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Home Product M12x55 Metric Hex Bolt, Grade 8.8, Zinc Plated, Construction & Machinery Fasteners
Metric external hexagonal bolts M12*55

M12x55 Metric Hex Bolt, Grade 8.8, Zinc Plated, Construction & Machinery Fasteners

M12x55 hex bolts metric
Metric hexagonal bolts M12x55
Hex head bolts M12x55 metric
Metric external hexagonal bolts M12*55
M12x55 hex bolts metric, high-strength steel with full thread, hot-dip galvanized surface. Metric hexagonal bolts M12x55 comply with ISO 4014/DIN 931 standards. Hex head bolts M12x55 metric ideal for machinery, structural and industrial applications requiring 12mm diameter fasteners with 55mm length. External hexagon drive ensures secure installation.
Categories:Fasteners & Fixings
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Product Description

The M12x55 hex bolts metric are standardized fasteners designed for robust mechanical connections in industrial applications. These Metric hexagonal bolts M12x55 feature a 12mm diameter, 55mm length, and a hexagonal head for precise torque application. Constructed from high-grade steel (typically Grade 8.8 or higher) with optional zinc-plated or stainless steel finishes, they offer tensile strengths up to 800 MPa. Widely used in automotive, machinery, and structural assemblies, these hex head bolts M12x55 metric operate in temperatures from -30°C to +120°C, with corrosion-resistant variants suitable for harsh environments. Advantages include exceptional shear resistance and easy installation with standard tools, though they require proper torque specifications to prevent over-tightening. Not applicable for electrical interfaces, energy storage, or sensor-based systems, their primary function remains high-strength physical fastening in load-bearing configurations.
Metric External Hexagonal Bolts M12x55 Specifications
Parameter Specification
Thread Diameter M12 (12mm)
Length 55mm (underhead measurement)
Material Grade Carbon Steel Grade 8.8
Surface Treatment Zinc Plated (5-8μm)
Tensile Strength 800 MPa min
Head Style Hexagon (DIN 931/ISO 4014)
Hexagon Width 19mm across flats
Thread Pitch 1.75mm (standard coarse)
Thread Length 26mm (approx. 2D standard)
Torque Value 95-110 Nm (dry)
question:Do you accept shipping before payment?
answer:No, we require prepayment to ensure secure transactions and protect both parties.
question:Why is there a handling fee?
answer:The handling fee covers international transaction processing, currency conversion, and administrative costs.
question:Is there a cheaper shipping option available?
answer:Yes, we offer alternative shipping methods for cost savings. Contact us for tailored solutions.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Do you accept shipping before payment?
answer:No, we require prepayment to ensure secure transactions and protect both parties.
question:Why is there a handling fee?
answer:The handling fee covers international transaction processing, currency conversion, and administrative costs.
question:Is there a cheaper shipping option available?
answer:Yes, we offer alternative shipping methods for cost savings. Contact us for tailored solutions.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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