Stainless 1/4 x 2-1/2" Hex Lag Screw (1" To 5" Lengths Available in Listing), 18-8 Stainless Steel, 50 pieces (1/4 x 2-1/2") 300 Series Stainless Steel, (18-8) Tensile - 100,000 psi to 125,000 psi, Hardness - 85 Rockwell B 1/4 x 2-1/2" Hex Head Lag Screw (also know as lag bolt) Great corrosion resistance for outside applications 50 Pieces