Double Coil Spring Washer | Helical Lock Washer HDG | Power Line Hardware

Q1: What is the advantage of a double coil spring washer over a standard single coil washer?

A: A double coil spring washer provides twice the spring travel (deflection) compared to a single coil washer. In utility pole applications, this extra travel is crucial. It allows the washer to maintain continuous clamping force and keep the nut tight even when the wooden pole or crossarm shrinks significantly due to weather and aging.

Q2: Should I use a flat washer with a double coil spring washer on a wood pole?

A: Yes, absolutely. The double coil spring washer should be placed directly under the nut, but you must place a large square flat washer between the double coil washer and the wood pole. The square flat washer distributes the load to prevent crushing the wood, while the double coil washer maintains the tension.

Q3: Does the Hot Dip Galvanizing process affect the spring temper of the washer?

A: If not done correctly, excessive heat can reduce spring tension. However, Yokelink double coil spring washers are manufactured and galvanized using strictly controlled thermal processes that protect the high-carbon steel's temper, ensuring they retain their full spring action while providing excellent corrosion resistance.