Aftermarket GRACO® 100103 Cotter Pin (Non-OEM)

Manufacturer: Total Finishing Supplies

Part Number: 300309

Comparable OEM Part Number: 100103

Description: Total Finishing's part # 19-391 is a compatible replacement for Graco parts 100103 and 100-103, a cotter pin for Graco spray equipment. A cotter pin is the small split pin that locks a castle nut or clevis in place so vibration cannot back it off. Cotter pins are single-use hardware: once the legs have been spread and bent back straight, the pin should be replaced, not reused. Compatible with Graco 13:1 Senator (HydraCat), 20:1 Bulldog (HydraCat), 45:1 King (HydraCat), Double Wall Hopper Feed Pump, GH 733 (Hydra-Spray), Monark 5:1 and other Graco equipment.

Common reasons for replacement:

• Missing pin letting a nut or clevis work loose
• Pin discarded during teardown — they are single-use hardware
• Fatigued or cracked legs from repeated bending
• Corrosion after exposure to coatings and solvents

Manufactured to OEM-equivalent dimensions for proper fit and performance.

Comparable to GRACO® 100-103