Spanner (Wrench)
A spanner (also called a wrench) is a hand tool used to tighten or loosen nuts and bolts. It is a very common tool used in mechanical work, plumbing, vehicle repair, and electrical installations.
Main Uses
Tightening nuts and bolts
Loosening rusted bolts
Assembling machines or equipment
Repairing vehicles and machinery
Common Types of Spanners
Open-End Spanner
Has open jaws on both ends.
Used to quickly turn nuts or bolts.
Ring Spanner
Has a closed ring that fits around the nut.
Gives strong grip and less slipping.
Combination Spanner
One end open, the other end ring.
Very common in tool kits.
Adjustable Spanner
Jaw size can be adjusted.
Useful for different bolt sizes.
Common Sizes
Spanners usually come in metric sizes, such as:
8 mm
10 mm
12 mm
14 mm
17 mm
19 mm