Tag Archive for Tag: Nuts

Tag: Nuts High-Strength Bolts, Nuts, and Washers

For general purposes, A325 and A490 high-strength bolts may be specified. Each type of bolt can be identified by the ASTM designation and the manufacturer’s mark on the bolt head and nut (Fig. 5.1). The cost of A490 bolts is 15 to 20% greater than that of A325 bolts. Job specifications often require that ‘‘main connections shall be made with bolts conforming to the

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