







🔧 Elevate your toolkit game—because every detail counts.
The Klein Tools 631 Nut Driver Set features 7 hex nut sizes from 3/16" to 1/2" on durable 3-inch full hollow shafts, designed for long bolt access. Ergonomic cushion grip handles enhance torque and comfort, while color-coded ends speed up size identification. Built with alloy steel and internal flanges for twist resistance, this set is ANSI-compliant and engineered for professional-grade reliability.






| Manufacturer | Klein Tools | 
| Part number | 631 | 
| Item Weight | 670 g | 
| Product Dimensions | 22.86 x 20.32 x 5.08 cm; 670 g | 
| Item model number | 631 | 
| Size | Non-Magentic | 
| Color | Black/ Yellow | 
| Style | Non-Magentic | 
| Finish | Brushed | 
| Material | Alloy Steel | 
| Pattern | Tool | 
| Shape | Rectangular | 
| Item thickness | 1 Inches | 
| Power source type | corded-electric | 
| Item Package Quantity | 1 | 
| Head Style | Three-point, Hexagon | 
| Measurement System | Inch | 
| Specification met | ANSI | 
| Special Features | Ergonomic | 
| Specific uses | personal | 
| Included components | 630-3/16, 630-1/4, 630-5/16, 630-11/32, 630-3/8, 630-7/16, and 630-1/2. | 
| Batteries Included? | No | 
| Batteries Required? | No | 
Trustpilot
5 days ago
1 month ago