Ripple Coulter Blades

For Allis Chalmers

Size	Center Hole	Bolt Holes	Bolt Circle	Gauge	Part Number	Weight (lbs)
20″	1-13/16″	six 13/32″	3-1/4″	7	20450AC	14.3

For BlueJet, DMI, Marliss, Melroe, Progressive, Sunflower, Thurston, Tye, UFT(new), Wilrich

Size	Center Hole	Bolt Holes	Bolt Circle	Gauge	Part Number	Weight (lbs)
17″	3-11/16″	four 17/32″	5″	8	17400DMI	8.9
20″	3-11/16″	four 17/32″	5″	7	20450DMI	14.3
20″	3-11/16″	four 17/32″	5″	7	2045PDMI*	14.3
20″	3-11/16″	four 17/32″	5″	7	20500DMI*	14.3
20″	3-11/16″	four 17/32″	5″	6	20450BJ**	23.8
24″	3-11/16″	four 17/32″	5″	6	24500DMI*	23.8

* flat, ** straight edge

For Case (prior to White)

Size	Center Hole	Bolt Holes	Bolt Circle	Gauge	Part Number	Weight (lbs)
20″	3-3/4″	six 13/32″	5″	7	20450CASE	14.3

For Deere (5-Hole)

Size	Center Hole	Bolt Holes	Bolt Circle	Gauge	Part Number	Weight (lbs)
20″	2-1/8″	five 17/32 “	4-3/4″	7	20450JDM	14.3

For Deere (6-Hole)

Size	Center Hole	Bolt Holes	Bolt Circle	Gauge	Part Number	Weight (lbs)
17″	2″	six 13/32″	3-1/2″	8	17400JDNU	8.9
20″	2″	six 13/32″	3-1/2″	7	20450JDNU	14.3

For Ford, Great Plains, Kinze, Krause, New Holland, White, Yetter

Size	Center Hole	Bolt Holes	Bolt Circle	Gauge	Part Number	Weight (lbs)
16″	4″	four 17/32″	5-1/4″	8	16400WFE	8.0
17″	4″	four 17/32″	5-1/4″	8	17400WFE	8.9
20″	4″	four 17/32″	5-1/4″	7	20450WFE	14.3
20″	4″	four 17/32″	5-1/4″	7	2045PWFE*	14.3
20″	4″	four 17/32″	5-1/4″	7	20450WFES**	14.3

* flat, ** straight edge

For International Harvester (w/ rectangular center hole)

Size	Center Hole	Bolt Holes	Bolt Circle	Gauge	Part Number	Weight (lbs)
20″	rectangle	six 11/32″	3-1/4″	7	20450IHC	14.3

For Massey Ferguson

Size	Center Hole	Bolt Holes	Bolt Circle	Gauge	Part Number	Weight (lbs)
20″	3-1/4″	four 15/32″	4-3/4″	7	20450MF	14.3

For Orthman

Size	Center Hole	Bolt Holes	Bolt Circle	Gauge	Part Number	Weight (lbs)
20″	2-3/4″	four 13/32″	4-1/4″	7	20450OR	14.3

For UFT (old)

Size	Center Hole	Bolt Holes	Bolt Circle	Gauge	Part Number	Weight (lbs)
17″	2-1/2″	four 17/32″	4″	8	17400UFT	8.9