This specification covers aluminum transmission tower bolts and nuts. Bolts shall be manufactured from alloy 2024 and nuts from alloy 6061 or 6262, and shall be cold formed, hot formed, or machined formed. Alloy materials for bolts and nuts shall conform to the chemical requirements of this specification. Bolts and nuts shall conform to the required tensile strength, dimensions, workmanship, finish, appearance, marking, packaging, and shipping. Test methods shall include chemical analysis, wedge tension test, shear test, and proof-stress test.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers aluminum structural bolts and nuts for use in the construction of aluminum transmission towers, substations, and similar aluminum structures.
1.2 Diameters of bolts and nuts furnished to this specification are 5/8, ¾, and 7/8 in.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B565 Test Method for Shear Testing of Aluminum and Aluminum-Alloy Rivets and Cold-Heading Wire and Rods
D3951 Practice for Commercial Packaging
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E34 Test Methods for Chemical Analysis of Aluminum and Aluminum-Base Alloys
E55 Practice for Sampling Wrought Nonferrous Metals and Alloys for Determination of Chemical Composition
E101 Test Method for Spectrographic Analysis of Aluminum and Aluminum Alloys by the Point-to-Plane Technique
E227 Test Method for Optical Emission Spectrometric Analysis of Aluminum and Aluminum Alloys by the Point-to-Plane Technique
F606 Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets
F1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection
B18.2.2 Square and Hex Nuts
MIL-STD-A-8625 Anodic Coatings for Aluminum and Aluminum Alloys Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://dodssp.daps.dla.mil.
Aluminum--specifications; Bolting materials; Nuts--specifications; Steel bolting materials--specifications; Substations; Transmission systems
ICS Number Code 21.060.10 (Bolts, screws, studs); 21.060.20 (Nuts)
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