2008 Polaris Sportsman 500 EFI/X2/Touring/500 H.O. Service Manual, Page 16Get this manual
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GENERAL INFORMATION SAE Tap Drill Sizes
Tap Size 3x.50 3x.60 4x.70 4x.75 5x.80 5x.90 6x1.00 7x1.00 8x1.00 8x1.25 9x1.00 9x1.25 10x1.25 10x1.50 11x1.50 12x1.50 12x1.75 Drill Size #39 332 #30 18 #