Prime Line Products H 3531 Casement Window Crank Handle

Product Description

The PRIME LINE PRODUCTS H 3531 is a casement window operator crank handle finished in silver. It is designed for use with casement window operators that accept a 5/16-inch spline drive. The handle delivers solid torque transfer and smooth operation, making it a reliable replacement for worn or broken crank handles on residential and light commercial casement windows. Installation is straightforward and is typically handled by glaziers, window service technicians, or experienced maintenance professionals.

This crank handle is suited for casement window applications where the operator requires a 5/16-inch spline interface. It works in residential settings where casement windows are opened and closed by a hand-cranked operator mechanism. The silver finish blends with standard window hardware finishes commonly found in homes and light commercial buildings. Units are packaged and carded, making them suitable for counter retail or direct supply house distribution.

Key Features

• 5/16-inch spline drive for positive engagement with casement window operators
• Silver finish matches common window hardware aesthetics
• Designed for smooth torque transfer and ease of operation
• Carded packaging suitable for point-of-sale or trade supply use
• Sold in packages of 6 units per package quantity

Compatibility

Designed as an OEM-style replacement crank handle for casement window operators that use a 5/16-inch spline drive interface.

Installation Notes

Installation is performed by removing the existing crank handle from the operator shaft, aligning the 5/16-inch spline of the replacement handle to the operator, and seating it firmly. No special tools are typically required beyond basic hand tools. Ensure the window sash is closed and the operator is in a neutral position before swapping the handle to avoid unintended movement.