Galvanized Bolt On Spring Hanger 3 1/2″ X 9/16″ Utility Trailer Equalizer Bolt has been added to your order form. Checkout View Order Form $10.95 Bolts To Aluminum I Beam. Galvanized Bolt On Spring Hanger quantity Add To Order Form SKU: 2489 Categories: Double Eye, Hook, Slipper, Springs **Bolts To Aluminum I Beam. Hole Center Width 1 5/8" X Hole Center Length 4 3/8". 3/8" Hole** Related products Galvanized 4″ 2 Hole Strap $2.95 Part #:2357 2 1/2" Hole Centers. Add To Order Form 3″ X 9/16″ Utility Trailer Spring Bolt $3.95 Part #:1574 Spring Bolt For Utility Trailers. Add To Order Form 3 Leaf 30″ Slipper Spring $36.95 Part #:1620 Marine Coated. 1500lb Rated Per Spring. Click Here For Better Picture. Add To Order Form 3 1/2″ X 9/16″ Utility Trailer Equalizer Bolt $3.95 Part #:1577 Middle Bolt For Utility Trailer Equalizer. Add To Order Form