T - head bolts are named for their distinct "T" - shaped head design, which allows them to slide into T - slots or channels in rails, frames, or structural components. This unique feature enables quick positioning and adjustment, making them highly versatile in applications requiring frequent reconfiguration or modular assembly, such as industrial machinery, construction frameworks, and manufacturing equipment.
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Standard
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Country/Region
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Description
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ISO 12300
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International
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Specifies T - head bolts for structural steel applications
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DIN 6885
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Germany
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Defines T - head bolts with metric threads for sliding groove systems
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ASME B18.6.3
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USA
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Covers T - head bolts in unified inch series for wood and metal connections
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GB/T 37
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China
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Details product specifications for T - head bolts (e.g., GB/T 37 - 1988)
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JIS B 1186
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Japan
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Japanese standard for T - head bolts used in machine tool construction
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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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4.8
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Low - carbon steel (e.g., Q235)
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400/320
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General industrial assembly, light - duty machinery
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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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Heavy - duty machinery, automotive fixtures
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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 applications in construction cranes
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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 (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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Marine systems, chemical equipment
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Aluminum Alloy
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6061 - T6 aluminum
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276
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Lightweight modular structures in aerospace
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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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Basic rust protection with decorative finishes (e.g., clear, yellow zinc)
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Hot - Dip Galvanizing
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HDG
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Heavy - duty corrosion resistance for outdoor/industrial use
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Black Oxide
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Black
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Non - reflective coating for internal machinery components
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Dacromet Coating
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Dacromet
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Eco - friendly, high - performance anti - corrosion for high - vibration environments
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Anodizing (Aluminum)
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Anodized
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Hardened surface layer for aluminum bolts, available in various colors
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Passivation (Stainless Steel)
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-
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Enhances corrosion resistance via protective oxide layer
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