Drop-in anchors are internally threaded, deformation-controlled expansion anchors with a preassembled expander plug, suitable for flush mount applications in solid base materials. The anchor is set by driving the expansion plug towards the bottom of the anchor using the setting tool. Drop-in anchors are also available in coilthreaded versions for 1/2" and 3/4" coil threaded rod.

The Lipped Drop-In (DIAL) features a lip at the top of the anchor body that keeps the top of the anchor flush with the concrete. This eliminates the need for precisely drilled hole depths and allows for easier flush installation, consistent embedment and uniform rod lengths.

Short Drop-In anchors are for use in solid and hollow concrete. The short length permits shallow embedment that helps to avoid drilling into rebar or prestressing strands. The wide surface flange enables the Short Drop-In to be installed in deep or bottomless holes. Fixed-depth drill bits are also available to take the guesswork out of drilling to the correct depth for these 3/8" and 1/2" Short Drop-Ins. Using the fixeddepth bit drill bit prevents overdrilling, which saves time and prolongs bit life.


Carbon and stainless steel (DIA37S and DIA50S available in zinc-plated, carbon steel only)


Carbon steel: Zinc plated.

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Zinc Plated

Head Type

Thread Size

Body Length

Thread Length

Drill Bit Dia.

Item #

Item Name

Package Quantity


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DIA50C N/A 1/2-6 Coil-Thread Drop In Anchor Zinc Plated Steel (50/Box) N/A 50 $66.07 Add To Cart
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DIA75C N/A 3/4-5 Coil-Thread Drop In Anchor Zinc Plated Steel (20/Box) N/A 20 $68.43 Add To Cart
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