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The PRIME LINE PRODUCTS H 3956 is a diecast copperite replacement crank handle for casement window operators. It is engineered to fit the Pella special deep spline spindle and features a 3/8 inch bore. This handle is a direct OEM-style replacement used when an existing crank handle is stripped, broken, or worn. Window service technicians and skilled trade professionals install this part as a straightforward component swap on compatible Pella casement window operator assemblies. The diecast copperite construction provides durable, corrosion-resistant performance in the window opening mechanism.
This crank handle is designed specifically for Pella casement window operators that use the special deep spline spindle configuration. It is suited for residential window service applications where the original handle has failed or is missing. The 3/8 inch bore and deep spline fitment distinguish this handle from standard casement crank handles, making it important to confirm the spindle type before ordering. It is sold as an individual unit and is a common replacement part in residential window maintenance and renovation work.
Designed as a replacement crank handle for Pella casement window operators equipped with the special deep spline spindle. Confirm spindle type and bore size before installation to ensure proper fitment.
Installation is typically performed by a window service technician or experienced tradesperson. Before servicing, ensure the window sash is in the closed position and the operator mechanism is not under load. Remove the existing crank handle by disengaging any retaining hardware, then seat the H 3956 firmly onto the deep spline spindle until fully engaged. Follow applicable local building codes and manufacturer guidelines when servicing window hardware in occupied structures.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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