Opening Disc Blade for International 510, 5100, 620 and Other Model Grain Drills, IH603013 The lower bolt holes are

The lower bolt holes are 5 inches apart

Replaces Ford New Holland Fuse Holder part numbers: 7020480

New Lockout Nut for a Ford 8N and NAA Tractors

plastic seed plate part number C697-16

CASE -  300B (Early)

Opening Disc Blade for International 510, 5100, 620 and Other Model Grain Drills, IH603013 The lower bolt holes areNew Old Stock Opening Disc Blade for International Harvester or Case Grain Drill Models 10, 100, 224, 510, 5100, 5200, 620, 6200. Commonly used for IH and Case grain drills as double disc opener blades. Used also as a disc marker blade on some models of grain drills. Disc blade is 13 7 8" inches in diameter. The center hole is 1 3 8" inch. The 6 mounting holes are 1 5 16" inch apart (measuring side to side) (center of hole to center of hole).