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Home Product M8*120 Half Thread Hex Bolt - High Strength Galvanized External Hex Screw for Automotive Machinery Fastening
Half thread external hexagonal bolt M8*120

M8*120 Half Thread Hex Bolt - High Strength Galvanized External Hex Screw for Automotive Machinery Fastening

Half-thread hex bolt M8x120
M8x120 external hex bolt
Metric half-thread bolt 120mm
Half thread external hexagonal bolt M8*120
Half-thread hex bolt M8x120, also known as M8x120 external hex bolt, designed for industrial fastening applications. Metric half-thread bolt 120mm length combines full grip and partial threading for secure mounting. Manufactured in steel or stainless steel, meets ISO/DIN standards. Ideal for machinery, automotive, and construction projects requiring controlled tension and vibration resistance.
Categories:Fasteners & Fixings
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Product Description

The Half-thread hex bolt M8x120 is a metric half-thread bolt designed with an external hexagonal head for tool engagement. Measuring 120mm in total length, it features a partially threaded shank (M8x1.25 thread pitch) and an unthreaded shoulder section, suitable for applications requiring combined clamping and alignment. Constructed from high-grade carbon steel with optional zinc plating or stainless steel variants, it operates reliably in temperatures from -30°C to +250°C. Commonly used in machinery assembly, structural frameworks, and automotive components, this M8x120 external hex bolt offers high tensile strength (typically 8.8 or 10.9 grade) and corrosion resistance. The half-thread design enables adjustable fastening while maintaining shear resistance in the unthreaded portion. Limitations include reduced thread engagement compared to full-thread bolts, requiring precise thickness matching in joined materials. Conforms to DIN 933/ISO 4017 standards.
Parameter Specification
Product Model Half-thread hex bolt M8x120
M8x120 external hex bolt
Metric half-thread bolt 120mm
Thread Standard ISO 4017 / DIN 931
Material Carbon steel (Grade 8.8)
Optional: Stainless steel A2-70
Surface Treatment Zinc-plated (5-8μm)
Alternative: Plain/Phosphated
Total Length 120mm ±1.5mm
Threaded Length 50mm ±2mm (minimum)
Shank Diameter 8.0mm ±0.1mm
Hex Size 13mm (AF width)
Head Height 5.3mm ±0.5mm
Thread Pitch 1.25mm (Standard coarse)
Proof Load ≥800MPa (Grade 8.8)
Torque Capacity 24-28N·m (dry, grade 8.8)
question:How can I make a payment?
answer:We accept TT, PayPal, and other mainstream payment methods.
question:Why is a handling fee charged?
answer:Handling fees cover transaction processing and service costs.
question:Can you provide upgraded or alternative models?
answer:Yes, we can offer upgraded or alternative models based on availability and your needs.
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:How can I make a payment?
answer:We accept TT, PayPal, and other mainstream payment methods.
question:Why is a handling fee charged?
answer:Handling fees cover transaction processing and service costs.
question:Can you provide upgraded or alternative models?
answer:Yes, we can offer upgraded or alternative models based on availability and your needs.
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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