A bolt is a type of threaded hardware fastener that is used to position two workpieces in specific relation to each other Bolts come in several configurations for their application and specification variances Since the terms quot bolt quot and quot screw quot were in use before the advent of easily produced helix fasteners they are often synonymous Thus making path for a new standard A325 Tension Control Bolts specification covers 2 kinds of quenched and tempered steel heavy hex structural bolts The minimum tensile strength of the ASTM F3125 Grade A325 Tension Control Bolt Material is about 120 Ksi for sizes 1 and less while the strength for sizes over 1 to 11 2 is around 105 Ksi The first Specification approved by the Council called the Specification for Assembly of Structural Joints Using High Tensile Steel Bolts was published in January 1951 Since that time the Council has published fifteen successive editions Each was developed through the deliberations and approval of the full Council membership andAnkur Metal supply a wide variety of Structural Bolts Manufacturer India Structural Bolts sizes Structural Bolts standard sizes Structural Bolts sizes in mm Structural Bolts specification chart Structural Bolts strength chart Structural Bolts grades chart Structural Bolts dimensions chart size chart metric Structural Bolts size table diameter chart Suggested Specification for Hot Dip Galvanizing Revised May 2002 This suggested specification is provided as a guide to producing a quality document calling for after fabrication hot dip galvanizing of steel elements of a project This document is not a substitute for professional specification assistance

Anchor bolts shall be fully tightened only after the base plates have been grouted PIP STS05130 Erection of structural and Miscellaneous steel specification Sec 6 4 3 i Prior to bolt tightening the QC Structural Inspector shall check the calibration certificates of all the torque wrenches amp prepare the torque record as per the SATIP M 001 01 ASTM A490 and ASTM A490M are ASTM International standards for heavy hex structural bolts made from alloy steel The imperial standard is officially titled Standard Specification for Structural Bolts Alloy Steel Heat Treated 150 ksi Minimum Tensile Strength while the metric standard M is titled Standard Specification for High Strength Steel Bolts Classes 10 9 and Structural Bolts Steel Heat Treated 120 105 ksi Minimum Tensile Strength1 This standard is issued under the fixed designation A325 the number immediately following the designation indicates the year of original adoption or in the case of revision the year of last revision Specification for Structural Joints Using ASTM A325 or A490 Bolts Research Council on Structural Connections Chicago IL June 23 2000 Load and Resistance Factor Design Specification for Structural Steel Buildings American Institute of Steel Construction Chicago IL December 27 1999 The structural bolt is designed with a shorter shank thread length than the standard hex bolt or hex cap screw since these bolts are used for steel to steel connections ASTM A325 Bolts ASTM A325 structural bolts are heavy hex bolts made of medium carbon steel with a flat bearing surface washer faced and chamfered point

1 Structural steel All structural steel shall conform to ASTM A36 JIS SS400 or equal 2 Bolts and Nuts a Common bolts shall be M16 bolt unless otherwise noted and shall conform to ASTM A307 JIS SS400 or equal b High strength bolts shall be M20 bolt unless otherwise noted and shall conform to ASTM A325M TYPE I or equal One high Publications Structural Bolting Handbook 2016 20 00 Add to cart Download Flyer and Order Form Based upon the 2014 edition of the RCSC Specification for Structural Joints using High Strength Bolts and the 2016 edition of the AISC Specification for Structural Steel Buildings with references to the prior 2009 RCSC and 2010 AISC AS 3679 1 – Structural steel – Hot rolled bars and sections AS 1111 – ISO metric hexagon bolts and screws – Product grade C AS 1559 – Hot dip galvanised steel bolts with associated nuts and washers for tower construction AS 1110 ISO metric hexagon bolts and screws – Product grades A and B AS 1112 ISO metric hexagon nutsA307 Standard Specification for Carbon Steel Bolts and Studs 60 000 PSI Tensile Strength A312 Standard Specification for Seamless and Welded Austenitic B Reports on shop and field welding and bolting and structural steel will include the following 1 Name of inspectors 2 Description of work 3 Description of type of inspection Properties of Structural Bolts MINIMUM ASTM DESIGNATION BOLT DIAMETER in MINIMUM TENSILE STRENGTH YIELD STRENGTH ksi ksi 0 2 OFFSET A307 lA307 low carb tlbon steel 1 4 t 41 4 to 4 60 High strength Structural bolts A325 medium carbon steel 1 2 to 1 1 1 8 t 1 1 2 120 105 92 81 A490 alloy steel 1 8 to 1 1 2 to 1 1 2 150 130

This specification is for the purchase of structural bolting assemblies and holding down bolts for constructional steelwork and should be used in conjunction with the National Structural Steelwork Specification for Buildings 7th edition and the Steel Bridge Group Model Project Specification for theSpecification for Twist Off Type Tension Control Structural Bolt Nut Washer Assemblies Steel Heat Treated 120 105 Ksi Minimum Tensile Strength The A490 equivalent TC bolts are to the ASTM F2280 standard Standard Specification for Structural Bolts A325 amp A490 Performance amp Mechanical Stats ASTM A325 Type 1 ASTM A490 Type 1 ASTM A490 Type 3 Description A heavy hex bolt made of medium carbon steel The bearing surface shall be flat and washer faced and the point is chamfered A heavy hex bolt made of alloy steel Tempered Alloy Steel Bolts for Struc tim ll Steel Jbints 4 quot A 563 Specification fdf Carbon and Alloy Steel Nuts 4 6 A 588 Specification for High Sttength Low 173 Alloy Structural Steel with 50 000 psi Minimum Yield Point to 4 in Thick 4 A 709 Specification for Structural Steel for Bridges 4 quot quot B 454 Specification for Structural Bolting The Research Council on Structural Connections RCSC ppprepares specifications and documents related to structural connections RCSC s Specification for Structural Joints Using ASTM A325 or A490 Bolts 2000 is a widely used specification which discusses joints fasteners limit states installation 6 and

related to the use of bolts in steel structures This section concentrates on aspects which affect the economic use of bolts Ref 6 1 should be consulted for more details of all aspects of the use of bolts in steel structures The cost of a bolted connection includes Cost of obtaining cutting and holing components Cost of the bolts Tension Control Bolts TC Bolts or Twist Off Bolts are now the most popular choice in high strength structural bolting and formally recognized by the AISC American Institute of Steel Construction and the RCSC Research Council on Structural Connections as an approved installation method A Tension Control Bolts consists of 1 bolt 1 nut and 1 washer pre 1 8 2014 nbsp 0183 32 The first Specification approved by the Council called the Specification for Assembly of Structural Joints Using High Tensile Steel Bolts was published in January 1951 Since that time the Council has published seventeen successive editions Each was developed through the deliberations and approval of the full Council membership andA325 Specification for Structural Bolts Steel Heat Treated 120 105 ksi Minimum Tensile Strength 1 3 When the steel is to be welded a welding procedure A325M Specification for Structural Bolts Steel Heat suitable for the grade of steel and intended use or service is to Treated 830 MPa Minimum Tensile Strength Metric be utilized ASTM Specifications for Bolt Fasteners Alloy steel and stainless steel bolting materials for high temperature or high pressure service Carbon steel bolts and studs 60 000 psi tensile strength Alloy steel and stainless steel bolting materials for low temperature service Structural bolts steel heat treated 120 105 ksi minimum