Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO M 253:2005
• Năm ban hành / Publication date: 2005
• Tình trạng / Status: W - Hết hiệu lực
• Tên tiếng Anh / Title in English: Standard Specification for Structural Bolts, Alloy Steel, Heat-Treated, 150 ksi Minimum Tensile Strength
• Thay thế cho / Replace: AASHTO M 253:2003
• Số trang / Page: 7

Phạm vi áp dụng / Scope of standard

This specification covers two types of quenched and tempered,
alloy steel, heavy hex structural bolts having a tensile strength
of 150 to 173 ksi.

These bolts are intended for use in structural connections.
These connections are covered under the requirements of the
Specification for Structural Joints Using Specification A 325 or A
490 bolts, approved by the Research Council on Structural
Connection; endorsed by the American Institute of Steel
Construction and by the Industrial Fastener
Institute.²

The bolts are furnished in sizes ½ to 1 ½ in., inclusive.

This specification provides that heavy hex structural bolts
shall be furnished unless other dimensional requirements are
specified on the purchase order.

Terms used in this specification are defined in Terminology F
1789 unless otherwise defined herein.

For metric bolts, see Specification A 490M Classes 10.9 and
10.9.3

The following safety hazards caveat pertains only to the Test
Methods portion, Section 12 of this specification: This
standard does not purport to address all of the safety concerns, if
any, associated with its use. It is the responsibility of the user
of this standard to establish appropriate safety and health
practices and determine the applicability of regulatory limitations
prior to use.

² Available from American Institute of Steel
Construction (AISC), One E. Wacker Dr., Suite 3100, Chicago, IL
60601-2001.

*A Summary of Changes section appears at the end of this
standard.