Professional Snap-on 1/2" drive spline torque adaptor for aerospace and military fasteners with 1,600 in-lb capacity and military spec compliance.
The Snap-on 1/2" Drive SAE #18, 9/16" Hex Spline Torque Adaptor (Model SRES18) is a professional-grade tool engineered for high-tensile strength spline nuts and bolts commonly used in military and commercial aircraft applications. This precision instrument features advanced spline wrenching technology that engages fastener teeth over a wider area, significantly minimizing stress concentration and enabling the safe application of high torque loads up to 1,600 in-lbs without risking damage to either the fastener or the tool itself.
Manufactured to comply with Military Specification MS-33787 and MIL-W-89823, this chrome-finished adaptor represents the pinnacle of aerospace maintenance tooling. The unique spline wrenching configuration provides exceptional versatility, allowing it to be effectively used on standard six and 12-point fasteners as well, offering performance advantages comparable to Snap-on's renowned Flank Drive® wrenching system. With its precisely engineered dimensions and robust construction, this tool is essential for aviation and aerospace professionals who demand reliability and precision.
The SRES18 adaptor features a 3-inch center-to-center length with a head diameter range of 0.818 to 1.04 inches, making it compatible with 1/2" drive torque wrench systems. Its chrome finish provides excellent corrosion resistance and durability in demanding industrial environments, while the precision-manufactured spline teeth ensure consistent, reliable engagement with fasteners across multiple applications in aviation, aerospace, military, and commercial industries.
Key Features
- Military specification compliant (MS-33787 and MIL-W-89823) for aerospace and defense applications
- Maximum recommended working torque of 1,600 in-lbs for high-tensile fasteners
- Precise radial spline teeth design minimizes stress and prevents fastener damage
- Versatile compatibility with six and 12-point fasteners using Flank Drive technology
- Chrome finish provides superior corrosion resistance and durability
Technical Specifications
| Specification |
Value |
| Model Number | SRES18 |
| Drive Size | 1/2 inch |
| Spline Size (SAE) | #18 (9/16 inch hex) |
| Maximum Recommended Working Torque | 1,600 in-lbs |
| Length (Center to Center) | 3 inches |
| Head Diameter (Spline and Square) | 0.818 to 1.04 inches |
| Head Depth (Spline and Square) | 13/32 to 1/2 inch |
| Hex Size | 9/16 inch |
| Finish | Chrome |
| Military Specification | MS-33787 and MIL-W-89823 compliant |
| Application | Aerospace, Military, Commercial Aircraft Fasteners |
| Tool Type | Spline Torque Adaptor |
