Williams Comfort Products 401NSM Torque Screwdriver

Product Description

The WILLIAMS COMFORT PRODUCTS 401NSM is a micro-adjustable torque screwdriver with a 1/4 inch drive and a torque range of 50 to 450 inch-pounds. It is designed for precise fastener torquing in applications where consistent, repeatable torque values are critical. The micro-adjustable mechanism allows technicians to dial in exact settings without over- or under-torquing hardware. This tool is suited for HVAC, electrical, and mechanical service work where manufacturer torque specifications must be met. It ships as a single unit and weighs 0.798 pounds.

The 401NSM is appropriate for residential and light commercial service environments where technicians need a compact, reliable torque screwdriver for panel fasteners, equipment access covers, motor mounting hardware, and similar fastening tasks. Its 1/4 inch drive accepts standard screwdriver bits, making it compatible with the bit sets already common in most service kits. HVAC technicians, electricians, and general mechanical service pros will find this tool fits naturally into existing workflows.

Key Features

• Micro-adjustable torque setting across the full 50 to 450 inch-pound range
• 1/4 inch drive accepts standard service bits
• Lightweight design at 0.798 pounds for all-day carry
• Sold individually as a single unit
• Repeatable torque output for consistent fastener loading

Compatibility

Designed as a general-purpose torque screwdriver compatible with standard 1/4 inch drive screwdriver bits used across HVAC, electrical, and mechanical service applications.

Installation Notes

Set the desired torque value before beginning fastener work and verify the adjustment is locked in per the tool manufacturer instructions. Always power down or de-energize equipment before servicing fasteners on electrical enclosures or HVAC components. Do not use this tool to apply torque values outside the 50 to 450 inch-pound range, as readings will not be accurate at the extremes beyond the rated scale. Consult applicable NEC or equipment manufacturer guidelines for required torque values on electrical connections.

Technical Specifications

• Drive Size: 1/4 inch
• Torque Range: 50 to 450 inch-pounds
• Adjustment Type: Micro-adjustable
• Weight: 0.798 pounds
• UPC: 662459905130
• Sold As: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: 401NSM