Jobber Length Metal Drill Bits

Available in High Speed Steel and Titanium Nitride-coated HSS
Point Cut: 1/8� dia. with split point DIN 1412 C
Point angle: 118�
Helix angle: 20� to 30�
Right-hand cutting

Jobber Drill Bits

All Jobber drill bits have split points and come in two different materials. These high performance twist drill bits are suitable for all normal drilling in conventional materials.

The split point reduces �walking� which is the tendency of a spinning bit to rotate away from the point at which you want to drill
Available in High Speed Steel and Titanium Nitride-coated (TiN-coated) High Speed Steel (HSS),
The added Titanium Nitride coating increases the surface hardness to approximately 2300 HV and the heat resistance to 1100�F (600�C).
The High Speed Steel (HSS) allows the bit to cut faster than High Carbon Steel. At room temperature HSS and high carbon steel have an equivalent hardness; at elevated temperatures, HSS become advantageous
The Titanium Nitride (TiN) coating is an extremely hard ceramic. It is often used as a coating on HSS to improve hardness and durability

Features

The HSS ground twist drill bit is made of heavy-duty high-speed steel.

The fully ground twist drill bit has a more precise concentricity.
HSS-TiN drill bit models add a titanium nitride coating, to increase the surface hardness and the heat resistance.
The Titanium Nitride coating also provides longer tool life with increased cutting speeds.

Applications

Use High Speed Steel drill bits and HSS-TiN coated drill bits for:

Steel and stainless steel
Alloyed and unalloyed cast iron (up to strength of 13,000 psi)
Grey, malleable, ductile and die-cast iron
Sintered iron, nickel silver, graphite
Short chipping aluminum alloys
Brass and bronze

Jobber Length Drill Bits Overview

For more details, select the "Products" tab and click on the desired "Item Code", or select the "Technical Info" tab.

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