Cdi 21SP Preset Torque Screwdriver 2 In-lb 1/4 in Hex

Product Description

The CDI 21SP is a preset torque screwdriver designed for controlled fastening applications requiring repeatable, low-torque output. It delivers a fixed maximum torque of 2.00 inch-pounds with a rated accuracy of plus or minus 6 percent, meeting ASME B107.300-2010 standards. The 1/4-inch female hex drive accepts standard hex bits, and the tri-lobular handle provides a secure grip during use. At 4.2 inches overall length and 0.32 pounds, this compact tool suits tight-clearance work. The aluminum body keeps weight low without sacrificing durability. It ships with a hex adjustment key and is intended for single-piece use without tethering provisions.

This screwdriver is suited for applications where fastener torque must be consistently controlled to a low, preset value. Typical installation scenarios include electronics assembly, instrumentation work, and light mechanical assembly in commercial or industrial settings. HVAC and refrigeration technicians may use preset torque drivers when fastening control board hardware, terminal block screws, or sheet-metal enclosure fasteners where overtorquing would damage threads or components. The short overall length makes it practical in restricted access panels and equipment bays.

Key Features

• Preset torque output of 2.00 inch-pounds — no field adjustment required
• Plus or minus 6 percent torque accuracy per ASME B107.300-2010
• 1/4-inch female hex drive accepts standard hex bit inserts
• Tri-lobular handle design for improved grip and torque transfer
• Aluminum body construction for a lightweight, corrosion-resistant tool
• Includes hex adjustment key; compact 4.2-inch overall length

Compatibility

Designed as a preset torque screwdriver compatible with standard 1/4-inch female hex drive bits for controlled low-torque fastening applications.

Installation Notes

This tool is used by technicians and mechanics performing fastener torque-critical assembly or service work. Always ensure the correct torque specification for the fastener being driven before selecting a preset driver. Do not attempt to override or defeat the preset clutch mechanism, as doing so will compromise torque accuracy and may void the ASME calibration rating. Store the tool in a protective case when not in use to preserve clutch calibration.