Online Parts Store › Nylon Insert Locknut - Stainless M10-1.5 Image 1 of 1 Nylon Insert Locknut - Stainless M10-1.5 $22.42 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Lag Screw, 3/8 x 3" $41.46 Flat Washer, #6, .032" Thick, OD 3/8" $8.19 Stainless Countersunk Finishing Washer, #6 $13.10 Phillips Tapping Screw - Truss Head #8 x 3/4" $17.19 Phillips Tapping Screws - Flat Head, #6 x 5/8" $9.57