06200321 – Gravely Bolt, RHSN .50-13 × 8.50, Grade 5 (ZCC) The Gravely 06200321 Bolt is a right-hand standard hex bolt with 1/2-13 threads and an 8.50-inch length, manufactured to Grade 5 specifications and finished with zinc clear chromate (ZCC) for corrosion resistance. This bolt is commonly used in anti-scalp wheel, mower deck baffle, and front caster wheel assemblies on Gravely commercial zero-turn mowers. Designed for strength and durability, this fastener provides secure mounting in high-load deck and wheel applications. Product Details Genuine Gravely part Part Number: 06200321 Hex bolt (RHSN) Thread size: 1/2-13 Length: 8.50″ Grade: 5 Finish: Zinc Clear Chromate (ZCC) Where Used (Common Applications) Anti-Scalp Wheels & Deck Baffles ZT HD series (44″, 48″, 52″, 60″ decks) Pro-Turn Z, ZX, EFI, and 252 / 260 / 272 series Front Caster Wheels Pro-Turn Z and Pro-Turn ZX models (48″, 52″, 60″) Used across multiple serial number ranges on Gravely ZT HD and Pro-Turn commercial zero-turn mowers. (Always verify model, deck size, and serial number for correct fitment.)