he head bolts din 931class 4 8 8 8 10 9 Metric Fine thread superior quality

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A head with no markings is grade 2, one with 3 lines spaced 120 degrees is grade 5, and 6 lines spaced at 60 degree intervals is grade 8. nuts are marked in several different ways—see identification marks for hex and heavy hex nuts below. for other grade and property class specifics, look at these reference charts… hex cap screw specifications

The thicker, domed head on these bolts provides greater wear resistance than flat head plow bolts. the underside of the head is angled to sit flush within countersunk holes for use on heavy equipment, such as plows. the square neck keeps these bolts from turning when tightening a nut.

C&n supply high quality of esparragos stud bolt a193 grado b7 w/2 nuts a194 2h a193 b7 stud bolt and a194 2h nuts asme b18.2.1, b18.2.3.6m and b18.2.3.7m dimension standards. a193 b7 heavy hex bolts are ideal for industrial and structural bolting application with high-temperature or high-pressure service environment. fully threaded stud bolt.

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