
TAPCON
Frequently asked questions
Common questions about TAPCON from 3G Electric.
What drill bit sizes are available for TAPCON concrete screw installation bits?
TAPCON installation bits and sleeves are available in drill bit sizes of 5/32 in and 3/16 in, as seen in SKUs such as 15X472 and 4AL11. These sizes correspond to common TAPCON concrete screw diameters. The bits are designed to drill a pilot hole that matches the screw's minor diameter, ensuring proper thread engagement. For larger screws, TAPCON stop bits are offered in 3/8 in and 5/8 in sizes, as in SKUs 4CGZ8 and 4CGZ9. Always verify the screw manufacturer's recommended drill bit size for the specific anchor being installed.
What is the difference between a TAPCON stop bit and a standard installation bit?
A TAPCON stop bit, such as SKU 4CGZ8, includes a built-in depth stop collar that limits the drilling depth to a preset value, typically matching the screw embedment depth. This prevents over-drilling and ensures consistent depth across multiple holes. A standard TAPCON installation bit, like SKU 4AL08, does not have a depth stop; it relies on the operator to control depth manually. Stop bits are preferred for repetitive installations where depth consistency is critical, while standard bits offer flexibility for varying depths.
How does the TAPCON dust blow pump (BP-10) improve concrete screw installation?
The TAPCON dust blow pump (SKU 15X682) is used to remove drilling debris from the hole before inserting the concrete screw. Dust left in the hole can reduce thread engagement and lower pull-out resistance. The pump creates a directed air blast to clear the hole, which is especially important in overhead or vertical applications where gravity does not help. Using the BP-10 after drilling and before screw installation is a recommended step to achieve the rated holding values of TAPCON screws.
What shank types are available for TAPCON concrete screw bits?
TAPCON bits are available with SDS-Plus shanks and 3-flat shanks. SDS-Plus shanks, as in SKU 4CGZ8, are designed for use with rotary hammers that accept SDS-Plus chucks, providing secure retention and allowing for hammer drilling. 3-flat shanks, as in SKU 4AL11, are compatible with standard three-jaw drill chucks and are used with drills that do not have SDS-Plus capability. The choice depends on the drilling equipment available on site.
What is the maximum drilling depth for TAPCON stop bits?
TAPCON stop bits have maximum drilling depths of 3/4 in for the 3/8 in bit (SKU 4CGZ8) and 1 in for the 5/8 in bit (SKU 4CGZ9). These depths are set by the stop collar and are designed to match typical embedment depths for TAPCON concrete screws of corresponding diameters. For deeper installations, standard installation bits without stops are available, such as SKU 4AL08 with a 3 7/8 in maximum drilling depth.
Does 3G Electric supply TAPCON products?
Yes — 3G Electric (S) Pte. Ltd. supplies TAPCON products. We stock the TAPCON catalog and supply genuine factory-original products with full manufacturer warranty and technical support.









