The shank of the SDS bit is about the size of a small finger with two slots and two groves. They provide a good balance of strength and accuracy when drilling into a variety of materials.

SDS – refers to spline drive system and are designed for use in hammer drills with a quick disconnect chuck. Jobber-length drill bits are the most commonly used drill-bit length.

These bits usually have a completely round shank or flat sides that fit into the chuck and are manufactured in many different diameters and lengths.

Straight Shank – the straight shank carbide tipped drill bits are designed for use in the Jacobs style chuck, one that requires a chuck key.

They must meetĪNSI Standard B212-15-1994, be the correct diameter and length for the Tapcon being installed and must be used in a hammer drill that is set in the hammer and rotation mode.

There are other styles of bits that can be used for drilling holes in the base material for the Tapcon concrete screws. Unlike the standard rotary drill that requires the bit to cut the material to produce a hole, the hammer drill pulverizes the material with the hammering motion and the rotation removes the debris via the fluted section of the drill bit. To produce the quality hole required, the Tapcon bit must be used in a rotary hammer drill.

Hole tolerance is critical when installing Tapcon concrete screws. The Tapcon drill bit must be used in a hammer drill, and the hammer drill must be set in the hammer and rotation mode. The length of the bit is the same whether it’s a flat Phillips countersunk head or a hex washer head. The chart for each length of Tapcon and the correct corresponding bit that must be used is included below: The drilling depth of each length of the drill bit is 1-1/2” less than the overall length.Įach and every different length of Tapcon screw requires a specific length bit to be used to meet minimum hold depth requirements. The 5/32” Tapcon drill bit comes in three lengths and the 1/4” Tapcon drill bit comes in five lengths. The designated length of each drill bit is measured as an overall length. The length of the Tapcon bit to use must be long enough to ensure that the hole drilled into the base material is 1/2” deeper than the Tapcon screw will penetrate the base material and will allow the Tapcon screw to meet minimum embedment depth of 1”. The 3/16” Tapcon requires the use of 5/32” diameter bit, and the 1/4” Tapcon requires a 3/16” diameter bit. The Tapcon drill bit that is used depends on the diameter of the Tapcon screw being installed. Solder has a lower melting point than the brazing method and will not last as long. Older style or less expensive carbide-tipped bits have the carbide soldered on. The quality ANSI standard carbide tips are brazed onto the end of the bit to ensure long life and consistent hole tolerance. If the installation toolkit is being used then the special Tapcon bit must be used.Ĭarbide Tipped Drill Bits for Tapcon ScrewsĬarbide tipped bit must be used for drilling the hole into the base material for the Tapcon screw. This flat end of the Tapcon bit is aligned flat side out when inserted into the installation toolkit so that a set screw can be tightened against it, holding the Tapcon bit tightly in the installation tool.Īny carbide tipped masonry bit that is manufactured to meetĪNSI standard B212-15-1994 can be used for drilling holes in masonry that Tapcon masonry anchors are installed in. As a result the cobalt drill is continually drilling into hardened steel.The flat end of the Tapcon drill bit is on the opposite end of the carbide tip and is the end of the bit that is inserted into the installation tool kit. To cut beneath the area which is hardening. The cobalt drill, with its thick web, cannot be fed at a fast enough rate This means the drill is cutting softer steel. Penetrate the work hardening stainless fast enough to continually cut beneath the chip which is hardening from deformation. HSS Magnum™ Super Premium Drill Bits - Norseman™ Drill and Tool a drill with its thin web will They can be used to drill metal, hardwood, and most other materials at greater cutting speeds than carbon steel bits, and have largely High speed steel (HSS) is a form of tool steel high speed steel bits are hard, and much more resistant to heat than high carbon steel. High speed steel taps, feed and speed for both drills and taps and calculator, drill bit terminology and information on our growing company. Since 1951, Norseman™ Drill and Tool - presents our current tools in the product catalog in downloadable sections, along with troubleshooting of high speed steel drill bits and America´s Finest High–Speed Cutting Tools™

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