Heavy Duty Trailer Shackle Bolts With Grease Zerks And Lock Nuts 9/16 X 3 1/2 Inches 4 Pack For Leaf Spring Suspension Fixes To Get Your Rig Back On The Road

Heavy Duty Shackle Bolts For Trailer Leaf Springs 4 Pack
✔️ 9/16by3.5 trailer shackle bolts with grease fittings lock nuts

This four piece hardware kit replaces worn out fasteners on your trailers and trucks that carry heavy loads. You will install these shackle bolts inside rear suspension frames to secure leaf springs against frame hangers and spring sliders during daily hauling or off road trailering runs.

✅ 9/16 18 UNS threaded shaft measures 3 1/2 inches overall length
✅ Integrated grease zerk fitting allows direct lubrication without disassembly
✅ Knurled fluted head design keeps bolts from spinning while torquing down
✅ Includes matching heavy grade lock washers for vibration resistance

💡 Why choose specialized shackle bolts for leaf spring suspension upgrades?
These handy fasteners simplify roadside repairs by combining mounting strength with routine maintenance access.
- Anti rotation head grooves grip bracket holes tightly so you stop wasting hours wrestling stuck hardware
- Embedded grease zerk ports let you pump fresh lubricant straight to moving pivot points quickly
- Matched thread pitch handles constant load bouncing without backing loose after tough weekend trips

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