ASTM F901-01(2007)
(Specification)Standard Specification for Aluminum Transmission Tower Bolts and Nuts
Standard Specification for Aluminum Transmission Tower Bolts and Nuts
ABSTRACT
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.
SCOPE
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, 3/4, 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.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F901 – 01 (Reapproved 2007)
Standard Specification for
Aluminum Transmission Tower Bolts and Nuts
ThisstandardisissuedunderthefixeddesignationF901;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope chanical Properties and Performance Inspection
2.2 ASME Standards:
1.1 This specification covers aluminum structural bolts and
B1.1 Unified Inch Screw Threads (UN and UNR Thread
nuts for use in the construction of aluminum transmission
Form)
towers, substations, and similar aluminum structures.
B18.2.1 Square and Hex Bolts and Screws (Inch Series)
1.2 Diameters of bolts and nuts furnished to this specifica-
Addenda A
5 3 7
tion are ⁄8 , ⁄4 , and ⁄8 in.
B18.2.2 Square and Hex Nuts
1.3 The values stated in inch-pound units are to be regarded
2.3 Military Standard:
as standard. The values given in parentheses are mathematical
MIL-STD-A-8625 AnodicCoatingsforAluminumandAlu-
conversions to SI units that are provided for information only
minum Alloys
and are not considered standard.
3. Ordering Information
2. Referenced Documents
3.1 Orders for bolts and nuts under this specification shall
2.1 ASTM Standards:
include the following:
B565 Test Method for Shear Testing of Aluminum and
3.1.1 Quantity (number of pieces of each item and size);
Aluminum-Alloy Rivets and Cold-HeadingWire and Rods
3.1.2 Name of item;
D3951 Practice for Commercial Packaging
3.1.3 Size (diameter, threads per inch, length);
E29 Practice for Using Significant Digits in Test Data to
3.1.4 Alloy number;
Determine Conformance with Specifications
3.1.5 Shipment lot testing, as required (see Supplementary
E34 Test Methods for ChemicalAnalysis ofAluminum and
Requirements S1);
Aluminum-Base Alloys
3.1.6 Source inspection, if required (see Section 14);
E55 Practice for Sampling Wrought Nonferrous Metals and
3.1.7 Certificate of compliance or test report, if required
Alloys for Determination of Chemical Composition
(see Section 16);
E101 Test Method for Spectrographic Analysis of Alumi-
3.1.8 Additional requirements, if any, to be specified on the
num and Aluminum Alloys by the Point-to-Plane Tech-
purchase order (see 4.2.1, 4.2.3, 8.2.1, 8.2.2, 9.2, 12.1, and
nique
13.1);
E227 Test Method for Optical Emission Spectrometric
3.1.9 Supplementary requirements, if any; and
Analysis of Aluminum and Aluminum Alloys by the
3 3.1.10 ASTM specification and year of issue.
Point-to-Plane Technique
F606 Test Methods for Determining the Mechanical Prop-
NOTE 1—Example: 10 000 piecesAluminum Transmission Tower Bolt,
erties of Externally and Internally Threaded Fasteners,
0.750-10 by 2.00 in., Alloy 2024-T4, Furnish Certificate of Compliance,
Supplementary Requirement S2, ASTM F901–XX.
Washers, Direct Tension Indicators, and Rivets
F1470 Practice for Fastener Sampling for Specified Me-
4. Materials and Manufacture
4.1 Materials—Bolts shall be manufactured from Alloy
This specification is under the jurisdiction of ASTM Committee F16 on
2024 and nuts from Alloy 6061 or 6262. The materials
Fasteners and is the direct responsibility of Subcommittee F16.04 on Nonferrous
chemical composition shall be capable of developing the
Fasteners.
mechanicalpropertiesrequiredbyTable1,wheninthefinished
Current edition approved July 15, 2007. Published July 2007. Originally
condition.
approved in 1984. Last previous edition approved in 2001 as F901 – 01. DOI:
10.1520/F0901-01R07.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on Available from Global Engineering Documents; 15 Inverness Way East,
the ASTM website. Englewood, CO 80112.
3 5
Withdrawn. The last approved version of this historical standard is referenced AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
on www.astm.org. Robbins Ave., Philadelphia, PA 19111-5094 Attn: NPODS.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F901 – 01 (2007)
TABLE 1 Tensile Strength of 2024-T4 Bolts and Proof Loads for TABLE 3 Sample Size and Acceptance for Mechanical Property
A
6061-T6 and 6262-T9 Nuts Tests
Bolt Size, in. Tensile Strength, min, lbf (kN) Acceptance Criteria
5 Number of Pieces in Lot
⁄8 12 400 (55)
Number of Acceptance Rejection
⁄4 18 400 (82)
Tests Number Number
⁄8 25 400 (113)
50 and under 2 0 1
A
Based on a tensile unit stress of 55 000 psi (380 MPa) and the thread stress
51 to 500 3 0 1
area calculated as follows: 501 to 35 000 5 0 1
35 001 to 100 000 8 0 1
A 5 0.7854 [D 2 ~0.9743/n!#
s
where:
A = stress area,
s
6. Mechanical Properties
D = nominal diameter, and
n = threads/in.
6.1 Bolts—Bolts having a length three times the diameter or
longer shall be tested full size as specified in 13.2.2. At the
manufacturer’s option, bolts of less than 3 diameters in length
4.2 Manufacture:
may be tested in full size as specified in 13.2.2. Bolts subjected
4.2.1 Forming—Unless otherwise specified, the bolts and
to tension tests shall meet the tensile strength requirements
nuts shall be cold formed, hot formed, or machined from
specified in Table 1. Bolts of less than 3 diameters in length or
suitable material at the option of the manufacturer.
for other reasons cannot be tested full size in tension, shall be
4.2.2 Condition—The fasteners shall be furnished in the
subject to a shear test to be performed in accordance with
following conditions:
12.2.1. The test results shall conform to the following mini-
Alloy Fastener Condition
mum shear-strength requirements: 37 ksi (255 MPa) for
2024-T4.
2024-T4 bolts solution treated and naturally aged
6.2 Nuts—Nuts shall be tested in accordance with the
6061-T6 nuts solution treated and artificially aged
6262-T9 nuts solution treated, artificially aged, and
mechanical requirements for the applicable type and shall meet
cold worked
the minimum proof-load requirements in Table 1.
4.2.3 Threads—Unlessotherwisespecified,thethreadsshall
7. Significance of Numerical Limits
be rolled or cut at the option of the manufacturer.
7.1 For purposes of determining compliance with the speci-
5. Chemical Composition
fied limits for requirements of the properties listed in this
5.1 Chemical Composition Limits—The bolts and nuts shall
specification, an observed value or calculated value shall be
conform to the requirements as to chemical composition rounded in accordance with Practice E29.
prescribed in Table 2.
8. Dimensions
5.2 Manufacturer’s Analysis—When test reports are re-
quired on the inquiry or purchase order (see 3.1.7), the 8.1 Bolts and Nuts:
manufacturer shall furnish a certificate of conformance certi- 8.1.1 Bolts—Bolts shall be full-size body in accordance
fying compliance with the chemical limits specified in Table 2. with the requirements of AMSE B18.2.1, except the full-body
5.3 Product Analysis: length listed in Table 4 shall be the basis of manufacture and
5.3.1 Product analyses may be made by the purchaser from inspection. Unless otherwise specified, hex bolts shall be
finished products representing each lot. The chemical compo- furnished. The ends of the bolts need not be chamfered or
sition thus determined shall conform to the requirements in pointed.
Table 2. 8.1.2 Nuts—The dimensions of the nuts shall be in accor-
5.3.2 In the event of disagreement, a referee chemical dance with the requirements of ASME B 18.2.2. Unless
analysis shall be performed if agreed upon by both parties. A
otherwise specified, nuts are to be either the regular hex series
sample as required by Table 3 shall be selected for each lot. or a recessed hex series that allows penetration of the bolt
Chemical analysis shall be performed to the requirements of threads into the nut recess area.
13.1 and the result shall conform to Table 2. 8.2 Threads:
A,B
TABLE 2 Chemical Requirements
UNS
Other Elements
C
Designation Alloy General Name Aluminum Chromium Copper Iron Manganese Silicon Titanium Zinc Magnesium
Each Total
Number
A92024 2024 Aluminum 2024 Balance 0.10 3.8–4.9 0.50 0.30–0.9 0.50 0.15 0.25 1.2–1.8 0.05 0.15
A96061 6061 Aluminum 6061 Balance 0.04–0.35 0.15–0.40 0.7 0.15 0.40–0.8 0.15 0.25 0.8–1.2 0.05 0.15
D
A96262 6262 Aluminum 6262 Balance 0.04–0.14 0.15–0.40 0.7 0.15 0.40–0.8 0.15 0.25 0.8–1.2 0.05 0.15
A
Limits are in percent, maximum, unless shown as a range or stated otherwise.
B
Analysis shall regularly be made only for the elements specified in this table. If, however, the presence of other elements is suspected or indicated in amounts greater
than the specified limits, further analysis shall be made to determine that these elements are
...
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