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The sharp threads create their own mating thread when drilled into the material
Use these grade 8 partially threaded screws anywhere a hex bolt may be used
Complete with a zinc plated finish these threaded rods are stainless steel to withstand corrosion
These drill into the roof to remove material and have a neoprene washer provide a water tight seal
* UPC: 008236082036
HILLMAN 3/8 in. D X 3 in. L Steel Hex Head Sleeve Anchors 20 pk tier-discount-3 The sharp threads create theirThe Power Bolt anchor, is a heavy duty sleeve style, self locking anchor which is vibration resistant and removable. The design allows them to anchor into concrete, brick, block or stone. Turning the nut pulls the working end of the sleeve anchor up through the sleeve, expanding and anchoring itself securely in the base material. The removable internal bolt makes this anchor suitable for applications such as mounting machinery which may need to be
