Part Number: 0513516-1 (Stringer) Part Number: 0513516-1S (Stringer undrilled) Part Number: 0513516-2 (Stringer) Part Number: 0513516-2S (Stringer undrilled) Part Number: 0513517-1 (Stiffener) Part Number: 0513517-2 (Stiffener) Part Number: 0513518-1 (Cessna 172 l/h instrument shock ) Part Number: 051-352-0000-910 (Allied only iaw 24127-0004 conne) Part Number: 0513520-12 (Skin) Part Number: 0513520-14 (Skin) Part Number: 0513520-15 (Structure ay fwd fuselage) Part Number: 0513520-16 (Filler) Part Number: 051352017 (Washer) Part Number: 0513520-18 (Skin)