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Home Product M12*85 Partial Thread Hex Bolt, External Hexagon High-Strength Screw for Machinery Construction
Half thread external hexagonal bolt M12*85

M12*85 Partial Thread Hex Bolt, External Hexagon High-Strength Screw for Machinery Construction

M12x85 half thread hex bolt
External hex bolt M12x85
M12x85 partial thread bolt
Half thread external hexagonal bolt M12*85
M12x85 half thread hex bolt with partial threading, externally hexagonal head. External hex bolt M12x85 combines full shank strength and threaded section for versatile fastening. Zinc-plated M12x85 partial thread bolt meets DIN/ISO standards, ideal for machinery and structural applications.
Categories:Fasteners & Fixings
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Product Description

The M12x85 half thread hex bolt is a precision-engineered fastening component designed for applications requiring partial threading and high mechanical stability. This external hex bolt M12x85 features a hexagonal head for standard wrench compatibility and a partially threaded shank (thread length typically 35-40mm) with an 85mm overall length. Constructed from grade 8.8 steel with zinc-plated finish, it operates reliably in temperatures from -30°C to +120°C, suitable for automotive, machinery, and structural assemblies. The M12x85 partial thread bolt enables precise tension control through its unthreaded shoulder section, offering enhanced shear resistance compared to fully threaded variants. While its design optimizes load distribution in clamped joints, the limited threaded portion may restrict adjustability in deep mounting scenarios. The corrosion-resistant coating ensures durability in harsh industrial environments, though periodic inspection is recommended for critical load-bearing applications. This fastener complies with DIN 931 standards, making it compatible with standard M12 nuts and threaded receivers across multiple engineering sectors.
Parameter Specification
Product Model M12x85 half thread hex bolt, External hex bolt M12x85
Thread Type Half thread (partial thread)
Nominal Diameter 12 mm
Total Length 85 mm
Thread Length 57 mm
Shank Length 28 mm
Hexagon Size 19 mm (across flats)
Head Height 8 mm
Thread Pitch 1.75 mm (standard coarse thread)
Material Grade Carbon steel Grade 8.8
Tensile Strength 800 MPa
Surface Treatment Zinc plating or dacromet coating
Standards Compliance ISO 4014, DIN 931
Torque Value 94 Nm (lubricated)
question:Do you offer technical selection services?
answer:Yes, we provide technical selection guidance to help choose suitable products.
question:What shipping methods do you support?
answer:We support DHL, Fedex, UPS, and other mainstream shipping methods.
question:Why do other suppliers stock discontinued models you can't offer?
answer:They may source from unauthorized channels or hold prior 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:Do you offer technical selection services?
answer:Yes, we provide technical selection guidance to help choose suitable products.
question:What shipping methods do you support?
answer:We support DHL, Fedex, UPS, and other mainstream shipping methods.
question:Why do other suppliers stock discontinued models you can't offer?
answer:They may source from unauthorized channels or hold prior 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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