Professional 3/8" drive crowfoot wrench with 2-7/16" size, special alloy steel construction, locking holes on all sides, and maximum 1800 in-lb working torque for industrial maintenance applications.
The Tools@Height 3/8" Drive 2-7/16" Open End Crowfoot Wrench (Model THFC78) is a professional-grade precision tool engineered for demanding industrial applications. Manufactured from special alloy steel, this crowfoot wrench delivers exceptional strength and durability while maintaining a thin wall design for superior access around obstacles. The wrench features locking holes on all sides, not just one, which significantly reduces the risk of misalignment and ensures reliable engagement with socket drive systems.
This crowfoot wrench is engineered with continuous arc open ends that minimize jaw spread for constant contact with the fastener, delivering maximum turning power and minimal torque transmission loss. With a maximum recommended working torque of 1800 in-lb, this tool is suitable for heavy-duty maintenance and repair operations across aviation, aerospace, military, defense, oil and gas, power generation, railroads, and general industrial applications. The precision-crafted design ensures consistent performance and longevity in the most challenging work environments.
Weighing only 1.00 lb (0.45 kg) with dimensions of 3-3/4" length and 4-3/32" outside diameter, this tool offers portability without sacrificing strength. The 2-7/16" size specification makes it ideal for working with fasteners in confined spaces and hard-to-reach areas. As part of the Tools@Height collection, this crowfoot wrench represents Snap-on's commitment to quality, precision, and reliability in professional tool manufacturing.
Key Features
- Locking holes on all sides reduce risk of misalignment and ensure secure socket engagement
- Precision crafted from special alloy steel for superior strength and durability
- Continuous arc open ends minimize jaw spread for maximum turning power
- Thin wall design provides better access around obstacles in tight spaces
- Maximum recommended working torque of 1800 in-lb for heavy-duty applications
Technical Specifications
| Specification |
Value |
| Model Number | THFC78 |
| Drive Size | 3/8 inch |
| Wrench Size | 2-7/16 inches |
| Type | Open End Crowfoot Wrench |
| Material | Special Alloy Steel |
| Finish | Chrome |
| Length (Dimension D) | 3-3/4 inches |
| Outside Diameter (Dimension A) | 4-3/32 inches |
| Center to Center (Dimension C) | 2-1/4 inches |
| Head Depth (Dimension E) | 1/2 inch |
| Total Depth (Dimension F) | 45/64 inch |
| Weight | 1.00 lb (0.45 kg) |
| Maximum Recommended Working Torque | 1800 in-lb |
| Design Features | Locking holes on all sides, continuous arc open ends, thin wall design |
| Applications | Aviation, Aerospace, Military, Defense, Oil and Gas, Power Generation, Railroads, General Industry |
