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techtalk:ref:tools806 [2020/04/29 00:41] hippysmack [Torque Range] |
techtalk:ref:tools806 [2021/01/29 01:07] (current) hippysmack |
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| [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | ||
| - | ====== REF: HD List of Hardware P/N & Descriptions ====== | ||
| - | \\ | ||
| ====== Strengths Of Various Fasteners ====== | ====== Strengths Of Various Fasteners ====== | ||
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| {{:techtalk:ref:svcproc:bolt_head_grade_markings.jpg?direct&300|}} ((drawing by Hippysmack)) \\ | {{:techtalk:ref:svcproc:bolt_head_grade_markings.jpg?direct&300|}} ((drawing by Hippysmack)) \\ | ||
| - | ===== Torque Range ===== | ||
| - | Torque specifications are normally stated within a range and not a specific number. \\ | ||
| - | The range is given to accommodate these factors. \\ | ||
| - | When the nut on a bolt is tightened; ((Machinery's Handbook 27th Edition dated 2004 pg 1509)) \\ | ||
| - | An initial tensile load is placed on the bolt that must be taken into account in determining it's safe working strength or external load-carrying capacity. \\ | ||
| - | The total load on the bolt theoretically varies from a maximum equal to the sum of the initial and external loads. \\ | ||
| - | (from when the bolt is absolutely rigid and the parts held together are elastic) to a minimum equal to either the initial or external loads, whichever is the greater. \\ | ||
| - | (where the bolt is elastic and the parts held together are absolutely rigid). \\ | ||
| - | No material is absolutely rigid, so in practice the total load values fall somewhere between these maximum and minimum limits. \\ | ||
| - | (depending upon the relative, elasticity of the bolt and joint members) \\ | ||
| ====== Mechanical Properties and Grade Markings of Nuts ====== | ====== Mechanical Properties and Grade Markings of Nuts ====== | ||
