7/8-9 J995 GRADE 5 HEX NUT, PLATED

Grade 5 Marking

Mechanical PropertiesGrade 5

1. 1. The proof load in pounds for nuts is computed by multiplying the proof load stress, in psi (lbf/in2), for the nut grade, size, thread series, and type, as shown in Table 2, and tensile stress area in square inches (in2), for the applicable size and thread series shown in Table 3. (both tables available in SAE J995 2017-07 standard) To convert the inch based pounds per square inch (psi) values above to metric Megapascal (MPa) units, multiply the above values by .00689.

Chemical PropertiesGrade 5

1. 1. Phosphorus content may be 0.13 maximum for acid bessemer steel only.
2. 2. If agreed between purchaser and producer, sulfur content may be 0.35 maximum and phosphorus content may be 0.12 maximum provided that manganese content is 0.70 minimum.
3. 3. If agreed between purchaser and producer, sulfur content may be 0.23 maximum.

Dimensional SpecificationsGrade 5

1. All dimensions are in inches.