Heavy Duty Extension.

Heavy Duty Extension Springs offer greater loads and/or longer lengths than our standard extension springs. Parts are made from Zinc Plated or Galvanized Carbon Steel.

Heavy Duty Group

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Part NumberOutside Diameter (in)Wire Diameter (in)Rate (lbs/in)Overall Length (in)Material
9021.3750.207071.487.000Machine Hook
9051.8750.243047.478.750Machine Hook
892C1.0000.10553.758.500Machine Hook
893C1.0000.10552.5012.000Machine Hook
305-S1.0000.135023.525.875Machine Hook
L32C1.2500.148013.008.000Machine Hook
501E1.0000.09101.877.750Machine Hook
502E0.7500.10558.979.000Machine Hook
Trampoline1.0000.12509.408.500Machine Hook