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Urrea 31819 Full Polish Metric Open-End Wrench (18x19mm)
The Urrea 31819 Metric Open-End Wrench is a precision hand tool engineered for accessibility in narrow work areas, making it well-suited for industrial, electrical, and fiber optic installation environments. Featuring 18mm and 19mm thin-profile openings, this tool provides reliable performance on obstructed nuts and pipe joints. It is manufactured from a high-quality molybdenum-vanadium steel alloy, subjected to controlled thermal treatment for exceptional durability.
This wrench integrates Urrea's patented UGS system on both open ends, which distributes applied torque across three points. This design significantly reduces stress on the fastener edges and is highly effective when engaging stripped or rounded nuts and bolts. Additionally, the 15° inclination angle reduces the recovery angle to 30° when used on 6-point bolts, improving operational efficiency in restricted spaces.
Key Engineering Features
- Dual Metric Openings: Precision-machined 18mm and 19mm ends with a thin profile for narrow-clearance access.
- Patented UGS System: Distributes force across three points to prevent fastener rounding and securely grip stripped edges.
- 15° Head Inclination: Enables a 30° recovery angle on standard 6-point fasteners when flipped, critical for tight clearances.
- Ergonomic & Anti-Corrosive: Oval handle design combined with a full-polish nickel-chrome plated finish to withstand harsh industrial conditions and prevent corrosion.
Technical Specifications
| Manufacturer Model | 31819 |
|---|---|
| Opening Sizes | 18 mm x 19 mm |
| Total Length | 8-7/8 inches |
| Material | Molybdenum-Vanadium Steel Alloy |
| Finish | Nickel-Chrome Plated (Full Polish) |
| Compliance Standard | ASME B107.100 |
Frequently Asked Questions
Q: How does the Urrea UGS system work on this open-end wrench?
A: The patented UGS system distributes the applied torque across three specific points of contact on the fastener rather than solely on the corners. This reduces stress on the edges and allows the wrench to effectively grip and turn nuts or bolts that have been stripped or rounded.
Q: What is the practical benefit of the 15° head inclination?
A: The 15-degree angle allows the wrench to be flipped over after each turn, effectively reducing the necessary recovery angle to 30 degrees when working with standard 6-point fasteners. This is especially beneficial in tight spaces where a full 60-degree swing is obstructed.