Online Parts Store › Nylon Insert Locknut - Stainless M12-1.75 Image 1 of 1 Nylon Insert Locknut - Stainless M12-1.75 $32.69 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Square Tapping Screw - Flat Head,#10 x 2" $31.61 Square Tapping Screw - Oval Head #10 x 1-1/4" $57.05 Phillips Tapping Screw - Pan Head, #10 x 3/4" $32.06 Phillips Tapping Screw - Pan Head, #10 x 1-1/2" $36.40 Stainless Fender Washer #10, .062" Thick, OD 1" $48.06