7/8-9 X 4 1/2 A193 B7 HEAVY HEX BOLT,TEFLON

Grade B7 Material Marking

Mechanical PropertiesGrade B7

Chemical PropertiesGrade B7

1. 1. Typical steel compositions used for this grade include 4140, 4142, 4145, 4140H, 4142H, and 4145H.
2. 2. For bar sizes over 3 1/2 in. [90 mm], inclusive, the carbon content may be 0.50 % max. For the B7M grade, a minimum carbon of 0.28 % is permitted, provided that the required tensile properties are met in the section sizes involved, the use of AISI 4130 or 4130H is allowed.

Dimensional SpecificationsGrade B7

All dimensions are in inches.