What is a parallel shank drill?
Parallel Shank (Short Series or Jobbers) Twist Drill. The drill has two parallel shank of approximately the same diameter as the cutting end. The diameter of the drill ranges from 0.2 to 16 mm increasing by 0.02 to 0.03 mm in lower series to 0.25 mm in higher series.
What is a HSS twist drill bit used for?
HSS or high-speed steel bits are made from carbon steel with the addition of other elements such as chrome and vanadium. This allows them to be used at high drilling speeds. HSS bits can be used to drill iron, steel and other metals such as brass, copper and aluminum alloy.
What is the shank of a twist drill?
The shank is the end of a drill bit grasped by the chuck of a drill. The cutting edges of the drill bit contact the workpiece, and are connected via the shaft with the shank, which fits into the chuck.
What is HSS drill bit?
HSS drill bits, an acronym for high speed steel drill bits are extremely hardwearing and particularly well designed for drilling into metal surfaces, as they are much more resistant to the heat generated from the fast speed operation. HSS bits can be also be used for drilling wood and plastic materials.
What is the point angle of a twist drill?
118°
For general-purpose twist drills the helix angle is about 32°. The angle formed by the two sides of the tapering point is 118° for standard drills, while for drilling tough metals, a flatter point with a 135° angle is recommended.
Can I use HSS drill bits for wood?
High-speed steel (HSS) drill bits can drill wood, fiberglass, polyvinyl chloride (PVC) and soft metals such as aluminum. They work for drilling wood, metal, fiberglass and PVC. Carbide-tipped drill bits stay sharp much longer than steel, HSS or titanium bits. They’re effective for drilling tile and masonry.
What is the shank size?
The major advange with this type of shank is very acrurate centering. Triangle Shank – The Triangle shank is obvious because it has three sides. A triangle shank is just an alternative that is used in place of a hex shank for drills. While you do see this type, it’s not very common.
Can HSS drill stainless steel?
HSS or High-Speed-Steel bits are designed for use on stainless steel and can be used for hand and machine drilling.
What is the best practice when drilling with a twist drill?
Thin materials should be supported underneath with a sacrificial piece of wood so that the pressure of drilling does not kink or distort the work piece. When drilling through holes, reduce the pressure as the bit approaches the other side of the material.
Can you use HSS drill bit wood?
High-Speed Steel (HSS) drill bits are used for drilling wood, light metals, fiberglass and PVC. Black oxide-coated drill bits are more durable than standard HSS bits and the coating helps the drill bit resist rust.