An overly long unthreaded length prevents the nut from being tightened down correctly. The length of the bolt would need to be 38 x 2 1 532 190625 rounding up on the size increment by 14 inch would give us 34 x 2 a325 structural bolts.
Faq How Is The Bolt Grip Length Calculated In Advance Steel
Grip length of a bolt. If you have any questions please contact our sales. If beveled washers are used add an additional 516 inch to the no washer column for each bevel washer. If your application falls between two grip lengths you can add one or two more washers to a bolt with the next longer grip. An bolt nomenclature follows this format. If the bolt is too short it will not extend out of the bolt hole far enough for the nut to be securely fastened. The unthreaded grip length should be chosen carefully to be around the same length as the thickness of the material and washers through which the bolt passes.
After the rule information has been added to the fields click apply. The maximum grip length is calculated in the same way but the value from the table from which we subtract the thickness of the grip package is the maximum grip length corresponding to the bolt length rule. If the grip is too short the threads of the bolt will extend into the. Have any question. An960 washers are 116 thick 132 thick for the l version. Some bolts may vary from the standard thread length.
Add the length below to grip to determine bolt length required. In addition if a bolt is too long or too short its grip will usually be the wrong length. Grip lengths are in 18 increments. If it is too long it may extend so far that it interferes with the movement of nearby parts. This table can be used as a guide for bolt length estimation for our structural bolts. After the rule information has been added to the fields click save.
Trying to make sense of all the different screw and bolt thread lengths can be a real challengeeven for the most knowledgeable of professionals. As a rule no more than one thread should be within the bolt hole because vibrations can cause the threads to ream out the hole. Grip length is the length of the unthreaded portion of a bolts shank. The maximum grip length is calculated in the same way but the value from the table from which we subtract the thickness of the grip package is the maximum grip length corresponding to the bolt length rule. Thats an important consideration when dealing with critical applications that involve a lot of vibration namely aircraft and racing. As shown in figure 5 2 the grip length should be approximately the same as the thickness of the material to be fastened.
Gallery of Grip Length Of A Bolt
