Impact Driver Bits
Impact driver bits are made from tool steel, which is typically employed in industrial tools for machining processes. Tool steels consist of iron alloyed with carbon and are usually produced in a smaller scale when compared to steels meant for consumer products. They are classified as cold cutting, hot cutting, high-speed and impact resistant steels. Apart from carbon, tungsten and molybdenum are also used to increase the toughness and strength of steel.
Steels that are brittle are not suitable for impact and shock, but they may be stable at higher temperatures. Impact resistant steels are suitable for jackhammer bits, cold chisels, crowbars, and impact driver bits. They are manufactured in several grades like s7, s5 and 4130. These steels withstand recurring work tension, without cracking and shattering. Impact drivers employ hammering action and rotating motion, so that the bits and attachments move, while the whole tool does not have to turn. Apart from the turning force, the impact driver exerts a downward force that persuades screw-based fasteners to penetrate. Further, it is also employed for hex-headed fasteners and flat-headed or Phillips-head types. Sometimes, they are equipped with boring drill bits. These may be masonry bits that are employed to drill through brick or concrete and other strong surfaces.
Impact driver bits are manufactured from specially tempered tool steel namely, S2 Spring steel. They are heat-treated to ensure the highest possible toughness and durability. The shank of each bit is compacted and rounded to enhance balance and minimize tremors. Their tips are toughened for better durability. Further, a milled finish assures the finest fit.
Several impact driver kits that are available in the market come with ¼-inch hex drive screwdriver bits. They work well with cordless drills and screwdrivers, but impact drivers exert more torque when compared to them. As a result, a new range of stronger and harder impact driver bits have been introduced by Milwaukee, Makita and DeWalt. They called ‘Milwaukee Shockwave’, ‘Impact Driver’ and ‘Impact Ready’ respectively, and are said to last longer than the earlier screwdriver bits.