Online Parts Store › Nylon Insert Locknut - Stainless M8-1.25 Image 1 of 1 Nylon Insert Locknut - Stainless M8-1.25 $21.16 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screw - Pan Head, #10 x 1-1/4" $32.56 Phillips Tapping Screw - Pan Head, #10 x 3" $37.54 Phillips Tapping Screw - Truss Head #10 x 3/4" $31.18 Phillips Tapping Screw - Truss Head #8 x 1" $30.99 Phillips Tapping Screws - Oval Head, #10 x 3/4" $23.24