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techtalk:ref:tools032 [2022/03/27 03:07] hippysmack [Metric Nut/Bolt Threads] |
techtalk:ref:tools032 [2022/03/27 07:38] hippysmack [Metric Nut/Bolt Threads] |
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| ====== Measuring Threads In General ====== | ====== Measuring Threads In General ====== | ||
| + | **Thread TPI or Pitch**: \\ | ||
| You can purchase a cheap template with different size threads to size screws/bolts or go by your local hardware store to use theirs. \\ | You can purchase a cheap template with different size threads to size screws/bolts or go by your local hardware store to use theirs. \\ | ||
| But you don't really need one to accurately find the size of most bolts or thread patterns. \\ | But you don't really need one to accurately find the size of most bolts or thread patterns. \\ | ||
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| You can buy tap/drill and metric conversion charts pretty cheap online or at some bolt or hardware stores. \\ | You can buy tap/drill and metric conversion charts pretty cheap online or at some bolt or hardware stores. \\ | ||
| - | Then hang them up in your shop where you can always find them when needed. \\ | + | Then hang them up in your shop where you can always find them when needed. \\ |
| + | |||
| + | **Bolt/Screw Length**: \\ | ||
| + | Length is measured from the very end of a bolt/screw to where the fastened surface is assumed to be. \\ | ||
| + | Panhead screws / hex bolts / cap screws etc. are measured from under the head to the end. \\ | ||
| + | Flat head screws, tapered shanks under the head, are measured for overall end to end length (head is assumed to end flush with fastened piece). \\ | ||
| + | |||
| + | | Measuring length ((composite of photos used with permission)) | | ||
| + | |{{:techtalk:ref:tools:measuring_different_type_bolts_or_screws.jpg?direct&300|}}| | ||
| |SAE thread gauge: ((photos by Hippysmack))||Tap/drill and metric conversion charts.| | |SAE thread gauge: ((photos by Hippysmack))||Tap/drill and metric conversion charts.| | ||
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| |**24mm**| |3.00| - | - | | |**24mm**| |3.00| - | - | | ||
| - | Metric screw thread OD can be deduced with using an imperial scale caliper using the chart above. \\ | + | **Methods of measuring in pics**: \\ |
| + | Metric screw thread OD can be deduced by using an imperial (US) scale caliper using the chart above. \\ | ||
| Your measurements may not be an exact match to the dims above but will be close enough to make a judgement on the metric counterpart size. \\ | Your measurements may not be an exact match to the dims above but will be close enough to make a judgement on the metric counterpart size. \\ | ||
| - | {{:techtalk:ref:tools:measuring_metric_screw_threads_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) \\ | + | {{:techtalk:ref:tools:measuring_metric_screw_threads_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) {{:techtalk:ref:tools:measuring_screw_pitch_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) \\ |
| ====== Common Brake Line Threads ====== | ====== Common Brake Line Threads ====== | ||
| Most brake systems use flared fittings since they have strong metal to metal connections. \\ | Most brake systems use flared fittings since they have strong metal to metal connections. \\ | ||
