Professional Snap-on dual-size 12-point ratcheting box wrench with spline technology for high-tensile fasteners. Chrome finish, military-spec compliant, ideal for aerospace, defense, and industrial applications.
The Snap-on 5/16–3/8" 12-Point SAE 0° Offset Ratcheting Box Wrench (Model R1012C) is a professional-grade dual-size wrench engineered for precision fastening applications. This innovative tool features Snap-on's advanced spline wrenching technology, which has been specifically developed to service high-tensile strength spline nuts and bolts with exceptional accuracy and reliability. The precise radial spline teeth engage the fastener teeth over a wider area, effectively minimizing stress concentration and allowing the application of high torque while reducing the risk of damage to both the fastener and the tool itself.
Crafted with a chrome finish for superior rust resistance, this ratcheting box wrench complies with Military Specification MS-33787 and MIL-W-8982, ensuring it meets the highest standards of quality and durability. The dual-end design provides versatility for various fastening tasks, with one end sized at 5/16" and the other at 3/8", allowing technicians to work efficiently with multiple fastener sizes without carrying separate tools. The 12-point configuration provides enhanced engagement with fasteners compared to 6-point designs, offering better torque distribution and reduced risk of fastener rounding.
This professional wrench is ideal for aviation and aerospace applications, military and defense work, oil and gas operations, power generation facilities, railroad maintenance, and general industrial use. The 0° offset design ensures optimal accessibility and control in tight spaces, making it an essential addition to any professional tool collection. Whether you're working in heavy-duty fleet maintenance or precision industrial settings, this Snap-on ratcheting box wrench delivers the performance and reliability that professionals demand.
Key Features
- Dual-size design with 5/16" and 3/8" ends for enhanced versatility
- 12-point spline configuration for superior fastener engagement and torque distribution
- Advanced spline wrenching technology for high-tensile strength fasteners
- Chrome finish for exceptional rust resistance and durability
- Military specification compliant (MS-33787 and MIL-W-8982)
- 0° offset design for optimal accessibility in tight spaces
- Compatible with both spline nuts and ordinary 6 and 12-point fasteners
- Flank Drive® wrenching system advantage for reduced fastener damage
- Professional-grade construction for demanding industrial applications
- Wider engagement area minimizes stress and extends tool life
Technical Specifications
| Specification |
Value |
| Model Number | R1012C |
| Size Range | 5/16–3/8 inches |
| Point Style | 12-Point SAE |
| Offset Angle | 0 degrees |
| Outside Diameter (Dimension A) | 51/64–57/64 inches |
| Head Depth (Dimension C) | 3/8 inch |
| Overall Length (Dimension E) | 5-1/2 inches |
| Finish | Chrome |
| Material | Alloy Steel |
| Military Specification | MS-33787 and MIL-W-8982 |
| Wrench Type | Ratcheting Box Wrench |
| Handle Type | Standard Handle |
| Warranty | Lifetime Warranty |
| Application | High-tensile strength spline nuts and bolts |
