Professional-grade Snap-on offset box wrench with exclusive Flank Drive® technology, 15° offset design, chrome finish, and aerospace AS954E specification compliance for precision fastening applications.
The Snap-on 7/32–1/4" 12-Point SAE Flank Drive® High-Performance 15° Offset Box Wrench (Model XDH78A) is a professional-grade aerospace tool engineered for exceptional performance and durability. This premium wrench features an exclusive Flank Drive® configuration that prevents rounding of fastener corners, making it the proven design choice for turning aerospace fasteners. The box ends are offset at 15° to provide superior access to hard-to-reach fasteners in confined spaces, while the extended length offers additional leverage for demanding applications.
Meeting the rigorous AS954E aerospace specification standard, this wrench is specifically designed for high-strength applications and 12-point aerospace fasteners. The chrome finish provides excellent corrosion resistance and durability in harsh industrial environments. With a head depth of 13/64–15/64 inches and an outside diameter of 11/32–3/8 inches, this wrench delivers precision engineering for critical fastening applications. The 7-15/64 inch length ensures optimal control and access when working with delicate or precision components.
Snap-on's commitment to quality and innovation is evident in every aspect of this tool. Whether you're working in aviation and aerospace, military and defense, or general heavy-duty maintenance, this offset box wrench is an essential addition to any professional toolkit. The 12-point design accommodates a wider range of fastener types, while the high-performance construction ensures reliable operation even under extreme conditions.
Key Features
- Exclusive Flank Drive® configuration prevents rounding of fastener corners for superior grip
- 15° offset box ends provide exceptional access to hard-to-reach fasteners in confined spaces
- Extended length delivers additional leverage for demanding heavy-duty applications
- Meets AS954E aerospace specification for high-strength 12-point fastener applications
- Chrome finish offers excellent corrosion resistance and durability in harsh environments
- 12-point design accommodates wider range of fastener types and sizes
- Professional-grade construction engineered for aviation, aerospace, military and industrial use
Technical Specifications
| Specification |
Value |
| Product SKU | XDH78A |
| Size Range | 7/32–1/4 inches |
| Point Configuration | 12-Point SAE |
| Offset Angle | 15° |
| Outside Diameter (Dimension A) | 11/32–3/8 inches |
| Head Depth (Dimension C) | 13/64–15/64 inches |
| Overall Length (Dimension E) | 7-15/64 inches |
| Finish | Chrome |
| Aerospace Specification | AS954E |
| Style | High-Performance Offset Box Wrench |
| Application | Aerospace fasteners, 12-point fastening |
| Material | Forged alloy steel |
| Standards Compliance | AS954 Standard for high-strength aerospace tools |
| Warranty | Lifetime warranty on manufacturing defects |
