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How to calculate spanner size regarding bolts and nuts

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12y ago

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What size spanner fits 22 mm compression pipe?

A 22 mm compression pipe typically requires a spanner size of 24 mm to fit the compression nut properly. It's important to ensure that the spanner is of good quality to avoid rounding the nut edges. Always check for a snug fit to prevent any damage during tightening.


What does a spanner nut look like?

Exactly the same as any other nut. Spanner is just British terminology for wrench.


Why you use the long spanner to open the rusted nut bolt?

you use a spanner to open a rusted nut bolt because you need a strong tool to open a rusted nut bolt.


What is a hex wrench?

what the hex a wrench? Hex wrench is short for hexagonal wrench, that is a wrench or spanner designed to fit a certain size nut or bolt.


Why do we use a spanner not our fingers to unscrew a nut?

Because a spanner provides extra leverage - and is much tougher than our fingers !


Why is it easier to loosen a tight nut using a long spanner?

because spanner has a longer moment arm and torque depends upon moment arm greater the moment greater will be the torque produced so it is easy to unscrew a tight nut using longer spanner


Why does a long spanner make it easier to loosen a stuck nut than a short spanner?

This answer is based on simple mechanics. A spanner is a tool which you use to apply a twisting force on a nut. This twisting force is called a Moment. The equation for a moment: moment = force x distance of application As the force given by your arms will not increase just by using a bigger spanner, the size of the moment is directly related to the distance away from the nut the force is applied. So with a short spanner, say 30cm (0.3 metres) long and a typical force from your arm of about 100N (about 10kg) the moment will be: Moment = 100 x 0.3 = 30 Nm Now if a bigger spanner is used, say 50 cm (0.5 metres) long the moment is: Moment = 100 x 0.5 = 50 Nm So you can see if you use a bigger spanner, you are putting a larger twisting force upon the nut, so it it easier to loosen.


What size spanner fits a 15mm compression fitting?

17mm spanner


What is a spanner nut?

A spanner nut is a type of fastener that has a specific design allowing it to be tightened or loosened using a spanner, or wrench. It typically features a unique shape, such as holes or notches, which require a corresponding tool for manipulation. Spanner nuts are commonly used in applications where secure fastening is critical, such as in machinery or automotive components, to prevent unauthorized access or accidental loosening.


How do you remove spanner lock-nut on front hub?

To remove a spanner lock-nut on a front hub, first ensure the wheel is securely removed from the bike. Use a spanner tool that fits the notches of the lock-nut, and turn it counterclockwise to loosen it. You may need to hold the axle still with another tool or your hand to prevent it from spinning. Once loose, you can unscrew it completely by hand.


Calculate wrench size?

To calculate wrench size you measure across the flat surfaces of the nut or bolt, then pick a wrench marked with that size. Be careful, there are metric and SAE nuts and bolts and some wrenches are close but not right. -For instance you should not use a 1/2" wrench on a 12 mm nut. -It may look right, but will round the edges of the nut.


Why a mechanic would choose a long spanner to undo a tight nut?

The mechanic would get more leverage. The rotational force applied to the nut is greater the longer the spanner, assuming the mechanic applies the same amount of force.