Box Spanner
Description
A Box Spanner is a tubular hand tool used for tightening and loosening nuts and bolts, especially in deep or recessed positions. It is designed with hexagonal or bi-hexagonal openings at both ends, allowing it to fit securely over fasteners. Box spanners are commonly used in mechanical and fitting work where access is limited.
Uses
- Tightening and loosening nuts and bolts.
- Working in deep or recessed areas.
- Assembly and maintenance of machinery.
- Automobile and workshop applications.
- Used where standard spanners cannot reach.
Parts of Box Spanner
- Body: Tubular structure of the spanner.
- Hexagonal Ends: Fit onto nuts and bolts.
- Tommy Bar Holes: Used to insert a rod for turning.
- Tommy Bar: Provides leverage for rotation.
Material
- Drop-forged steel
- Chrome vanadium steel
- Hardened and tempered body
- Corrosion-resistant coating
Shape
A Box Spanner has a hollow cylindrical shape with hexagonal openings at both ends. It includes cross holes through which a tommy bar is inserted to apply torque for tightening or loosening fasteners.
Safety Precautions
- Use the correct size spanner for the fastener.
- Ensure proper fit before applying force.
- Do not apply excessive force.
- Use a proper tommy bar for turning.
- Keep the tool clean and free from oil.
Conclusion
The Box Spanner is an essential hand tool used for fastening operations in confined spaces. Its simple design and effective grip make it highly useful in mechanical and workshop applications.
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