Online Parts Store › Phillips Machine Screw - Pan Head. 1/4"-20 x 6" Image 1 of 1 Phillips Machine Screw - Pan Head. 1/4"-20 x 6" $31.90 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Stainless Cotter Pin 1/16" x 1" $17.13 Nylon Insert Locknut - Stainless 5/16-24 $46.35 Phillips Tapping Screws - Flat Head, #6 x 1-1/4" $15.93 Carriage Bolt, 1/2"-13 x 3" $92.78 Nylon Insert Locknut - Stainless 5/8-11 $35.08