4 Pack Trailer Spring Shackle Bolt 9/16" x 3", | with Grease Zerk Fitting & Lock Nut, Fits 1-3/4" Wide Leaf Spring Equalizer Hanger, Compatible with 3500-7000 lb Trailer Axle, Grade 5 Steel

Complete 4-Piece Kit​ – Includes 4 upgraded greasable wet bolts and 4 matching nuts, ideal for replacing worn shackle hardware on a single trailer axle or multiple applications.  Precision Fit​ – 9/16" diameter x 3" length, designed specifically for standard 1-3/4" wide double eye leaf springs used on 2000 lb to 7000 lb trailer axles.  Lubricatable design​ – Includes grease zerk fitting for easy lubrication, extending bolt life and reducing wear on hanger brackets.   Prevent rotatio – Special fluting on the head locks the bolt in place, stopping it from spinning and damaging the bracket.  Complete set – Each pack contains 4 shackle bolts with matching lock nuts, ready for installation on trailer leaf spring systems.   Upgraded Durability​ – Made from high-strength steel with enhanced corrosion resistance, deformation resistance, and wear resistance compared to standard bolts.  Durable structure​ – Made from hardened steel with zinc plating for corrosion resistance, built to handle heavy-duty trailer use.  Widely used: Strength higher than standard bolts; for marine trailers, multi-purpose trailers, campers, and equipment trailers.

• Complete 4-Piece Kit​ – Includes 4 upgraded greasable wet bolts and 4 matching nuts, ideal for replacing worn shackle hardware on a single trailer axle or multiple applications.
• Precision Fit​ – 9/16" diameter x 3" length, designed specifically for standard 1-3/4" wide double eye leaf springs used on 2000 lb to 7000 lb trailer axles.
• Lubricatable design​ – Includes grease zerk fitting for easy lubrication, extending bolt life and reducing wear on hanger brackets.
• Prevent rotatio – Special fluting on the head locks the bolt in place, stopping it from spinning and damaging the bracket.
• Complete set – Each pack contains 4 shackle bolts with matching lock nuts, ready for installation on trailer leaf spring systems.
• Upgraded Durability​ – Made from high-strength steel with enhanced corrosion resistance, deformation resistance, and wear resistance compared to standard bolts.
• Durable structure​ – Made from hardened steel with zinc plating for corrosion resistance, built to handle heavy-duty trailer use.
• Widely used: Strength higher than standard bolts; for marine trailers, multi-purpose trailers, campers, and equipment trailers.