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We’ve got a disc blade for every application and soil type. Smooth-edged for loose dirt to deeply notched for heavy soil and thick residue; and everything in between. Our discs are also available in a range of concavities for different tilling characteristics. High-grade, hardened boron steel gives McKay blades the strength to persevere through extreme workloads, holding an effective edge through long miles in the field, and delivering consistent results.

20” Disc Blade (2025SBF-31)

20″ Disc Blade 0.25″ Thick 4 x 17/32” Bolts at 5.250” from center Custom Edge 10 Scallops 6.7” Flat Disc blades that get the job done. High-grade boron steel, expert…

20” Disc Blade (2014B-10)

20″ Disc Blade 3.5mm Thick 1.047Sq X 1.125” Round Axle 1A Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2017B-1)

20″ Disc Blade 4.5mm Thick 1.047” Round Axle 1A Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2018-29)

20″ Disc Blade 5.0mm Thick .797” Round Axle 1A Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2018-22RR)

20″ Disc Blade 5.0mm Thick 1.172” & 1.297” Square Axle 1A Rerollable Boron Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2025-14HBT)

20″ Disc Blade 20″ 0.25″ Thick 2.057” Round Axle 1A Hbt Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2014-56)

20″ Disc Blade 3.5mm Thick 1.047” & 1.172” Square Axle 1A Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2017-15)

20″ Disc Blade 4.5mm Thick 1.047” & 1.172” Square Axle 1A Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2018S-16)

20″ Disc Blade 5.0mm Thick .797” Round Axle 1A 10Scallops Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2018F-22)

20″ Disc Blade 5.0mm Thick 1.172” Square Axle 1A Flat Back 5″ Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2025R-2HBT)

20″ Disc Blade 0.25″ Thick 1.172” Square Axle 1A Raised Flat 5″ Hbt Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2012S-13)

20″ Disc Blade 3.0mm Thick .797” Round Axle 1A 10Scallops Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2014S-65)

20″ Disc Blade 3.5mm Thick 1.047” & 1.172” Square Axle 1A 10Scallops Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2017S-12)

20″ Disc Blade 4.5mm Thick 1.047” & 1.172” Square Axle 1A 10Scallops Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2018-31)

20″ Disc Blade 5.0mm Thick .922Sq X 1.047” Round Axle 1A Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2018-28)

20″ Disc Blade 5.0mm Thick 1.547” Round Axle 1A Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2025-28X)

20″ Disc Blade 0.25″ Thick 1.297″ ” Round Axle No Edge Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2012S-16)

20″ Disc Blade 3.0mm Thick .922Sq X 1.047” Round Axle 1A 10Scallops Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2014-39)

20″ Disc Blade 3.5mm Thick 1.172” Square Axle 1A Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.

20” Disc Blade (2017-22)

20″ Disc Blade 4.5mm Thick 1.109” Square Axle 1A Disc blades that get the job done. High-grade boron steel, expert craftsmanship, and dependable tilling performance.