Professional-grade 1-1/4–1-5/16" SAE Flank Drive® box wrench with 10° offset, Snap-on Tools@Height tether system, polished stainless steel construction, and up to 15-20% more turning power for safe, efficient work at heights.
The Snap-on Tools@Height 1-1/4–1-5/16" 12-Point SAE Flank Drive® 10° Offset Box Wrench (Model THXB4042A) is a professional-grade precision tool engineered for demanding industrial applications. This double box wrench features the innovative Snap-on Tools@Height System, which tethers each tool with its own lanyard to minimize tool exchanges and significantly reduce the likelihood of dangerous drops from heights. The wrench is constructed from polished stainless steel with superior flexibility and shock-absorbing qualities, eliminating the need for welds that could fail under stress.
Designed with a 10° offset handle that extends from the box end, this wrench provides maximum knuckle clearance and enhanced access in confined spaces, allowing technicians to work efficiently in challenging environments. The Flank Drive® wrenching system on the box-end delivers up to 15-20% more turning power compared to conventional wrenches, while simultaneously reducing the risk of tool damage and fastener stripping. The wrench features a tough, durable nickel-chrome plating that produces a mirror-like finish, protecting against corrosion and making maintenance simple with easy cleaning.
With dimensions optimized for comfort and balance, this wrench is ideal for aviation & aerospace, military & defense, oil and gas, power generation, and heavy-duty fleet maintenance applications. The engineered attachment points are strategically positioned to not interfere with the tool's functionality, and the lanyard attachment slides out of the way along the wrench handle to provide full use and maximum leverage. Weighing 2.055 lbs (0.93 kg), this tool combines durability, safety, and performance in a single professional-grade instrument.
Key Features
- Snap-on Tools@Height tether system minimizes tool exchanges and reduces drop incidents
- Flank Drive® wrenching system provides up to 15-20% more turning power with less fastener damage
- 10° offset handle delivers maximum knuckle clearance and improved access in confined spaces
- Polished stainless steel construction with superior flexibility and shock-absorbing qualities
- Tough nickel-chrome plating produces mirror-like finish and protects against corrosion
- Engineered attachment points don't interfere with tool functionality
- Lanyard attachment slides out of way for full handle use and maximum leverage
- 12-point SAE design for precision fastener engagement
- Optimized dimensions for comfort and balance during extended use
- No welds to fail - superior design for durability and reliability
Technical Specifications
| Specification |
Value |
| Product Model | THXB4042A |
| Size Range | 1-1/4–1-5/16 inches |
| Point Design | 12-Point SAE |
| Drive System | Flank Drive® |
| Handle Offset | 10° |
| Wrench Type | Double Box Wrench |
| Material | Polished Stainless Steel with Nickel-Chrome Plating |
| Dimension A (Outside Diameter) | 1-3/4 to 1-27/32 inches |
| Dimension C (Head Depth) | 22/32 to 3/4 inches |
| Dimension E (Length) | 17-19/32 inches |
| Weight | 2.055 lb (0.93 kg) |
| Tether System | Snap-on Tools@Height with Lanyard Attachment |
| Finish | Mirror-like Nickel-Chrome Plating |
| Turning Power Advantage | Up to 15-20% more than conventional wrenches |
| Warranty | Snap-on Limited Lifetime Warranty |
