Grinding Wheel Flanges Manufacturer​
For Types 27 & 28 - Depressed Center Wheel

Steel
For 6" (152.400mm) through 9" (228.600mm) Depressed Center Wheels
Types 27 & 28
Includes 1 CP-59N Washer Nut

Part Number	Wheel Thickness: Inch (Metric)	Thread	Flange Outside Diameter: Inch (Metric)
59FP 59G 59H 59K 59FP-300 59G-300 59H-300 59K-300	.250" (6.350mm) .375" (9.525mm) .125" & .188" (3.175mm & 4.775mm) .500" (12.700mm) .250" (6.350mm) .375" (9.525mm) .125" & .188" (3.175mm & 4.775mm) .500" (12.700mm)	5/8"-11 UNC-2B 5/8"-11 UNC-2B 5/8"-11 UNC-2B 5/8"-11 UNC-2B 5/8"-11 UNC-2B 5/8"-11 UNC-2B 5/8"-11 UNC-2B 5/8"-11 UNC-2B	3.500" (88.900mm) 3.500" (88.900mm) 3.500" (88.900mm) 3.500" (88.900mm) 3.000" (76.200mm) 3.000" (76.200mm) 3.000" (76.200mm) 3.000" (76.200mm)

Special High Speed

Part Number	Wheel Thickness: Inch (Metric)	Thread	Flange Outside Diameter: Inch (Metric)
59E14 59F14 59H14 59E16 59F16 59H16 59F18	.125” (3.175mm) .250” (6.350mm) .125” & .188” (3.175mm & 4.775mm) .125” (3.175mm) .250” (6.350mm) .125” & .188” (3.175mm & 4.775mm) .250” (6.350mm)	7/8”-14 UNF-2B 7/8”-14 UNF-2B 7/8”-14 UNF-2B 3/4”-16 UNF-2B 3/4”-16 UNF-2B 3/4”-16 UNF-2B 5/8”-18 UNF-2B	3.500” (88.900mm) 3.500” (88.900mm) 3.500” (88.900mm) 3.500” (88.900mm) 3.500” (88.900mm) 3.500” (88.900mm) 3.500” (88.900mm)

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Zinc Die Cast
For 6" (152.400mm) through 9" (228.600mm) Depressed Center Wheels and Flap Discs

Part Number	Outside Diameter: Inch (Metric)	Neck Length: Inch (Metric)	For Wheel Thickness of: Inch (Metric)
90-320-375 90-320-465 90-320-Z39-M14 90-320-Z45-M14	3.200" (81.280mm) 3.200" (81.280mm) 3.200" (81.280mm) 3.200" (81.280mm)	.375" (9.525mm) .465" (11.811mm) .388" (9.8552mm) .450" (11.43mm)	.125" (3.175mm) .250" (6.350mm) .125" (3.175mm) .250" (6.350mm)
90-280-335 90-280-455	2.800" (71.120mm) 2.800" (71.120mm)	.335" (8.509mm) .455" (11.557mm)	.125" (3.175mm) .250" (6.350mm)

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