Eyebolts, also known as eye bolts, are specialized fasteners characterized by a loop or eye at one end, which allows for the attachment of ropes, chains, cables, or other load-bearing components. The other end typically features a threaded shank, enabling secure fastening into pre-drilled holes. This unique design makes them essential for applications involving suspension, hoisting, and rigging, providing a reliable connection point for transferring loads.
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Standard
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Country/Region
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Description
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ISO 3266
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International
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Defines dimensions, mechanical properties, and tolerances for general-purpose eyebolts
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DIN 580
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Germany
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Specifies requirements for forged eyebolts, including material grades and load ratings
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ASME B18.15
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USA
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Covers unified inch series eyebolts, detailing head styles and thread specifications
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GB/T 798 - 1988
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China
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Details product specifications for metric eyebolts used in various industrial applications
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JIS B 1169
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Japan
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Japanese standard for eyebolts, specifying dimensional and strength requirements
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Grade
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Material
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Tensile Strength (MPa)
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Application Scenarios
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4.6
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Low-carbon steel (e.g., Q215)
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400/240
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General-purpose light-duty lifting and securing tasks
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4.8
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Low-carbon steel (e.g., Q235)
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400/320
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Common industrial assembly, non-critical suspension applications
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8.8
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Medium-carbon steel (e.g., 45# steel)
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800/640
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Automotive lifting equipment, medium-duty industrial rigging
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10.9
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Alloy steel (e.g., 35CrMo)
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1000/900
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High-stress scenarios, such as heavy machinery hoisting
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12.9
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Alloy steel (e.g., 20MnTiB)
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1200/1080
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Extreme-load applications, aerospace component lifting
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A2-70 (Stainless Steel)
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304 stainless steel
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700
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Corrosion-resistant environments (marine, food processing)
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A4-80 (Stainless Steel)
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316 stainless steel
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800
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High-corrosion settings, chemical plants and coastal installations
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Treatment Method
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Abbreviation
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Description
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Zinc Plating
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Zn
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Provides basic rust protection; available in clear, blue, or yellow finishes
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Hot-Dip Galvanizing
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HDG
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Offers superior corrosion resistance, ideal for outdoor and heavy-duty use
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Chrome Plating
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Cr
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Enhances appearance and provides moderate corrosion resistance
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Black Oxide Coating
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Black
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Creates a non-reflective, black surface with mild rust resistance, suitable for internal components
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Dacromet Coating
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Dacromet
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Environmentally friendly, chromium-free coating with high corrosion and anti-galling properties
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Electroplating
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-
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Deposits a thin, uniform layer for improved aesthetics and light corrosion protection
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