Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| techtalk:ref:tools806 [2020/04/29 00:40] – [Detecting Counterfeit Fasteners] hippysmack | techtalk:ref:tools806 [2021/01/29 01:07] (current) – hippysmack | ||
|---|---|---|---|
| Line 1: | Line 1: | ||
| [[: | [[: | ||
| - | ====== REF: HD List of Hardware P/N & Descriptions ====== | ||
| - | \\ | ||
| ====== Strengths Of Various Fasteners ====== | ====== Strengths Of Various Fasteners ====== | ||
| Line 16: | Line 14: | ||
| {{: | {{: | ||
| - | ===== Torque Range ===== | + | |
| - | Torque specifications are normally stated within a range and not a specific number. \\ | + | |
| - | When the nut on a bolt is tightened; ((Machinery' | + | |
| - | 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) \\ | + | |
| - | The range is given to accommodate these factors. \\ | + | |
| ====== Mechanical Properties and Grade Markings of Nuts ====== | ====== Mechanical Properties and Grade Markings of Nuts ====== | ||
| - | Three grades of hex and square nuts designated Grades 2, 5, and 8 are specified by the SAE 1995 standard covering nuts in the 1/4" to 1-1/2" diameter range. \\ | + | Three grades of hex and square nuts designated Grades 2, 5, and 8 are specified by the SAE 1995 standard covering nuts in the 1/4" to 1-1/2" diameter range. |
| Grades 2, 5, and 8 nuts roughly correspond to the SAE specified bolts of the same grade. \\ | Grades 2, 5, and 8 nuts roughly correspond to the SAE specified bolts of the same grade. \\ | ||
| Additional specifications are given for miscellaneous nuts such as hex jam nuts, hex slotted nuts, heavy hex nuts, etc. \\ | Additional specifications are given for miscellaneous nuts such as hex jam nuts, hex slotted nuts, heavy hex nuts, etc. \\ | ||
