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ASTM A 394 Document Information:
Title
Standard Specification for Steel Transmission Tower Bolts, Zinc-Coated and Bare
ASTM International
Publication Date:
Dec 1, 2008
Scope:
This specification covers the chemical and mechanical
requirements of hexagon and square-head zinc-coated steel bolts and
atmospheric corrosion-resistant bolts, in nominal thread diameters
of ½ 5/8 , ¾ , 7/8
and 1 in. for use in the construction of transmission towers,
substations, and similar steel structures. The various types of
bolts covered in this specification are:
Type 0—Hot-dip zinc-coated bolts made of low or medium
carbon steel.
Type 1—Hot-dip zinc-coated bolts made of medium carbon
steel, quenched and tempered.
Type 2—Withdrawn in 2005.
Type 3—Bare (uncoated), quenched and tempered bolts
made of weathering steel.
Annex A1 of this specification covers hot-dip zinc-coated steel
ladder bolts, step bolts, and support-equipment bolts.
Nuts and washers that are supplied under this specification that
are hot-dip zinc coated shall be in accordance with 4.4.
Terms used in this specification are defined in Terminology F
1789.
The values stated in inch-pound units are to be regarded as the
standard. The values given in parentheses are for information
only.
The following safety hazards caveat pertains only to the test
methods portion, Section 11, 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.
*A Summary of Changes section appears at the end of this
standard.
Keywords:
- bolts
- carbon steel
- steel
- transmission tower
- weathering steel
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