3/8-16X1 Self Clinching Stud Full Thread Hardened Steel Heat Zinc Bake, Pkg of 500

3/8-16X1 Self Clinching Stud 12 Rib Full Thread 300 Series Stainless Steel. Concrete screws cut their own threads when used in concrete, block or brick. Carbide bits are recommended for use in masonry.

5/16-18X2 Self Clinching Stud Full Thread Hardened Steel Heat Zinc Bake. Concrete screws cut their own threads when used in concrete, block or brick. Carbide bits are recommended for use in masonry.

1/4-20X1 1/4 Self Clinching Stud Full Thread Hardened Steel Heat Zinc Bake. Concrete screws cut their own threads when used in concrete, block or brick. Carbide bits are recommended for use in masonry.

8X1 1/2 Phillips Modified Truss head Self Drilling Scew Full Thread Zinc Bake. Self drilling screws have point to cut through material and eleiminate the need to drill a pilot hole. Truss head screws are weaker than pan or round heads but preferred in applications where minimal clearance exists above the head. Modified truss heads offer low clearance and an extra large bearing surface. Commonly used to attach metal lathe to metal studs.