Klein Tools Cushion-Grip Nut Driver — Model 646-3/16
The Klein Tools 646-3/16 is a 3/16 inch cushion-grip nut driver featuring a 6 inch hollow shaft. Part of Klein’s Tip-Ident series, this driver is designed for reaching nuts and bolts in hard-to-access locations. The hollow shaft allows the driver to slide over threaded rod or long bolts, while the cushion-grip handle provides comfort and torque control.
Key Features
- 3/16 inch nut driver tip
- 6 inch hollow shaft for deep or through-bolt applications
- Cushion-grip handle for comfort and torque
- Tip-Ident color coding for quick size identification
- Black handle
Specifications
- Tip Size: 3/16 in.
- Shaft Length: 6 in.
- Shaft Type: Hollow
- Handle: Cushion-Grip, Black
- Product Type: Nut Driver
- Brand/Line: Tip-Ident
- Manufacturer: Klein Tools
- Model: 646-3/16
- UPC: 09264465030
Applications
Used by electricians and contractors for driving 3/16 inch nuts and bolts in electrical panels, enclosures, and equipment. The hollow shaft is especially useful when fasteners are on threaded rod or extended studs.




