SIZE & COMPATIBILITY: Lonffery trailer leaf spring shackle bolts are sized 9/16"-18 x 3" with lock nuts, designed for 1-3/4" wide double eye springs. Standard leaf spring bolts for common trailer suspension replacements
GRADE 5 ALLOY STEEL STRENGTH: Made from Grade 5 alloy steel, these trailer leaf spring shackle bolts are built for strength and durability, providing reliable performance under heavy loads and constant road vibration
PRECISION 18 TPI THREADS: These leaf spring bolts feature 18 threads per inch (18 TPI) for tighter engagement and improved holding strength, helping reduce loosening caused by road vibration and trailer movement
COMPLETE 4PC HARDWARE KIT: Includes 4 trailer leaf spring shackle bolts and 4 all-metal lock nuts, providing a complete replacement solution with no extra hardware required for axle or suspension maintenance
FITS MULTIPLE TRAILER TYPES: Designed to fit trailers with 2,000–3,500 lb axles, these trailer leaf spring shackle bolts are ideal for utility trailers, boat trailers, and light-duty cargo trailers