Toro 139-1731 Hwh Thread Rolling Screw

Product Description

The TORO 139-1731 is a hex washer head (HWH) thread rolling screw used in Toro lawn and garden equipment. Thread rolling screws form threads as they are driven, creating strong, vibration-resistant fastened joints without requiring a pre-tapped hole. This screw is a small but critical hardware component used in the assembly and repair of Toro outdoor power equipment. Service technicians and equipment repair professionals install this type of fastener during routine maintenance and component replacement work.

This screw is used in Toro lawn and garden equipment assemblies where a self-threading fastener with a hex washer head drive style is required. The hex washer head provides a wide bearing surface and allows for installation with standard hex drive tools. It is suited for sheet metal, plastic housing, and light structural applications common in outdoor power equipment.

Key Features

• Hex washer head (HWH) design provides wide bearing surface and secure seating
• Thread rolling design forms mating threads on installation, eliminating the need for a pre-tapped hole
• Vibration-resistant joint created by rolled thread engagement
• OEM Toro part for accurate fit and function in Toro equipment

Compatibility

Designed as an OEM replacement fastener for Toro lawn and garden equipment. Refer to the Toro parts manual for your specific model to confirm fitment before ordering.

Installation Notes

Installation is typically performed by equipment service technicians using a standard hex drive or socket tool matched to the fastener head size. Power down and disconnect the ignition system before servicing any equipment assembly. Do not overtighten thread rolling screws into plastic or thin-gauge material, as this can strip the formed threads. Follow the equipment manufacturer service documentation for proper assembly sequence.

Technical Specifications

• Head Style: Hex Washer Head (HWH)
• Type: Thread Rolling Screw

Standard Information

• Brand: TORO
• Manufacturer Part Number: 139-1731