New Old Stock Disk Plow Blade for John Deere Disk Plows.

The disk blade is 26" inches in diameter.

There are 5 mounting holes.

The center pilot hole is 13/16" inch.

Concavity is 4" inches.

The mounting holes are 6-3/4" inch apart.

The measurement is from side to side mounting holes, from center of hole to center of hole.

Please measure your disk plow blade before ordering.

Aftermarket disk plow blade part number 4257.

Disc plows are also referred to as turning plows, disk plows, and disc ploughs depending on area of country or equipment manufacturer.

Tillage parts labeled as "New Old Stock" are from various manufacturers. These items will fit and function correctly but vary in color or slightly in shape due each manufacturer's unique pattern. They could be from the original equipment manufacturer or any number of aftermarket suppliers such as Weise, Adams, Osmundson, Crescent Forge, Veldmaster, Star, S&J Kitchin, Hamburg Plow, King Plow, C.F.C., Herschel, and others.  Some of these parts have been out of production for many decades. The brand of tillage parts will vary as inventory is acquired.   There may be some surface rust due to long term prior storage.