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1、Standard Specification for Structural Bolts, Alloy Steel, Heat-Treated, 150 ksi Minimum Tensile Strength AASHTO Designation: M 253-05 ASTM Designation: A 490-04a AASHTO M 253-05 is identical to ASTM A 490-04a except for the following provisions: 1. All references to the ASTM standards contained in A
2、STM A 490-04a, listed in the following table, shall be replaced with the corresponding AASHTO standard. Referenced Standards ASTM AASHTO A 194 M 292MlM 292 A 325 M 164 A 563 M 291 A 709 M 210MlM 270 F 436 M 293 2. 3. In Section 15.1 of ASTM A 490-04a, change the phrase “furnish the purchaser a test
3、report” to “furnish the purchaser a certified test report.” Replace Section 16.1 of ASTM A 490-04a with the following: 16.1 The party responsible for the fastener shall be the organization that supplies the fastener to the purchaser. The responsible party shall supply test reports, certified by the
4、manufacturer, that indicate the fasteners were manufactured, sampled, tested, and inspected in accordance with this specification and all of its requirements. Replace Note 4 with the following: Note 4-ASTM F 788E 788M and F 1470 do not guarantee 100 percent freedom from nonconforming head bursts. Sa
5、mpling is designed to provide a 95 percent confidence level of freedom from nonconforming head bursts in any test lot. Head bursts within the limits in ASTM F 788E 788M are unsightly but do not affect mechanical properties or functional requirements of the bolt. Bolts exhibiting head bursts that do
6、not meet the physical requirements of ASTM F 788E 788M are rejectable. 4. TS-4f M 253-1 AASHTO Copyright American Association of State Highway and Transportation Officials Provided by IHS under license with AASHTO Licensee=University of Texas Revised Sub Account/5620001114 Not for Resale, 01/11/2009
7、 01:59:13 MSTNo reproduction or networking permitted without license from IHS -,-,- Designation: A 490 - 04a American Association State Highway and Transportation Officials Standard AASHTO No.: M 253 Standard Specification for Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Stre
8、ngth This standard i issued under the fixed designation A 490; the number immediately following the designation indicates the year of original adoption 01, in the case of revision, the year of last ievisioii. A iiuinber in parentheses indicates the year of last reapproval. A superscript epsilon (E)
9、indicates aii editorial change since the last revision or reapproval This standard has been approved for use by agencies ofthe Dqartnient o f Defense. 1. Scope* 1.1 This specification covers two types of quenched and tempered, alloy steel, heavy hex structural bolts having a tensile strength of 150
10、to 173 ksi. 1.2 These bolts are intended for use in structural connec- tions. 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 Connections; endorsed by the American
11、 Institute of Steel Construction and by the Industrial Fastener Institute.2 1.3 The bolts are furnished in sizes 95 to 1 /r in., inclusive. They are designated by type denoting chemical composition as follows: T Y Pe Description Medium carbon alloy steel Withdrawn in 2002 Weathering steel 1.4 This s
12、pecification provides that heavy hex structural bolts shall be furnished unless other dimensional requirements are specified on the purchase order. 1.5 Terms used in this specification are defined in Termi- nology F 1789 unless otherwise defined herein. 1.6 For metric bolts, see Specification A 490M
13、 Classes 10.9 and 10.9.3 1.7 The following safety hazards caveat pertains only to the Test Methods portion, Section 12 of this specification: This stundud oes not purport to udress u11 ufthe sufety concerns, ifan?urization-Hardness value differences shall not exceed the requirements set forth for de
14、carburization in SAE 5121 for Class 2/3H materials when evaluated in accor- dance with 12.2. 8. Dimensions 8.1 Head and Bo 15.1.2 Results of hardness, tensile. and proof load tests; 15.1.3 Results of magnetic particle inspection for loiigitu- 15.1.4 Results of tests and inspections for surface disco
15、nti- 15.1.5 Results of carburization and decarburization tests; 15.1.6 Statement of compliance with dimensional and 15.1.7 Lot number and purchase order number; 15.1.8 Complete mailing address of responsible party; and 15.1.9 Title and signature of the individual assigned certi- 15.2 Failure to incl
16、ude all the required information on the dinal discontinuities and transverse cracks; nuities including visual inspection for head bursts; thread fit requirements; fication responsibility by the company officers. test report shall be cause for rejection. 16. Responsibility organization that supplies
17、the fastener to the purchaser. 17. Product Marking 17.1 Munufacfurers ent$cation-All Type 1 and Type 3 bolts shall be marked by the manufacturer with a unique identifier to identify the inamfacturer or private label distribu- tor, as appropriate. 16.1 The party responsible for the fastener shall be
18、the 17.2 Grude Identijicuton: 17.2.1 Type 1 bolts shall be marked “A 490.” 17.2.2 Type 3 bolts shall be marked m underlined. 17.3 Marking Location and Methods-All marking shall be located on the top of the bolt head and shall be either raised or depressed at the manufacturers option. TS-4f M 253-6 A
19、ASHTO Copyright American Association of State Highway and Transportation Officials Provided by IHS under license with AASHTO Licensee=University of Texas Revised Sub Account/5620001114 Not for Resale, 01/11/2009 01:59:13 MSTNo reproduction or networking permitted without license from IHS -,-,- A 490
20、-04a 17.4 Acceptance Criteria-Bolts that are not marked in accordance with these provisions shall be considered noncon- forming and subject to rejection. 17.5 Type and manufacturers or private label distributors identification shall be separate and distinct. The two identifi- cations shall preferabl
21、y be in different locations and, when on the same level, shall be separated by at least two spaces. 18. Packaging and Package Marking I 8.1 Packaging: 18.1. I Unless otherwise specified, packaging shall be in 18.1.2 When special packaging requirements are required, accordance with Practice D 395 1.
22、they shall be defined at the time of the inquiry and order. 18.2 Package Marking: 18.2.1 Each shipping unit shall include or be plainly marked with thc following information: 18.2.1.1 ASTM designation and type, 18.2.1.2 Size, 18.2.1.3 Name and brand or trademark of the manufacturer, 18.2.1.4 Number
23、of pieces, 18.2.1.5 Lot number, 18.2.1.6 Purchase order number, and 18.2.1.7 Country of origin. 19. Keywords 19. I bolts; alloy steel; steel; structural; weathering steel SUMMARY OF CHANGES Committee F16 has identified the location of selected changes to this standard since the last issue, A 490 - 0
24、4, that may impact the use of this standard. (Approved Aug. 1, 2004.) ( I ) Deleted title of 7.1. (2) Deleted 7.3 because it was redundant with 12.2. (3) Revised Section 16, Responsibility. Committee F16 has identified the location of selected changes to this standard since the last issue, A 490 - 0
25、2, that may impact the use of this standard. (Approved Jan. 1, 2004.) (i) Revised 6.2.1 to include compliance with the maximum tensile values to align with Tables 4 and 5. (2) In 7.2.1, changed “as” to “no” to correct a typo. (3) Revised 9.1 to include a note recognizing that Specifica- tion F 788/F
26、 788M nor Specification F 470 guarantees 100 % freedom from head burst. AS JM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Users of this standard are expressly advised that determination of the validity
27、of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn. Your commen
28、ts are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Your comments wili receive careful consideration at a meeting of the responsible technical committee, which you may attend. If you feel that your comments have
29、not received a fair hearing you should make your views known i o the ASTM Committee on Standards, at the address shown below. This standard is copyrighted by ASTM international. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States. Individual repnnts (single or multipl
30、e copies) of this standard may be obtained by contacting ASTM at the above address or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mai;); or through the ASTM websile (www.astm.org). TS-4f M 253-7 AASHTO Copyright American Association of State Highway and Transportation Officials Provided by IHS under license with AASHTO Licensee=University of Texas Revised Sub Account/5620001114 Not for Resale, 01/11/2009 01:59:13 MSTNo reproduction or networking permitted without license from IHS -,-,-