The digits will follow either an a l or a dash. If you are looking to clamp 2 metal frames of 38 thick each using 34 diameter bolt assembled structural bolts with one washer.
Different Types Of Bolts
Bolt grip length chart. Bolt length w bolt length w single nut single washer calculator single nut single washer calculator enter grip inches enter grip millimeters bolt grip 1 lg. Selecting the bolt length for any given grip and bolt diameter can be facilitated by using the chart entitled bolt lengths for various grips on page 6 167 in the handbook of steel construction 11th edition. Grip bolt diameter inches inches 12 583 4 78 11 18 1 14 1 38 1 12. In a bolt assembly the bolt length that is taken from an already existent standard needs to cover. An bolt grip length chart decimal. The bolt grip length charts linked below are especially handy when replacing non an bolts.
If beveled washers are used add an additional 516 inch to the no washer column for each bevel washer. Divide the number by 16 to find the grip length in inches. Find the last digits of the nas or ms part number for the given bolt in question. The chart and the detailed steps below explain the process of bolt length calculation. Washer 1 thickness if the check box is selected material thickness washer 2 thickness if the check box is selected washer 3 thickness if the check box is selected. If you have any questions please contact our sales team.
The thickness of the washers and nuts that are part of the assembly the projection length the grip length the database stores the mapping between intervals of grip lengths which a bolt can cover and the actual length of the used bolt. Add the length below to grip to determine bolt length required. Mm mm 12 1 14 209 225 13 32 5343 5740 58 bolt16 34 19 78 22 1 25 1 18 30 1 14 32. For each beveled washer used add 516 inch to grip. Bolt grip length chart for a325 and a490 high strength bolts 2008 a 325 heavy hex structural bolts grip is thickness of material to be connected exclusive of washers. For example the part number nas464 5l20 has 20 for the last digits so dividing by 16 indicates a grip length of 1 14 inches.
This table can be used as a guide for bolt length estimation for our structural bolts. 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. 2018 has been modified to allow short bolts to be fully threaded. Measure the total thickness of the parts being bolted together not including washers nut or female threads. The chart is applicable to the imperial series of astm f3125f3125m bolts such as grades a325 and a490 high strength bolts in. Locate the bolt diameter and grip length total thickness in the table to find the required dash size.
The revision of en 14399 10. Tekla structures calculates the minimum possible length of the bolt as follows. For each flat washer used add 532 inch to grip. To understand how advance steel automatically calculates. M36 up to 305 should a grip still be below the min grip tolerance additional washers can be placed under the bolt head to adjust the grip thickness. Tc studs this will apply to bolt lengths shown above the heavy line.
Gallery of Bolt Grip Length Chart
