08 01 1993 nbsp 0183 32 The yield strength f yb and the ultimate tensile strength f ub for bolt classes 4 6 4 8 5 6 5 8 6 8 8 8 and 10 9 are given in EN1993 1 8 Table 3 1 The first number of the bolt class corresponds to the ultimate strength High Strength Structural Bolts Medium Carbon Steel Quenched and Tempered 1⁄2 thru 1 1 1 8 thru 1 189 85 000 74 000 92 000 81 000 120 000 105 000 ASTM A325 Type 2 High Strength Structural Bolts Low Carbon Marten sitic Steel Quenched and Tempered 1⁄2 thru 1 85 000 92 000 120 000 ASTM A325 Type 3 High StrengthHSFG bolts are high strength structural bolts which have been tightened such as to induce predefined tension in the bolt shank Due to the tension in the bolt the interface between the plies steel members in a joint cannot move relative to each other because of the frictional resistance The bolts act differently than normal bolts or rivets as explained below 2 Scope 01 08 2014 nbsp 0183 32 Joints Using High Strength Bolts continues the tradition of earlier editions The major changes are Appendix B provisions were incorporated directly into Section 5 of the Specification Tolerances for the Turn of Nut method were adjusted Glossary definitions for pretension were added F1136 coating on F1852 and F2280 bolts was deleted from Table ASTM A325 Bolt Dimensions Chart Sizes Strength ASTM A325 bolts are one of the most commonly used fasteners usually used for structural steel connections in heavy steel structures It contains two types of quenched and tempered steel heavy hex structural bolts Type 1 medium carbon carbon boron or medium carbon alloy steel

07 02 2014 nbsp 0183 32 Any grades on our Strength Requirements by Grade Chart with a Q amp T in the Material amp Treatment Column undergo heat treatment and would be considered high strength by most people in the fastener industry Both SAE J429 Grades 5 and 8 have been quenched and tempered and would be considered high strength by most US Bolts Head Marking Grade and Material Nominal Size Range inches Mechanical Properties High Strength Structural Bolts Low Carbon 85 000 92 000 120 000 ASTM A325 Type 3 High Strength Structural Bolts Corrion Resistant Steel 85 000 74 000 92 000 81 000 120 000 105 000 ASTM A354 Grade BB Bolts Studs Alloy Steel 80 000 75 000 83 000 78 000 105 000 100 000 ASTM A354 Grade BC Bolts Studs Alloy Steel 105 000 95 000 109 000 23 rows nbsp 0183 32 US Bolts Head Marking Grade and Material Nominal Size Range inches 08 01 1993 nbsp 0183 32 The yield strength f yb and the ultimate tensile strength f ub for bolt classes 4 6 4 8 5 6 5 8 6 8 8 8 and 10 9 are given in EN1993 1 8 Table 3 1 The first number of the bolt class corresponds to the ultimate strength e g 400 MPa for classes 4 x 500 MPa for classes 5 x 600 MPa for classes 6 x 800 MPa for classes 8 x and 1000 MPa for classes 10 x The

27 10 2014 nbsp 0183 32 Any grades on our Strength Requirements by Grade Chart with a Q amp T in the Material amp Treatment Column undergo heat treatment and would be considered high strength by most people in the fastener industry Both SAE J429 Grades 5 and 8 have been quenched and tempered and would be considered high strength by most Annexure II Selection Chart for Bolt Length amp Weight kg 1000 pcs Table 2 Dia M16 M20 24 rows nbsp 0183 32 High strength structural bolts Medium carbon alloy steel quenched and tempered 1 2 quot High strength bolt connection has the advantages of simple construction good mechanical performance detachability fatigue resistance and no loosening under dynamic load and is a promising connection method High strength bolts use a special wrench to tighten the nut so that the bolt generates a huge and controlled pretension Through the nut and the backing Using High Strength Bolts June 11 2020 Supersedes the August 1 2014 Specification for Structural Joints Using High Strength Bolts Prepared by RCSC Committee A 1 Specifications and approved by the Research Council on Structural Connections www boltcouncil org RESEARCH COUNCIL ON STRUCTURAL CONNECTIONS c o AISC 130 E Randolph

So the used different types of high tensile bolts such as the high tensile stud bolt made up of high tensile strength materials The stud bolt has a stud attached to it for better driving into the surface The ease of tightening of the bolt is possible with the high tensile hex head bolts because they could easily be fitted with hex keys There are also other types of high tensile 05 11 2019 nbsp 0183 32 Chart for easy comparison of US Metric screws and bolts It is always a bit unusual to compare them as they use different measurement systems PSI vs Mpa 180 000 SAE Grade 8 150 000 SAE Grade 5 120 000 116 000 101 530 75 420 SAE Grade 2 74 000 Hex Bolt Identification Markings and Strength Chart Table Guide Hex Bolt Identification Markings and Strength Chart Additonal information on bolts is located at the bottom of the webpage Note Some bolts share identical head High Strength Structural Bolts Low Carbon 85 000 92 000 120 000 ASTM A325 Type 3 High Strength Structural Bolts Corrion Resistant Steel 85 000 74 000 92 000 81 000 120 000 105 000 ASTM A354 Grade BB Bolts Studs Alloy Steel 80 000 75 000 83 000 78 000 105 000 100 000 ASTM A354 Grade BC Bolts Studs Alloy Steel 105 000 95 000 109 000 TN62 Assembly and Tensioning of High Strength Bolts and Nuts Part 1 Class 8 8 7 2 Calibrated impact wrench This process is only permitted when the bolts already in stock are too short to accommodate the washer nut and load indicating washer In order to ensure that the tension wrench is correctly calibrated there are two options available Option 1 1 Place a