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Home Product M16x80 Half Thread Hex Head Bolt - Structural Fastener, DIN 933/931, Grade 8.8, Galvanized Steel for Construction Machinery
Half thread external hexagonal bolt M16*80

M16x80 Half Thread Hex Head Bolt - Structural Fastener, DIN 933/931, Grade 8.8, Galvanized Steel for Construction Machinery

M16x80 half thread hex bolt
external hex partial thread bolt
half-threaded M16 hexagonal bolt
Half thread external hexagonal bolt M16*80
Categories:Fasteners & Fixings
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Product Description

The M16x80 half thread hex bolt is an external hex partial thread bolt designed for applications requiring adjustable fastening with reduced stress concentration. This half-threaded M16 hexagonal bolt features a 16 mm nominal diameter, 80 mm total length, and a partially threaded shank (approximately 40 mm threaded section) with a standard ISO 4017-compliant hexagonal head. Manufactured from grade 8.8 carbon steel or A2/A4 stainless steel variants, it offers tensile strength up to 800 MPa and operates reliably in temperatures from -50°C to +250°C. The zinc-plated or hot-dip galvanized surface treatment ensures corrosion resistance for outdoor and marine applications. Widely used in structural engineering, machinery assembly, and automotive industries, its partial threading allows simultaneous clamping and alignment while reducing thread wear. Key advantages include vibration resistance and simplified disassembly, though precise torque control is required during installation to prevent under/over-tightening. The external hex design enables standard wrench compatibility but requires sufficient clearance for tool access.
Parameter Specification
Product Model M16x80 half thread hex bolt / External hex partial thread bolt
Thread Size M16 (Metric coarse)
Total Length 80 mm
Thread Length 40 mm (partial threaded section)
Shank Diameter 16 mm (non-threaded section)
Hexagon Head Width 24 mm (across flats)
Head Height 10 mm
Material Carbon Steel (Grade 8.8) / Stainless Steel (A2-70)
Surface Finish Zinc-plated, Plain, Hot-dip galvanized
Thread Standard ISO 898-1 / DIN 931
Corrosion Resistance Class 3 (Zinc coating) / Passivated (Stainless)
Torque Capacity 210 Nm (Grade 8.8)
Tensile Strength 800 MPa (Grade 8.8)
question:What is the after-sales process if a refurbished product malfunctions?
answer:Refurbished products are repaired or replaced within the warranty period at no extra cost.
question:Can shipments be declared under low value for customs?
answer:Yes, low-value declarations are possible if compliant with destination country regulations.
question:What is the warranty period for your products?
answer:Our products come with a 12-month warranty against manufacturing defects from delivery date.
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:What is the after-sales process if a refurbished product malfunctions?
answer:Refurbished products are repaired or replaced within the warranty period at no extra cost.
question:Can shipments be declared under low value for customs?
answer:Yes, low-value declarations are possible if compliant with destination country regulations.
question:What is the warranty period for your products?
answer:Our products come with a 12-month warranty against manufacturing defects from delivery date.
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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