Professional 3/8" drive crowfoot wrench with Flank Drive® system offering 15-20% more turning power, 6-point design, nickel-chrome finish, and thin wall construction for superior access and corrosion resistance.
The Tools@Height 3/8" Drive 6-Point 11/16" Flank Drive® Flare Nut Crowfoot Wrench (Model THFRH220S) is a professional-grade precision tool engineered for demanding applications in aerospace, automotive, and industrial maintenance. This crowfoot wrench features the proprietary Flank Drive® system that grips fastener flats with superior precision, delivering 15-20% more turning power compared to conventional designs. The advanced 6-point box end configuration ensures optimal contact with fasteners while minimizing the risk of rounding or stripping.
Designed with a thin wall construction, this wrench provides exceptional access around obstacles and tight spaces, making it ideal for working on power steering lines, expansion valves, A/C lines, hydraulic lines, and fuel filter lines in both automotive and industrial equipment. The nickel-chrome alloy finish provides outstanding rust and corrosion resistance, ensuring long-term durability in harsh environments. Manufactured from premium proprietary steel, this tool delivers optimum strength and reliability for professional technicians and maintenance crews.
The wrench features locking holes on all sides, not just one, which significantly reduces the risk of misalignment and ensures secure attachment to drive tools. With a maximum recommended working torque of 450 in-lb, this crowfoot wrench is engineered to handle demanding applications while maintaining precision and control. Perfect for aviation, aerospace, military, defense, oil and gas, power generation, railroad, and general industry applications.
Key Features
- Flank Drive® system provides 15-20% more turning power than conventional designs
- 6-point box end configuration for optimal fastener contact and precision
- Locking holes on all sides reduce misalignment risk
- Thin wall design for superior access around obstacles and tight spaces
- Nickel-chrome alloy finish resists rust and corrosion
- Premium proprietary steel construction for optimum strength and durability
- Maximum recommended working torque of 450 in-lb
- Ideal for power steering, A/C, hydraulic lines and industrial equipment
Technical Specifications
| Specification |
Value |
| Model Number | THFRH220S |
| Drive Size | 3/8 inch |
| Wrench Size | 11/16 inch |
| Point Configuration | 6-Point |
| Outside Diameter (Dimension A) | 1-5/16 inches |
| Wall Opening (Dimension B) | 1/2 inch |
| Center to Center (Dimension C) | 13/16 inch |
| Length (Dimension D) | 1-25/32 inches |
| Head Depth (Dimension E) | 1/2 inch |
| Weight | 0.15 lb (0.07 kg) |
| Maximum Recommended Working Torque | 450 in-lb |
| Material | Proprietary Steel with Nickel-Chrome Alloy Finish |
| Finish | Nickel-Chrome Alloy |
| Wrench Type | Flare Nut Crowfoot Wrench |
| Design Feature | Flank Drive® System |
