S - 440   - 2 ZI     |   |   | |     Type   Thread Size   Shank Code Plating Designation (ZI on steel   nuts, none on stainlessand aluminum nuts)     CLA – Nuts, Aluminum     CLS, CLSS – Nuts,   Stainless Steel     H – Nuts, Steel, Non   Locking     HN – Nuts. Steel, Non   Locking     S, SS – Nuts,   Steel     SMPP, SMPS – Nuts For   Thin Sheets,Stainless     SP – Nuts, Stainless   Steel For Use In Stainless Sheets

Provides standard profile load bearing   internal threads in sheets as thin as .025″ / 0.64 mm.