ASTM, SAE AND ISO GRADE MARKINGS AND MECHANICAL PROPERTIES FOR STEEL FASTENERS
Examples:
Grade Mark: B7
Specification: ASTM A193 Grade B7
Fastener Description: Bolts, Screws, Studs
Material: AISI 4140, 4142, OR 4105
Nomial Size Range: 1/4 thru 2-1/2 Over 2-1/2 thru 4 Over 4 thru 7
Mechanical Properties
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