Spanner is a hand tool that provides the grip and mechanical push while applying torque to turn the required object or tighten the nuts and bolts. This tool is used primarily for plumbing processes, assembling furniture, bike/gas/pipe repairing, and loosening & tightening of nuts and bolts. Spanners come in various types: close, open, or adjustable.
Open End – It is a multi-purpose single-piece tool suitable for almost all types of fasteners. Open-end spanners can have both 1 head or 2 heads with the same or different sizes.
Double-end is mainly used to exchange electric tool accessories and mounting casters on furniture like desks, chairs or carts. Double-end spanners can be turned over to work with various nut flats while working in congested spaces.
Ring – The ring spanner has a looped end that can grip the rotary fastener tightly from all sides. This type of spanner is usually double ended and comes in metric or imperial measurements.
Ratcheting – It operates by allowing the open-ended head, flare or ring head to turn the fastener in uni-direction. This type of spanner can fasten the nut bolt system without removing or repositioning the tool.
Combination – It is basically used for offering the grip for mechanical uses like fastening the nuts and bolts. The spanner has 2 heads – an open-end and a ring of the same size. The tool has an offset angle between the plane ring and handle.
Adjustable – It is an open-ended spanner that can be used only from one end. The opening size is not fixed and can be varied as per the nut and bolt size.
Allen Key - It comes in either T shape or L shape structure and has a hexagonal end. Allen key spanners are thus suitable for turning hexagonal shaped screws and bolts.
Length – The longer the spanner, the more the tool can create the greater torque.
Profile – The tool's profile defines the stability of the connection between the spanner and nut.
Thickness and wideness of its head – Thicker and wider the head, the stronger will be the tool. It also provides better contact with the nut.
Material of spanner – The material of the spanner decides the quality of the tool. It is suggested to prefer the spanner made of titanium or steel with a high percentage of vanadium.
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