Online Parts Store › Nylon Insert Locknut - Stainless M6-1 Image 1 of 1 Nylon Insert Locknut - Stainless M6-1 $24.25 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Wood Screw - Flat Head, #8 x 1-1/2" $81.56 Phillips Wood Screw - Flat Head, #10 x 2" $44.47 Phillips Tapping Screws - Oval Head, #10 x 1-1/4" $28.85 Stainless Fender Washer 5/16", .078" Thick, OD 1-1/2 $54.04 Socket Set Screw 10-24 x 1/4" $22.63