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ASTM A394-00

Historical Revision

Standard Specification for Steel Transmission Tower Bolts, Zinc-Coated and Bare

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1.1 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 1/2, 5/8, 3/4, 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:

1.1.1 Type 0 -Zinc-coated bolts made of low or medium carbon steel.

1.1.2 Type 1 -Zinc-coated bolts made of medium carbon steel, quenched and tempered.

1.1.3 Type 2 -Zinc-coated bolts made from what is generally described as low-carbon martensite steel, quenched and tempered.

1.1.4 Type 3 -Bare (uncoated), quenched and tempered bolts made of steel having atmospheric corrosion-resistance and weathering characteristics comparable to that of the steel covered in Specifications A242/A242M, A588/A588M, and A709/A709M. The atmospheric corrosion resistance of these steels is substantially better then that of carbon steel with or without copper addition (see 5.4). When properly exposed to the atmosphere, these steels can be used bare (uncoated) for many applications.

1.1.5 For applications requiring improved low-temperature characteristics, use of Types 1, 2, or 3 bolts is recommended.

1.2 Annex A1 of this specification covers zinc-coated steel ladder bolts, step bolts, and support-equipment bolts.

1.3 Unless otherwise specified, all nuts used on these bolts shall be hex style and conform to the requirements of Specification A563 as follows:

Bolt Type Nut Grade Fin Bolt Type Nut Grade Finish 0 A Zinc-coated 1 and 2 DH Zinc-coated 3 DH3 Plain

1.4 Suitable washers for use with Type 0 are zinc-coated carbon-steel washers with dimensions that are in accordance with Specification F436. Suitable washers for use with Type 1 and Type 2 bolts are zinc-coated Type 1 hardened-steel washers that are in accordance with Specification F436. Suitable washers for use with Type 3 bolts are Type 3 hardened-steel washers that are in accordance with Specification F436.

1.5 Nuts and washers that are supplied under this specification that are zinc coated shall be in accordance with 4.4.

1.6 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.


SDO ASTM: ASTM International
Document Number A394
Publication Date May 10, 2000
Language en - English
Page Count 6
Revision Level 00
Supercedes
Committee F16.02
Publish Date Document Id Type View
Dec. 1, 2008 A0394-08E01 Revision
Dec. 1, 2008 A0394-08 Revision
Aug. 1, 2007 A0394-07 Revision
Sept. 15, 2005 A0394-05E01 Revision
Sept. 15, 2005 A0394-05 Revision
Aug. 1, 2004 A0394-04 Revision
May 10, 2000 A0394-00 Revision
Jan. 1, 2024 A0394-08R24 Reaffirmation
June 15, 2015 A0394-08R15 Reaffirmation