Williams Comfort Products TM-393RSD Square Drive

Product Description

The WILLIAMS COMFORT PRODUCTS TM-393RSD is a replacement square drive component designed to restore proper mechanical operation in compatible Williams heating units. Square drive parts transmit rotational force within the burner or valve assembly, and failure of this component typically results in loss of ignition sequencing or burner function. This replacement is an OEM-style part intended for installation by qualified HVAC technicians performing routine maintenance or field repairs. At 0.573 pounds, it is a compact, single-unit component suited for quick swap-out during a service call.

This square drive replacement is intended for use with the Williams TM-393 unit. It is applicable in residential and light commercial heating service scenarios where the TM-393 is installed, including wall furnace and direct-vent heater applications common in Williams product lines. Technicians performing preventive maintenance or responding to mechanical failure in TM-393 units will find this a direct-fit replacement that avoids the need for fabrication or adaptation.

Key Features

• Direct replacement square drive for the Williams TM-393 unit
• Compact single-unit component at 0.573 pounds
• OEM-style fitment for straightforward field replacement
• Sold individually for precise parts ordering

Compatibility

Designed as a replacement square drive component for the Williams TM-393 heating unit.

Installation Notes

Installation should be performed by a licensed HVAC technician. Before servicing, shut off gas supply and disconnect electrical power to the unit per local code requirements and the manufacturer service documentation. Refer to IFGC guidelines where applicable. Do not force or modify the square drive interface, as improper installation may damage the mating component or void serviceability.

Technical Specifications

• Weight: 0.573 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 1
• UPC: 662459261342

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: TM-393RSD