Professional-grade 7/8–1-1/8" double-end flare nut wrench with Flank Drive® technology for 15–20% more turning power, heat-treated alloy steel construction, nickel-chrome plating, and ASME® certified quality.
The 7/8–1-1/8" 6-Point SAE Flank Drive® Double End Flare Nut Wrench (Model RXFS2836B) is a premium professional-grade tool manufactured by Snap-on, engineered for demanding automotive, aviation, and industrial applications. This double-end wrench features the innovative Flank Drive® system that grips the fastener flats with exceptional precision, delivering up to 15–20% more turning power compared to conventional wrenches. The continuous arc design distributes stress evenly across the entire wrench opening radius, ensuring superior strength and longevity even under extreme working conditions.
Crafted from special alloy steel and heat-treated to optimum specifications, this wrench delivers unmatched durability and reliability for professional technicians and maintenance teams. The 6-point design provides secure engagement with SAE fasteners, while the dual-end configuration offers two different sizes (7/8" and 1-1/8") in a single tool, maximizing efficiency and reducing tool bag clutter. The tough, durable nickel-chrome plating produces a mirror-like finish that not only enhances the tool's aesthetic appeal but also provides excellent corrosion resistance and makes cleaning effortless.
With an overall length of 10-1/2 inches and carefully sized for optimum comfort and balance, this wrench is ideal for technicians who require precision, power, and reliability. Whether working on hydraulic lines, brake systems, or fuel injection components, the RXFS2836B delivers professional-grade performance that meets ASME® B107.100 standards for quality and safety.
Key Features
- Flank Drive® system provides up to 15–20% more turning power than conventional wrenches
- 6-Point design ensures secure engagement with SAE fasteners
- Double-end configuration offers two sizes (7/8" and 1-1/8") in a single tool
- Continuous arc design distributes stress over the entire wrench opening radius for greater strength
- Nickel-chrome plating provides mirror-like finish and superior corrosion resistance
- Heat-treated special alloy steel construction for optimum strength and durability
- ASME® B107.100 certified for professional quality standards
- Ergonomically designed for comfort and balance during extended use
Technical Specifications
| Specification |
Value |
| Model Number | RXFS2836B |
| Size Range | 7/8–1-1/8 inches |
| Design | 6-Point SAE Double End Flare Nut Wrench |
| Overall Length | 10-1/2 inches |
| Outside Diameter (A-B) | 1-13/32–1-3/4 inches |
| Head Depth (C-D) | 9/16–11/16 inches |
| Material | Special alloy steel, heat-treated |
| Finish | Nickel-chrome plating |
| Style | Flank Drive® Double End |
| Standards | ASME® B107.100 |
| Turning Power Advantage | 15–20% more turning power vs. conventional wrenches |
| Application | Flare nut fasteners, hydraulic lines, brake systems, fuel injection |
