Professional-grade 1/2" drive torque adaptor with 12-point SAE configuration, 4,400 in-lb working torque, precision-forged alloy steel construction for aviation, aerospace, and industrial maintenance applications.
The Snap-on 1/2" Drive 12-Point SAE 1" Standard Torque Adaptor (Model SRDH321) is a precision-engineered tool designed for professional mechanics and technicians working in aviation, aerospace, and heavy-duty maintenance applications. Manufactured from special alloy steel and precision forged with heat treatment, this adaptor delivers exceptional strength and durability for demanding work environments. The 12-point double hex configuration allows the socket to engage single hex fasteners every 30° rather than every 60°, providing superior access in restricted and tight spaces where standard tools cannot reach.
This torque adaptor features a center-to-center length of 3 inches and is engineered with radius edges that resist damage and nicks during intensive use. With a working torque capacity of 4,400 in-lb, this tool is built to handle high-stress fastening applications reliably. The chrome finish provides excellent corrosion resistance and maintains a professional appearance. The larger construction ensures optimal strength for heavy-duty applications, making it an essential component in professional tool kits for aviation maintenance, aerospace work, and industrial fastening operations.
Designed to Snap-on's exacting standards, this torque adaptor integrates seamlessly with 1/2" drive tools and sockets, offering precision and reliability that professionals depend on. Whether you're working on aircraft maintenance, industrial equipment, or heavy fleet maintenance, this adaptor provides the precision engagement and durability needed for critical fastening tasks.
Key Features
- Manufactured from premium special alloy steel for superior strength and durability
- Precision forged and heat-treated construction for optimum performance in demanding applications
- 12-point double hex configuration enables socket engagement every 30° for superior access in restricted areas
- Radius edge design resists damage and nicks during intensive professional use
- 4,400 in-lb working torque capacity for high-stress fastening operations
- Chrome finish provides excellent corrosion resistance and professional appearance
- Center-to-center length of 3 inches for accurate torque calculations
- Compatible with 1/2" drive sockets and tools for seamless integration
Technical Specifications
| Specification |
Value |
| SKU | SRDH321 |
| Drive Size | 1/2 inch |
| Socket Style | 12-Point Double Hex |
| Size | 1 inch SAE |
| Head Diameter (Wrench End) | 1.458 inches |
| Head Depth (Wrench End) | 19/32 inch |
| Head Diameter (Square End) | 1.040 inches |
| Head Depth (Square End) | 19/32 inch |
| Center-to-Center Length | 3 inches |
| Working Torque | 4,400 in-lb |
| Material | Special Alloy Steel |
| Finish | Chrome |
| Construction | Precision Forged and Heat-Treated |
| Edge Design | Radius Edges for Damage Resistance |
| List Price | $63.25 |
