Metric Size Socket Set Screws
Thread Size: M1.4-M52
DIN913, DIN914, DIN915, DIN916
ISO4026, ISO4027, ISO4028, ISO4029
Various Drive and Point Types
Various Surface Finishes
Other Material Grades are available
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These video was
This is the setup used to test all bolts in tension. The wedge washer is restrained by multi-point constraints to an unseen point above. This allows the washer to rotate in a circular motion around the above point but nothing else. A similar constraint is placed on a section of the bolts threaded region. This allows the bolt to move in a circular motion about a lower unseen point as displacement controlled tension is applied.
The dampers shown at the right represent the friction in the pinned joints (where the multi-point constraint connect above and below).