Difference between revisions of "Spanner"
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==Spanner types== | ==Spanner types== | ||
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===Open end=== | ===Open end=== | ||
| − | + | [[image:Open ended spanner 319-6.jpg|180px|right|Open ended spanner]] | |
| − | [[image:Open ended spanner 319-6.jpg| | ||
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===Ring=== | ===Ring=== | ||
| − | + | [[image:Ring spanner 319-7.jpg|thumb|Ring spanner]] | |
| − | [[image:Ring spanner 319- | ||
Not as prone to slipping off as open end, but usable in less situations. | Not as prone to slipping off as open end, but usable in less situations. | ||
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===Combination=== | ===Combination=== | ||
| − | + | [[image:Combination spanner 319-5.jpg|thumb|Combination spanner]] | |
| − | [[image:Combination spanner 319-5.jpg|thumb|Combination]] | ||
A combination spanner has 2 different types of driver on the one spanner. Most often these are open and ring, but other combinations are also available. | A combination spanner has 2 different types of driver on the one spanner. Most often these are open and ring, but other combinations are also available. | ||
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===Ratchet=== | ===Ratchet=== | ||
| − | + | A real boon where getting the spanner onto the [[nut]] is difficult, eg for some [[car]] work. | |
| − | A real boon where getting the spanner onto the nut is difficult, eg for some car work. | ||
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===Adjustables=== | ===Adjustables=== | ||
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Adjusable spanners are called [[wrench]]es. | Adjusable spanners are called [[wrench]]es. | ||
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===Self adjusting=== | ===Self adjusting=== | ||
| − | + | [[image:Self adj spanner 0082-3.jpg|250px|right|Self adjusting spanner]] | |
| − | [[image:Self adj spanner 0082-3.jpg| | ||
* One can handle a range of sizes | * One can handle a range of sizes | ||
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* Handy for odd sizes | * Handy for odd sizes | ||
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* Not as robust as fixed sizes, and more prone to slipping off in use. | * Not as robust as fixed sizes, and more prone to slipping off in use. | ||
| − | + | * Useful for portable [[tool]] kits | |
| − | * Useful for portable tool kits | ||
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===Box spanner=== | ===Box spanner=== | ||
| − | + | [[image:Box spanner 2508-2.jpg|180px|right|Box spanner]] | |
| − | [[image:Box spanner 2508-2.jpg| | ||
The forerunner of the socket set. Lighter, cheaper, weaker, and no longer very popular. | The forerunner of the socket set. Lighter, cheaper, weaker, and no longer very popular. | ||
| − | + | Their greater depth is sometimes useful for recessed fixings. So also is their relative thinness, when the recessed [[fixing]] is in a narrow hole. | |
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| − | Their greater depth is sometimes useful for recessed fixings. So also is their relative thinness, when the recessed fixing is in a narrow hole. | ||
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Their much lighter weight than sockets makes them useful in portable tool kits. | Their much lighter weight than sockets makes them useful in portable tool kits. | ||
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===Socket set=== | ===Socket set=== | ||
| − | + | [[image:Socket set 198-3.jpg|180px|right|3/4" Socket set]] | |
| − | [[image:Socket set 198-3.jpg| | ||
Cast steel sockets can apply much more torque and control than open ended spanners, but are more cumbersome and can't always be used. | Cast steel sockets can apply much more torque and control than open ended spanners, but are more cumbersome and can't always be used. | ||
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Extension bars enable clearing nearby obstacles. | Extension bars enable clearing nearby obstacles. | ||
| − | + | Torque wrenches enable setting [[bolt]]s or [[nut]]s to precise torque. A few different types exist. | |
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| − | Torque wrenches enable setting | ||
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Deep sockets can be used where bolt threads protrude, and on spark plugs. | Deep sockets can be used where bolt threads protrude, and on spark plugs. | ||
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====Size==== | ====Size==== | ||
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Sockets have a square hole in to drive them, and this can be any of several sizes: | Sockets have a square hole in to drive them, and this can be any of several sizes: | ||
| − | + | * 1/4" - for very light duty work eg [[appliance]] case [[screws ]] | |
| − | * 1/4" - for very light duty work eg appliance case screws | + | * 3/8" - light & medium duty. Can do a fair percentage of [[car]] work |
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| − | * 3/8" - light & medium duty. Can do a fair percentage of car work | ||
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* 1/2" - good for a lot of general purpose use, most popular for car work, but not big sizes or high torque jobs | * 1/2" - good for a lot of general purpose use, most popular for car work, but not big sizes or high torque jobs | ||
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* 3/4" - good for heavy duty work, eg washing machine bearings, tougher items on cars and larger vehicles. | * 3/4" - good for heavy duty work, eg washing machine bearings, tougher items on cars and larger vehicles. | ||
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* 1" - industrial duty, professional car mechanics | * 1" - industrial duty, professional car mechanics | ||
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* 1.5" and 2.5" also exist, but aren't often seen. | * 1.5" and 2.5" also exist, but aren't often seen. | ||
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1/2" drive is by far the most popular size. | 1/2" drive is by far the most popular size. | ||
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===Stamped spanner=== | ===Stamped spanner=== | ||
| + | [[image:Stamped spanner M12 317-5.jpg|180px|right|Stamped spanner]] | ||
| + | [[image:Stamped spanner set 416-3.jpg|180px|right|Stamped spanner set]] | ||
| − | + | Aka Cone Spanners. Most spanners are cast, these ones are stamped from sheet [[metal]]. The result is a thin flat spanner with lower weight and strength. They're plenty strong enough for a wide range of tasks, but not high forces. And the thin metal edge makes applying high forces with a bare hand painful. | |
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| − | Most spanners are cast, these ones are stamped from sheet metal. The result is a thin flat spanner with lower weight and strength. They're plenty strong enough for a wide range of tasks, but the thin metal edge makes applying high forces with a bare hand painful. | ||
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| + | Being a cost cutting option, cone spanners tend to be made from mild steel rather than the tougher rust proof chrome vanadium steel used for most spanners, so should always be stored dry as they rust readily. | ||
| + | Stamped spanners tend to come as accessories supplied with an [[appliance]]. Manufacture cost is much lower than cast spanners. Whole sets of stamped spanners are rarely seen. | ||
===Multispanner=== | ===Multispanner=== | ||
| + | [[image:Multispanner small 422-3.jpg|180px|right|Bike spanner]] | ||
| − | + | A stamped sheet spanner with many different size cutouts around the edges, or a casting with many recesses. Available in a few well known patterns (flat sheet, dog bone, and the ring type shown). These don't give good performance and can't be recomended for general DIY use, they're better suited to bikes where the low weight and size is more important than decent usability, and they're only occasionally used. The small ring shaped ones (pictured) are the least friendly to use due to poor leverage. | |
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| − | A stamped sheet spanner with many different size cutouts around the edges, or a casting with many recesses. Available in a few well known patterns (flat sheet, dog bone, and the ring type shown). These don't give good performance and can't be recomended for general DIY use, they're better suited to bikes where the low weight and size is more important than decent usability, and they're only occasionally used. The small ring shaped ones (pictured) are the least friendly to use. | ||
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===Basin wrench=== | ===Basin wrench=== | ||
| − | + | [[image:Basin wrench 318-7.jpg|180px|left|Basin wrench]] | |
| − | [[image:Basin wrench 318-7.jpg| | ||
Can undo taps from a greater variety of positions than other spanner types. Useful when working in confined positions. | Can undo taps from a greater variety of positions than other spanner types. Useful when working in confined positions. | ||
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Self adjusting basin wrenches are also quite popular. | Self adjusting basin wrenches are also quite popular. | ||
| + | ===Immersion heater spanners=== | ||
| + | A large spanner for [[immersion heater]]s. Two types commonly available include the large ring spanner, and a box spanner version with a bar or "wing" handles. Both as show below: | ||
| − | + | [[image:Immersion spanner 0766-6.jpg|120px|left]][[Image:ImmersionHeaterBoxSpanner.jpg|180px]] | |
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| − | [[image:Immersion spanner 0766- | ||
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| + | * Undoing an [[immersion heater]] in an empty cylinder can buckle the cylinder. | ||
* Old immersion heaters should be loosened a bit while the cylinder is still full | * Old immersion heaters should be loosened a bit while the cylinder is still full | ||
| + | * Hitting the spanner is often less likely to buckle a cylinder than applying a continuous large torque. | ||
| + | * Once the immersion is moving a bit, then drain the cylinder to below the [[heater]] and remove. | ||
| − | + | [[image:Rupertbear's box spanner WhiteBackground-2.jpg|left|250px|Home made spanner]] | |
| + | ===Make your own=== | ||
| + | Very large sizes can get pricey, and making large spanners can be doable. The spanner pictured here was successfully built and deployed to free a stuck [[immersion heater]] where access was extremely restricted, and the normal box spanner did not offer enough leverage. This very large (3.5") box spanner here started life as an off the shelf immersion heater box spanner like that shown above. To increase the reach of the spanner and get the handles clear of pipework and other obstructions, its handles were removed and an 18" section of 3.5" steel pipe was welded to the back of the spanner. This was then drilled at the far end with a 18mm [[Drill bit|drill]] to create holes for a large tommy bar to be inserted through. Finally some extra weld lines across the flats of the original box spanner not only provide a little reinforcement, but also helped reduce the effective diameter of it a little to improve the fit on the [[immersion heater]]. | ||
==Wrenches== | ==Wrenches== | ||
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Spanners are known as wrenches in American English. Adjustable spanners are usually called wrenches here. | Spanners are known as wrenches in American English. Adjustable spanners are usually called wrenches here. | ||
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==Spanner sizes== | ==Spanner sizes== | ||
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===What the size means=== | ===What the size means=== | ||
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Metric sizes and most imperial sizes (AF but not BSW or BSF) are 'across flats' dimensions, ie from top to bottom on this diagram: | Metric sizes and most imperial sizes (AF but not BSW or BSF) are 'across flats' dimensions, ie from top to bottom on this diagram: | ||
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____ | ____ | ||
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/ \ | / \ | ||
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/ \ | / \ | ||
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\ / | \ / | ||
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\____/ | \____/ | ||
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Whitworth sizes and BSF, which aren't too common nowadays, are measured quite differently. | Whitworth sizes and BSF, which aren't too common nowadays, are measured quite differently. | ||
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===Substituting sizes=== | ===Substituting sizes=== | ||
| + | One handy [[tool]] is a list of the exact metric sizes of all common imperial spanners. This is because some imperials make a good fit for metric [[nut]]s and vice versa - although many don't. A good example is 3/4", which is 19.05mm. | ||
| − | + | This is definitely not a recommendation to use the sizes that don't fit well, this can damage [[nut]]s & spanners, and injure hands when they slip. | |
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| − | This is definitely not a recommendation to use the sizes that don't fit well, this can damage | ||
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More information and tables here: [[Size conversion]] | More information and tables here: [[Size conversion]] | ||
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==More torque please== | ==More torque please== | ||
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===Extension tubes=== | ===Extension tubes=== | ||
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Fitting steel tube over a spanner to get much more leverage works, but is a known cause of injuries. Where large leverage is needed, a socket is a safer option, with long handles available. | Fitting steel tube over a spanner to get much more leverage works, but is a known cause of injuries. Where large leverage is needed, a socket is a safer option, with long handles available. | ||
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===Impact wrench=== | ===Impact wrench=== | ||
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When even more torque is needed, an impact wrench is the best choice. This is much better controlled way to apply high torque than hand tools. | When even more torque is needed, an impact wrench is the best choice. This is much better controlled way to apply high torque than hand tools. | ||
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==See Also== | ==See Also== | ||
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* [[Wrenches]] | * [[Wrenches]] | ||
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* [[Clamps]] | * [[Clamps]] | ||
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* [[Special:Allpages|Wiki Contents]] | * [[Special:Allpages|Wiki Contents]] | ||
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* [[Special:Categories|Wiki Subject Categories]] | * [[Special:Categories|Wiki Subject Categories]] | ||
| − | + | * [http://www.sheldonbrown.com/tooltips/conewrenches.html Cone spanner guidance] | |
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[[Category:Tools]] | [[Category:Tools]] | ||
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[[Category:Basics]] | [[Category:Basics]] | ||
Latest revision as of 12:15, 16 December 2016
Spanner types
Open end
Ring
Not as prone to slipping off as open end, but usable in less situations.
Combination
A combination spanner has 2 different types of driver on the one spanner. Most often these are open and ring, but other combinations are also available.
Ratchet
A real boon where getting the spanner onto the nut is difficult, eg for some car work.
Adjustables
Adjusable spanners are called wrenches.
Self adjusting
- One can handle a range of sizes
- Handy for odd sizes
- Not as robust as fixed sizes, and more prone to slipping off in use.
- Useful for portable tool kits
Box spanner
The forerunner of the socket set. Lighter, cheaper, weaker, and no longer very popular.
Their greater depth is sometimes useful for recessed fixings. So also is their relative thinness, when the recessed fixing is in a narrow hole.
Their much lighter weight than sockets makes them useful in portable tool kits.
Socket set
Cast steel sockets can apply much more torque and control than open ended spanners, but are more cumbersome and can't always be used.
Extension bars enable clearing nearby obstacles.
Torque wrenches enable setting bolts or nuts to precise torque. A few different types exist.
Deep sockets can be used where bolt threads protrude, and on spark plugs.
Size
Sockets have a square hole in to drive them, and this can be any of several sizes:
- 1/4" - for very light duty work eg appliance case screws
- 3/8" - light & medium duty. Can do a fair percentage of car work
- 1/2" - good for a lot of general purpose use, most popular for car work, but not big sizes or high torque jobs
- 3/4" - good for heavy duty work, eg washing machine bearings, tougher items on cars and larger vehicles.
- 1" - industrial duty, professional car mechanics
- 1.5" and 2.5" also exist, but aren't often seen.
1/2" drive is by far the most popular size.
Stamped spanner
Aka Cone Spanners. Most spanners are cast, these ones are stamped from sheet metal. The result is a thin flat spanner with lower weight and strength. They're plenty strong enough for a wide range of tasks, but not high forces. And the thin metal edge makes applying high forces with a bare hand painful.
Being a cost cutting option, cone spanners tend to be made from mild steel rather than the tougher rust proof chrome vanadium steel used for most spanners, so should always be stored dry as they rust readily.
Stamped spanners tend to come as accessories supplied with an appliance. Manufacture cost is much lower than cast spanners. Whole sets of stamped spanners are rarely seen.
Multispanner
A stamped sheet spanner with many different size cutouts around the edges, or a casting with many recesses. Available in a few well known patterns (flat sheet, dog bone, and the ring type shown). These don't give good performance and can't be recomended for general DIY use, they're better suited to bikes where the low weight and size is more important than decent usability, and they're only occasionally used. The small ring shaped ones (pictured) are the least friendly to use due to poor leverage.
Basin wrench
Can undo taps from a greater variety of positions than other spanner types. Useful when working in confined positions.
Self adjusting basin wrenches are also quite popular.
Immersion heater spanners
A large spanner for immersion heaters. Two types commonly available include the large ring spanner, and a box spanner version with a bar or "wing" handles. Both as show below:
- Undoing an immersion heater in an empty cylinder can buckle the cylinder.
- Old immersion heaters should be loosened a bit while the cylinder is still full
- Hitting the spanner is often less likely to buckle a cylinder than applying a continuous large torque.
- Once the immersion is moving a bit, then drain the cylinder to below the heater and remove.
Make your own
Very large sizes can get pricey, and making large spanners can be doable. The spanner pictured here was successfully built and deployed to free a stuck immersion heater where access was extremely restricted, and the normal box spanner did not offer enough leverage. This very large (3.5") box spanner here started life as an off the shelf immersion heater box spanner like that shown above. To increase the reach of the spanner and get the handles clear of pipework and other obstructions, its handles were removed and an 18" section of 3.5" steel pipe was welded to the back of the spanner. This was then drilled at the far end with a 18mm drill to create holes for a large tommy bar to be inserted through. Finally some extra weld lines across the flats of the original box spanner not only provide a little reinforcement, but also helped reduce the effective diameter of it a little to improve the fit on the immersion heater.
Wrenches
Spanners are known as wrenches in American English. Adjustable spanners are usually called wrenches here.
Spanner sizes
What the size means
Metric sizes and most imperial sizes (AF but not BSW or BSF) are 'across flats' dimensions, ie from top to bottom on this diagram:
____ / \ / \ \ / \____/
Whitworth sizes and BSF, which aren't too common nowadays, are measured quite differently.
Substituting sizes
One handy tool is a list of the exact metric sizes of all common imperial spanners. This is because some imperials make a good fit for metric nuts and vice versa - although many don't. A good example is 3/4", which is 19.05mm.
This is definitely not a recommendation to use the sizes that don't fit well, this can damage nuts & spanners, and injure hands when they slip.
More information and tables here: Size conversion
More torque please
Extension tubes
Fitting steel tube over a spanner to get much more leverage works, but is a known cause of injuries. Where large leverage is needed, a socket is a safer option, with long handles available.
Impact wrench
When even more torque is needed, an impact wrench is the best choice. This is much better controlled way to apply high torque than hand tools.