Metallics CSH80F Anchors 1/4 X 6 Hwh 5/16Hd Sl Blu Conc St-zn (Jar 100)

No. The CSH80F is a screw-type concrete anchor, so it threads directly into a drilled hole in concrete, no sleeve, shield or plug needed. Drive it with a 5/16 inch hex driver until the washer head seats on the fixture.

It depends on what you are fastening through. The 6 inch length on the CSH80F is meant for thick fixtures or standoffs, or for cases where you must drive past furring, sheathing or a thick base plate to reach solid concrete. For a strut channel or box fastened flat to the slab or block, a shorter 1/4 inch concrete screw is the better match, since only the threads buried in the base material carry the load.

These are steel with a zinc plating and the blue coating typical of concrete screws, which suits dry interior and protected exterior work. Zinc plated steel is not a stainless substitute, so for standing water, coastal exposure or chemical environments choose a stainless concrete screw instead.

Concrete screws of this type are driven into concrete, and the CSH80F is specified as a concrete anchor. In hollow block the threads only bite where they meet the face shell or a web, so holding values drop sharply compared with a solid slab. For hollow block or brick veneer, a toggle or sleeve type anchor sized to the cavity is the more dependable choice.

The 5/16 inch hex washer head on the CSH80F takes a 5/16 socket or hex driver bit, so a cordless impact driver with a 5/16 magnetic socket is the normal way to set these. The washer face spreads the bearing load on the fixture, so no separate washer is required.

Yes, a concrete screw backs out with the same 5/16 driver, which is why electricians favour them for temporary supports and fixture swaps. The hole threads will be worn, so if you reset in the same hole, use a fresh screw and expect reduced hold; a new hole is better where the fastening matters.