Online Parts Store › Phillips Machine Screw - Pan Head. 1/4"-20 x 3-1/2" Image 1 of 1 Phillips Machine Screw - Pan Head. 1/4"-20 x 3-1/2" $46.42 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Nylon Insert Locknut - Stainless 3/8-16 $28.40 Phillips Tapping Screw - Pan Head, #8 x 1-1/4" $27.71 Phillips Tapping Screw - Pan Head, #8 x 1-1/2" $25.70 Stainless Fender Washer 1/4", .062" Thick ,OD 1" $39.24 Stainless Fender Washer 1/4", .062" Thick1/4", OD1-1/4" $59.33