We are choosing to keep this technical information about the now obsolete A specification on our website for reference and informational purposes only. These bolts are intended for use in structural connections and therefore have shorter thread lengths than standard hex bolts. Refer to the Structural Bolts page of our site for thread lengths and other related dimensions. The A specification is applicable to heavy hex structural bolts only. ASTM A bolts shall not be coated by hot-dip galvanizing, mechanical deposition, or electroplating with zinc due to the potential risk of hydrogen embrittlement.
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Price USD. Single User. In Stock. Need it fast? Ask for rush delivery. Most backordered items can be rushed in from the publisher in as little as 24 hours. Some rush fees may apply. Add to Cart. View Full Details and Buy. Complementary Documents and Links:. This specification covers two types of quenched and tempered alloy steel, metric heavy hex structural bolts having a tensile strength of to MPa.
They are designated by type denoting chemical composition This specification is applicable to metric heavy hex structural bolts and alternate designs as established by the Research Council in its publication, Specification for Structural Joints Using ASTM and bolts.
For inch-pound bolts, see Specification A The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. The following safety hazards caveat pertains only to the Test Methods portion, Section 13, 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.
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ASTM A490M Structural Heavy Hex Bolts