 mm
RS Stock No. 213-203
BrandRS PRO
SGD21.70
1 Box of 10
Box(es)
5mm Jobber HSS 86 mm
RS Stock No. 794-7527
Mfr. Part No.A1084.5
BrandDormer
SGD59.24
1 Box of 10
Box(es)
4.5mm Jobber HSS 80 mm
RS Stock No. 794-7293
Mfr. Part No.A0024.5
BrandDormer
SGD15.99
1 Box of 5
Box(es)
4.5mm Jobber HSS-TiN 80 mm
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