NUTS SPECIAL BOLTS FOR INCH GARDENING MACHINES INCH THREAD RIDE-ON MOWER Lawn Mower LAWN MOWER 1. UNIVERSAL NUT: Code 170290 size: 5/16-24UNF 2. UNIVERSAL NUT: code 170291 size: 3/8 - 24 UNF 3. UNIVERSAL NUT: code 170292 size :1/2 - 13 UNF 4. MURRAY NUT: code 170293 size: 1/2 - 20 UNF 5. MURRAY NUT: code 170294 size: 9/16 - 18 UNF 6. AYP nut: code 170295 sizes: 9/16 - 18 UNF with flange 7. UNIVERSAL NUT: code 170296 size: 3/4 - 10 UNF 8. MTD NUT: Code 170297 Size: 5/8 - 18 UNF 9. MTD NUT: Code 170298 Size: 5/8 - 18 UNF with flange 10. UNIVERSAL NUT: code 170299 size: 5/8 - 11UNF