Many times we require to tighten or loosen nuts and bolts for opening or closing the parts of devices for various purposes such as repairing, modification and more. This is where spanners come in handy. A spanner is a tool made of hard metal or alloys such as steel which has a shaped jaw designed to tighten or loosen nuts and bolts. A spanner set contains spanners with different sizes of jaws to use on different nuts and bolts.
A universal wrench is a tool, pretty much like the spanner, but with movable jaws, to avoid using multiple different tools for different bolt sizes. It is used to loosen or tighten bolts and to hold grip over them. The space between the jaws can be changed by using the worm screw.
How to use
To use the spanner, find the correct size of spanner required for the specific bolt. Put the spanner’s jaw over the bolt, making sure that it fits well and is interlocked. Then, to fasten it, rotate the spanner clockwise, and to loosen it, rotate the spanner in counter clockwise direction.
To use a wrench effectively, loosen its jaws a bit by rotating the worm screw, put the wrench over the bolt, and then tighten the jaws to make them fit. Once fit, rotate the wrench in the clockwise direction for tightening it, and in the counter clockwise direction for loosening it.
Common applications
1. Tightening or loosening bolts.
Safety Measures to follow
● Do not use a bent or damaged spanner.
● Don’t apply excessive force as it might break the material on which the bolt is tied.
Important Links
How is a spanner manufactured (https://youtu.be/dliLEnDwNkU)
YouTube Video
