Stainless 1/2-13 x 1 Hex Head Bolts (3/4 To 5" Lengths Available in Listing), 304 Stainless Steel, 25 pieces (1/2-13 x 1) 304 Series Stainless Steel, (18-8) Tensile - 100,000 psi to 125,000 psi, Hardness - 85 Rockwell B 1/2-13 USS Coarse Thread Great corrosion resistance for outside applications 25 Pieces