Cdi 151SM Torque Screwdriver 3-15 In/lb 1/4 in Hex Drive

Product Description

The CDI 151SM is a preset-style torque screwdriver designed for controlled fastening applications requiring accuracy across a range of 3 to 15 inch-pounds of torque. It features a 1/4-inch hex drive and an overall length of 6.25 inches, making it compact enough for confined work areas. The limiting direction is counterclockwise, and the tool meets ASME B107.300-2010 and N.I.S.T. standards with a rated accuracy of plus or minus 6 percent. The tri-lobular handle provides a firm grip during use. Technicians in HVAC, electrical, and mechanical service work rely on this type of tool when fastener torque must stay within a defined spec to avoid damage to sensitive components.

This screwdriver is suited for light fastening tasks where low-torque control is critical, such as securing terminal screws, control board mounting hardware, and small-gauge fasteners found in HVAC equipment, electrical panels, and electronic enclosures. Its adjustable preset range and compact form factor make it practical for field service technicians who carry a standard hand-tool kit. The 1/4-inch hex drive accepts standard hex bits for versatile use across common fastener types encountered in residential and light commercial service work.

Key Features

• Torque range of 3 to 15 inch-pounds with adjustable preset setting
• Plus or minus 6 percent accuracy rating per ASME B107.300-2010 and N.I.S.T. standards
• 1/4-inch hex drive tip for compatibility with standard hex bit accessories
• Counterclockwise limiting direction for controlled loosening or left-hand fastener applications
• Tri-lobular handle design for improved grip and reduced hand fatigue
• Compact 6.25-inch overall length for use in tight spaces

Compatibility

Designed for use with standard 1/4-inch hex drive bits; suitable for light-duty torque fastening applications in HVAC, electrical, and general mechanical service work.

Installation Notes

This tool is used by HVAC technicians, electricians, and mechanical service professionals for torque-sensitive fastening tasks. Before servicing any equipment, power down or de-energize the system per applicable NEC or equipment manufacturer guidelines. Verify the preset torque value matches the fastener specification before use. Do not use this screwdriver for impact or heavy-duty fastening, as this may damage the torque mechanism and void calibration.