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Home Product M20*120 Metric Half Thread External Hex Bolt Heavy Duty Construction Fastener
Half thread external hexagonal bolt M20*120

M20*120 Metric Half Thread External Hex Bolt Heavy Duty Construction Fastener

M20 hex bolt half thread
External hex head bolt M20x120
Half thread hex screw M20
Half thread external hexagonal bolt M20*120
M20 hex bolt half thread, External hex head bolt M20x120 with partial threading and 120mm length, designed for applications requiring partial grip. Half thread hex screw M20 features durable steel construction and standardized external hexagonal drive.
Categories:Fasteners & Fixings
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Product Description

The M20 hex bolt half thread (External hex head bolt M20x120) is a high-strength fastener with a nominal diameter of 20mm, total length of 120mm, and partially threaded shank (thread length approx. 60mm). Featuring a hexagonal head for tool engagement, this half thread hex screw M20 is typically manufactured in grade 8.8 steel with zinc-plated or hot-dip galvanized anti-corrosion coating. Designed for structural applications requiring combined clamping and alignment functions, it operates in standard temperature ranges (-30°C to +120°C) and withstands tensile strengths up to 800 MPa. Widely used in construction, machinery assembly, and infrastructure projects, its split-thread design enables precise tension control while reducing thread wear. The partial threading allows unthreaded sections to serve as shear planes or alignment guides. Limitations include reduced thread engagement compared to fully threaded alternatives. Compatible with 30mm AF wrenches, it requires 180-220Nm tightening torque for proper installation.
Parameter Specification
Thread Size M20
Total Length 120 mm
Thread Type Half Thread
Head Type External Hexagon
Material Carbon Steel
Surface Treatment Zinc Plated
Hex Head Width 30 mm
Thread Pitch 2.5 mm
Standard DIN 933 / ISO 4017
Strength Grade 8.8
Thread Length 60 mm (nominal)
Drive Type Hex Key/Wrench
Torque Capacity 320 N·m
question:Why can other suppliers source discontinued models and offer prices, while you cannot?
answer:They may use recycled/refurbished components. We exclusively supply original factory-new items to ensure quality and reliability.
question:Can I self-arrange official courier pickup for orders?
answer:Yes, but prior coordination with our team is mandatory to ensure proper documentation and avoid shipment delays.
question:Do you accept payment after product delivery?
answer:Standard terms require prepayment or LC. Exceptions may apply for trusted clients through prior negotiation.
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:Why can other suppliers source discontinued models and offer prices, while you cannot?
answer:They may use recycled/refurbished components. We exclusively supply original factory-new items to ensure quality and reliability.
question:Can I self-arrange official courier pickup for orders?
answer:Yes, but prior coordination with our team is mandatory to ensure proper documentation and avoid shipment delays.
question:Do you accept payment after product delivery?
answer:Standard terms require prepayment or LC. Exceptions may apply for trusted clients through prior negotiation.
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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