Industry News
Why does the performance of adhesive-coated bolts deteriorate?
Adhesive-coated bolts feature a specialized adhesive layer applied to their surface, serving three core functions: fastening, sealing, and anti-loosening. This coating not only enhances the bond between the bolt and the connected component but also isolates external contaminants, improving overall f......
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Why Do Your Galvanised Screws Rust?
Many assume galvanised screws possess inherent rust-proof properties, yet they still corrode during use. What exactly is happening? In truth, the zinc coating serves merely as a protective “outer layer” for the screw, not a universal shield. Rust formation is largely linked to the condition of the c......
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How to Select Self-Tapping Screws?
Self-tapping screws feature diverse classification dimensions. Common types include Phillips pan-head self-tapping screws, standard pan-head self-tapping screws, and Phillips countersunk self-tapping screws. Additionally, they are categorized by tip characteristics into drill-point, flat-point, and ......
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External Hex Bolt or Internal Hex Bolt？
Hexagon head bolts are a common type of fastener. Compared to flat-head or Phillips-head bolts, they are less prone to stripping during assembly and can withstand higher torque. Hexagon head bolts can be categorised into two types: external hex bolts and Internal hex bolts. So what distinguishes the......
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How to Choose Surface Treatments for Fasteners?
Most fasteners are made of carbon steel or alloy steel and generally require corrosion resistance. Therefore, surface coatings must adhere firmly to prevent peeling during installation and removal. For threaded fasteners, coatings must also be sufficiently thin to ensure threads can engage properly ......
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Characteristics of Quenching Cracks
Quenching cracks are common quenching defects caused by internal stresses that cannot be released during the quenching process. Preventing crack formation should begin at the product design stage. This involves selecting appropriate materials, implementing rational structural design, specifying suit......
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