Specifications for Structural Joints Using ASTM A325 or A490 Bolts

Special Price $17.95 Regular Price $19.95
In stock
Product Code
AISCA325-A490
This edition of the Specification for Structural Joints Using ASTM A325 or A490 Bolts is significantly reorganized and revised from earlier editions. The major changes are:

  • The previously separate LRFD and ASD versions of this Specification have been unified, with LRFD as the basis in the main body and ASD as an alternative in Appendix B
  • A Symbols (nomenclature) section has been added.
  • A Glossary section has been added.
  • An Index section has been added.
  • Commentary information has been placed immediately following its corresponding Specification provision to provide convenient reference to background and further explanation.
  • A summary of the drawing information and approvals required from the Engineer of Record has been added in Section 1.4.
  • Explicit coverage of material and geometric requirements for washer-type indicating devices, twist-off-type tension-control bolt assemblies and alternative design fasteners has been added in Sections 2.6, 2.7 and 2.8, respectively.
  • Provisions allowing the thermal cutting of bolt holes with the approval of the Engineer of Record have been added in Section 3.3.
  • Requirements for the treatment of burrs have been clarified and expanded in Section 3.4.
  • New information has been added in Section 4 to address the applicability and suitability of the various joint types: snug-tightened joints, pretensioned joints and slip-critical joints. The requirements in this Section also serve to identify the applicable design, installation and inspection requirements for each of the joint types.
  • Requirements have been added to Section 5.1 to address the design implications of the presence of fillers or shims.
  • In Section 5.5, the limitation on prying force for applications that involve tensile fatigue has been reduced from 60 percent of the total applied load to 30 percent.
  • Washer requirements have been simplified and clarified in Section 6.
  • Provisions for pre-installation verification of fastener assemblies have been clarified in Section 7, as invoked in Section 8.2 for pretensioned joints and slip-critical joints.
  • Installation requirements have been simplified and clarified significantly in Section 8.
  • Inspection requirements in Section 9 have been significantly expanded to clarify the intent and applicability.
  • Arbitration provisions to be used in the case of a dispute have been clarified in Section 10.

In addition, many other changes have been made throughout this Specification.

By the Research Council on Structural Connections

More Information
Price$19.95
Customer Service

Customer Service

We're Here To Help

Call us anytime during our customer service hours...


Monday through Friday - 8:30 am to 4:30 pm (Pacific)
Saturday - 10am to 4pm (Pacific)

Order Questions:

TOLL FREE, 800-273-7375 (Outside the U.S. call 818-887-7828).

Our Address:


8001 Canoga Avenue
Canoga Park, CA 91304 US
Phone: 800-275-2665
Fax Your Order
818-887-7990
Print Our Fax Order Form

DescriptionThis edition of the Specification for Structural Joints Using ASTM A325 or A490 Bolts is significantly reorganized and revised from earlier editions. The major changes are:

  • The previously separate LRFD and ASD versions of this Specification have been unified, with LRFD as the basis in the main body and ASD as an alternative in Appendix B
  • A Symbols (nomenclature) section has been added.
  • A Glossary section has been added.
  • An Index section has been added.
  • Commentary information has been placed immediately following its corresponding Specification provision to provide convenient reference to background and further explanation.
  • A summary of the drawing information and approvals required from the Engineer of Record has been added in Section 1.4.
  • Explicit coverage of material and geometric requirements for washer-type indicating devices, twist-off-type tension-control bolt assemblies and alternative design fasteners has been added in Sections 2.6, 2.7 and 2.8, respectively.
  • Provisions allowing the thermal cutting of bolt holes with the approval of the Engineer of Record have been added in Section 3.3.
  • Requirements for the treatment of burrs have been clarified and expanded in Section 3.4.
  • New information has been added in Section 4 to address the applicability and suitability of the various joint types: snug-tightened joints, pretensioned joints and slip-critical joints. The requirements in this Section also serve to identify the applicable design, installation and inspection requirements for each of the joint types.
  • Requirements have been added to Section 5.1 to address the design implications of the presence of fillers or shims.
  • In Section 5.5, the limitation on prying force for applications that involve tensile fatigue has been reduced from 60 percent of the total applied load to 30 percent.
  • Washer requirements have been simplified and clarified in Section 6.
  • Provisions for pre-installation verification of fastener assemblies have been clarified in Section 7, as invoked in Section 8.2 for pretensioned joints and slip-critical joints.
  • Installation requirements have been simplified and clarified significantly in Section 8.
  • Inspection requirements in Section 9 have been significantly expanded to clarify the intent and applicability.
  • Arbitration provisions to be used in the case of a dispute have been clarified in Section 10.

In addition, many other changes have been made throughout this Specification.

By the Research Council on Structural Connections

Related products

Check items to add to the cart or
Recently Viewed
No recently views items
Clear All