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Home Product M20x80 Half Thread External Hex Bolt, DIN 933 Standard, High Strength, Zinc Plated, Construction Fastener
Half thread external hexagonal bolt M20*80

M20x80 Half Thread External Hex Bolt, DIN 933 Standard, High Strength, Zinc Plated, Construction Fastener

M20x80 half thread hex bolt
M20x80 hex bolt half thread
Half threaded hex bolt M20x80
Half thread external hexagonal bolt M20*80
M20x80 half thread hex bolt with partial threading for structural connections, zinc-plated corrosion resistance. Available as M20x80 hex bolt half thread or half threaded hex bolt M20x80 in carbon steel for construction and machinery applications. Combines non-threaded shank strength with secure threaded fastening.
Categories:Fasteners & Fixings
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Product Description

The M20x80 half thread hex bolt is a precision-engineered fastener designed for high-load applications, featuring a 20 mm nominal diameter, 80 mm length, and partially threaded shank with 40 mm of full threading. This M20x80 hex bolt half thread complies with DIN 933 standards, manufactured from Grade 8.8 carbon steel with zinc-plated corrosion resistance. Ideal for construction machinery, structural assemblies, and heavy equipment, it operates within -50°C to +150°C environments while maintaining 800 MPa tensile strength. The Half threaded hex bolt M20x80 offers optimized grip strength through its unthreaded shoulder section, enabling vibration resistance in dynamic installations. Critical advantages include uniform stress distribution and reduced thread wear during disassembly, though installation requires precise torque control to prevent under/over-tightening. Typical usage spans bridge engineering, industrial presses, and agricultural machinery requiring reliable shear resistance and axial stability.
ParameterSpecification
Product ModelM20x80 half thread hex bolt
Nominal DiameterM20
Total Length80 mm
Thread Length53 mm (approx. 2/3 of total length)
Head TypeExternal Hexagon
Thread TypeMetric Coarse (ISO 898-1)
MaterialCarbon Steel/Stainless Steel A2-70
Surface TreatmentZinc Plated/Geomet®/Dacromet®
Pitch2.5 mm
Head Height12.5 mm
Hex Size30 mm (AF)
Tensile Strength8.8 Grade/700 MPa Min
Torque Value490-530 N·m (Lubricated)
Thread Tolerance6g (External)
Standard ComplianceDIN 933 / ISO 4017 (Partial Thread)
Unthreaded Shank27 mm
Weight Range295-315 g/pc
question:Why were the product labels removed upon receipt?
answer:Labels are removed to protect brand IP rights and prevent unauthorized resale per contractual obligations.
question:How do you handle shipping?
answer:We support DHL, Fedex, UPS, etc., selecting the optimal method based on destination and urgency.
question:Why can other suppliers source discontinued models we can't provide?
answer:Some suppliers use obsolete stock or unauthorized refurbished parts; we only source current, authorized inventory.
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 were the product labels removed upon receipt?
answer:Labels are removed to protect brand IP rights and prevent unauthorized resale per contractual obligations.
question:How do you handle shipping?
answer:We support DHL, Fedex, UPS, etc., selecting the optimal method based on destination and urgency.
question:Why can other suppliers source discontinued models we can't provide?
answer:Some suppliers use obsolete stock or unauthorized refurbished parts; we only source current, authorized inventory.
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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