Overview
The Armstrong 2-3/8″ combination wrench is a classic industrial-grade tool designed for heavy-duty fastening applications across manufacturing, maintenance, and field service environments. This SAE-sized wrench combines an open end and 12-point box end in one versatile tool, making it an essential addition to any professional toolbox. The long pattern design and satin chrome finish deliver both durability and corrosion resistance for years of reliable service.
Key Features
- Dual-Function Design: Open end and 12-point box end for versatility across fastening tasks
- Radius Corner Box End: Engages fastener flats rather than corners, reducing stripping and rounding damage
- 15° Box-End Offset: Provides knuckle clearance on flat surfaces and helps navigate obstructions
- Reinforced Shank-to-Box Transition: Strengthened design area resists bending and improves tool life
- Satin Chrome Finish: Smooth, bright surface resists corrosion and oxidation
- Made in USA: Heavy-duty alloy steel construction built to industrial standards
Technical Specifications
- Wrench Size: 2-3/8 inch (SAE)
- Measurement System: Standard American (SAE)
- Pattern Length: Long pattern
- Box End Configuration: 12-point
- Box End Angle: 15° offset
- Material: High-alloy steel
- Finish: Satin chrome
- Standards Compliance: ASME B107.6-1994, US Federal Spec GGG-W-636E
- Manufacturer: Armstrong Tools
- Origin: United States
Typical Applications
- Industrial equipment assembly and maintenance
- Automotive and heavy-equipment service work
- Machinery maintenance and repair shops
- Field service and construction applications
- Professional maintenance tool kits
Compatibility & Replacements
Compatible With
- SAE metric fasteners (nuts, bolts, set screws)
- Industrial machinery and equipment maintenance systems
- Heavy-duty construction and assembly work
- Professional mechanic and technician tool sets
Replaces / Drop-In Replacement For
- Other standard 2-3/8″ SAE combination wrenches
- Worn or damaged wrenches in the same size
- Upgrade path from smaller or damaged Armstrong wrenches
Works With
- Socket sets and ratchets in the same size range
- Mixed wrench sets and tool organizers
- Metric and SAE fastening systems
- Standard hand-tool collections in industrial environments






