The high-tensile 4.8-8.8-10.9-12.9 Grade bolts are the best option for the fastening and fixing of the machines and other mechanical bodies. The reason for this is the highly resistive properties of the high tensile bolts towards the corrosion. The corrosion of the bolts can be due to the atmosphere, oxygen, moisture, toxic contents, and different gases. They are having a very long life and are having long durability.
The high tensile bolts are the structural grade bolts. These bolts are having hexagon shape and made of zinc or probably are plated with zinc. These bolts are having the maximum amount of stress. These are basically the heavy duty bolts that can be used for the variety of tasks. These are the most used category of the bolts.
The features of the high tensile 4.8, 8.8, 10.9, 12.9 Grade bolts
» High Strength
» good Sturdiness
» High durability
» high Resistance against rusting
The specifications of high tensile 4.8, 8.8, 10.9, 12.9 Grade bolts
» Standards: DIN EN ISO 4014 and 4017 DIN 931/933 and IS 1364/IS 1363
» Grades: 4.8, 8.8, 10.9 and 12.9
» Size: its diameter ranges from 20 to 100 mm and it is having the length from 3/4 inches to 3.1/2 inches
» Finish: it provides the finish as plain, zinc plate and hot dip galvanized.
The testing conducted to assure quality of production is like-
» Hardness test
» PMI/IGC test
» Mechanical/chemical test
» radiography/hydrostatic test
» Flattening/flaring test
The Katariya steels are the known organization for the manufacturing of high tensile grade bolts with high quality and versatile uses.
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