Williams Comfort Products 401SP Torque Screwdriver 4-40 In-lb

Product Description

The WILLIAMS COMFORT PRODUCTS 401SP is a user-set torque screwdriver rated from 4 to 40 inch-pounds, designed for precision fastening applications in trade and mechanical service work. The driver features a cam-over torque limiting clutch that disengages automatically when the set torque value is reached, preventing overtorque on sensitive fasteners. A universal 1/4 inch hex bit holder with a rare earth magnet secures bits firmly during use. The ergonomic trilobular comfort grip reduces hand fatigue during extended service calls. Weighing 0.745 pounds, the tool is lightweight and easy to carry on the job.

The 401SP is suited for residential and light commercial service work where controlled fastener torque is required. Typical applications include electronic assembly, panel work, equipment servicing, and any task where consistent torque delivery protects components from damage. The user-set design allows the technician to dial in the desired torque setting on the job rather than relying on a factory preset. A factory pre-set variant is also available for shops that require a Certificate of Calibration tied to a specific torque value specified at the time of order.

Key Features

• Cam-over torque limiting clutch disengages at set torque to prevent overtorque
• User-set torque range of 4 to 40 inch-pounds
• Universal 1/4 inch hex bit holder with strong rare earth magnet
• Trilobular comfort grip for reduced hand fatigue
• Lightweight at 0.745 pounds for handheld portability
• Factory pre-set models available with Certificate of Calibration when torque setting is specified at time of order

Compatibility

Designed as a general-purpose user-set torque screwdriver compatible with standard 1/4 inch hex shank bits for use across trade and mechanical service applications requiring controlled torque output in the 4 to 40 inch-pound range.

Installation Notes

Set the desired torque value before beginning fastener installation. Power down or de-energize any equipment before servicing fasteners on electrical panels or control boards. Use only 1/4 inch hex shank bits rated for torque screwdriver use. Follow applicable equipment manufacturer torque specifications for each fastener application.

Technical Specifications

• Torque Range: 4-40 inch-pounds
• Bit Holder: 1/4 inch hex, universal
• Weight: 0.745 pounds
• UPC: 662459927002
• Unit of Measure: Each

Standard Information

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