Klein Tools 647 Nut Driver Set 7 Piece Hollow Shaft

Product Description

The KLEIN TOOLS 647 is a 7-piece hollow-shaft nut driver set designed for general-purpose fastening work in electrical, HVAC, and mechanical trade applications. Each driver features a 6-inch shaft and a Cushion Grip handle that increases torque transfer and reduces hand fatigue during extended use. The hollow shaft design allows the drivers to seat fully over long bolts and threaded rod, a common requirement in panel work and equipment installation. This set covers the most frequently used nut driver sizes, making it a practical everyday carry for licensed electricians, HVAC technicians, and service professionals.

This set is suited for residential and light commercial service work where a range of common hex nut sizes is needed on a single job. The 6-inch shaft provides sufficient reach for most panel, conduit fitting, and equipment-mounting tasks. The Cushion Grip handles are appropriate for both hand-tightening and moderate torque applications. Electricians and HVAC techs will find this set covers the fastener sizes encountered most often during installation and service calls.

Key Features

• 7-piece set covers the most frequently used nut driver sizes
• Hollow shaft accommodates long bolts and threaded rod pass-through
• 6-inch shaft length provides reach for panel and equipment work
• Cushion Grip handles increase torque and reduce hand fatigue
• General-purpose selection suited for electrical and HVAC service

Compatibility

Designed as a general-purpose nut driver set for use across electrical, HVAC, and mechanical trade applications requiring standard hex nut sizes.

Installation Notes

No power source is required for use. Always select the correct driver size before applying torque to avoid rounding fasteners. Inspect handles and shafts for cracks or damage before each use. Follow NEC or applicable code requirements when working inside electrical enclosures or panels.

Technical Specifications

• Pieces: 7
• Shaft Length: 6 inches
• Shaft Type: Hollow
• Weight: 1.75 pounds

Standard Information

• Brand: KLEIN TOOLS
• Manufacturer Part Number: 647