Professional-grade 19-21mm metric flare nut wrench with Flank Drive technology and Tools@Height tethering system for safe, high-performance fastening in elevated work environments.
The Tools@Height 19-21mm 6-Point Metric Flank Drive Double End Flare Nut Wrench (Model THRXFMS1921B) is a premium professional-grade wrench engineered for demanding industrial applications including aviation, aerospace, military, defense, oil and gas, power generation, railroads, and heavy-duty fleet maintenance. This innovative wrench features Snap-on's proprietary Tools@Height tethering system, which securely attaches each tool with its own lanyard to minimize exchanges and significantly reduce the risk of costly drops in elevated work environments.
Manufactured from special alloy steel and heat-treated for optimum strength and durability, this wrench delivers exceptional performance and reliability. The 6-point box end features the proven Flank Drive wrenching configuration that grips fastener flats and provides up to 15-20% more turning power compared to traditional designs. The polished stainless steel construction offers superior flexibility and shock-absorbing qualities, while the continuous arc design distributes stress over the entire wrench opening radius for maximum strength and longevity.
The wrench measures 223mm in length with a 32-34mm outside diameter and 12-13mm head depth, weighing only 0.555 lbs (0.25 kg) for optimal comfort and balance. The engineered attachment points are strategically positioned to not interfere with tool functionality, and the lanyard slides out of the way along the handle to provide full use and achieve greatest leverage. Protected by tough, durable nickel-chrome plating that produces a mirror-like finish, this wrench resists corrosion and wipes clean effortlessly, making it an essential tool for professional technicians and maintenance crews.
Key Features
- Snap-on Tools@Height tethering system with individual lanyard minimizes tool exchanges and prevents costly drops
- 6-Point Flank Drive configuration provides up to 15-20% more turning power than traditional designs
- Double-end design with 19-21mm metric sizing for versatile fastener applications
- Polished stainless steel construction with superior flexibility and shock-absorbing qualities
- Continuous arc design distributes stress over entire wrench opening radius for maximum strength
- Nickel-chrome plating provides corrosion resistance and mirror-like finish for easy cleaning
- Engineered attachment points do not interfere with tool functionality or handle leverage
- Special alloy steel construction heat-treated for optimum strength and durability
- Optimally sized at 223mm length for comfort and balance during extended use
- No welds to fail - superior design ensures long-term reliability
Technical Specifications
| Specification |
Value |
| Product Model | THRXFMS1921B |
| Size Range | 19-21 mm Metric |
| Wrench Type | Double End Flare Nut Wrench |
| Point Configuration | 6-Point |
| Drive System | Flank Drive |
| Total Length | 223 mm |
| Outside Diameter | 32-34 mm |
| Head Depth | 12-13 mm |
| Weight | 0.555 lbs (0.25 kg) |
| Material | Special Alloy Steel |
| Finish | Nickel-Chrome Plated |
| Treatment | Heat-Treated for Optimum Strength |
| Tethering System | Snap-on Tools@Height with Individual Lanyard |
| Design Feature | Continuous Arc Design with No Welds |
| Performance Advantage | 15-20% More Turning Power vs. Traditional Designs |
| List Price | $101.00 |
| Stock Status | Backorder - Estimated 05/09/2026 |
