Prime Line Products H 3966 Swivel Crank Handle Casement

Product Description

The PRIME LINE PRODUCTS H 3966 is a swivel-style crank handle designed for older casement window operators. Built from zinc diecast with a stone-colored finish, it features a large bell base shaped to fit older-style operator cover profiles. The handle includes a 3/8-inch spline socket and provides 3-1/8 inches of projection and reach. A set screw is supplied to hold the handle securely in place once installed. This part is typically installed by glazing contractors, general contractors, or experienced DIYers performing window hardware service and replacement.

This crank handle is suited for residential casement window applications where the original operator hardware has worn or broken. It is specifically sized for older operator cover shapes, making it the correct fit for restoration or repair work on legacy casement window units. The stone finish blends with neutral window trim and frame colors common in older residential construction.

Key Features

• Swivel-style handle design for comfortable operation
• Zinc diecast construction for durability
• Stone-colored finish for a neutral, low-profile appearance
• Large bell base fits older-style casement operator cover shapes
• 3/8-inch spline socket for secure engagement with the operator shaft
• 3-1/8-inch projection and reach for clearance and ease of use
• Supplied set screw for firm, secure installation

Compatibility

Designed as a replacement crank handle for older Andersen brand casement window operators featuring the older-style operator cover shape.

Installation Notes

Window hardware replacement is typically performed by a glazing or general contractor, though experienced homeowners often complete this repair. Before removing the existing handle, ensure the window is closed and the operator is in a neutral position. Use the supplied set screw and an appropriate hex key to secure the handle to the spline shaft after seating it fully. Do not overtighten the set screw, as zinc diecast components can crack under excessive force.