The slots are for the insertion of a cotter pin to secure the nut when used with a drilled shank fastener

we pride ourselves on offering a vast selection of all the fasteners anyone could need for a project — including hard-to-find fastening solutions

000 psi for Hot-Dip Galvanized nuts

1 1/2-6 x 16 Socket Cap Screw Alloy

you may need toggle bolts for a specific purpose or just to have on hand as needed

9/16-12 x 3 Hex Cap Screw SS 18-8 (A2) 3/8 Hex Lag Screws 18-8 Stainless Steel The slots are for the9 16 12 x 3 Hex Cap Screw SS 18 8 (A2) . 18 8 stainless steel hex cap screws will have a typical composition of 18% chromium and 8% nickel. These percentages exist in 303, 304 and 305 series stainless steels so 18 8 is used at times to designate any and all of those alloy groups. 18 8 stainless steel offers good corrosion resistance and machines easily but will over time stain in coastal environments. They are also acceptable for use in ACQ pressure