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Identification methods of high strength bolt

The identification methods of high strength bolt are mainly seen in five aspects: 1. Look at the mark. Generally, there is a mark on the packing box of the bolt. It can be divided into three levels: 8.8, 10.9 and 12.9. Generally, there is no grade mark on the hexagonal plane of hexagon bolt, which [...]

By Hex Bolt Nut|February 16th, 2021|Bolt Types, Bolts & Nuts Grade, Carriage Bolts, Elevator Bolts, Expansion Bolt, Grade 10.9, Grade 8.8, Heavy Hex Bolts, High Strength Bolts, High Strength Structure Bolts, High Tensile Bolts|Comments Off

Heat Treated High Strength Fastener

Heat treated high strength fastener should be quenched and tempered according to the technical requirements. The purpose of heat treatment and tempering is to improve the comprehensive mechanical properties of fasteners to meet the specified tensile strength and yield ratio of products. Heat treatment process has a vital impact on high-strength fasteners, especially its internal [...]

By Hex Bolt Nut|February 3rd, 2021|A563, ASTM International Standard, Bolt Types, F3125, Fastener, Fasteners Knowledge, High Strength Structure Bolts, Square Head Bolt, Stainless Steel Bolts, Structural Bolts|Comments Off

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