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Home Product M8x150 Partial Thread Hex Bolt, Heavy-Duty Fastener, Zinc Plated DIN 933, Structural Steel Hex Head Screw for Machinery Assembly

Half thread external hexagonal bolt M8*150

M8x150 Partial Thread Hex Bolt, Heavy-Duty Fastener, Zinc Plated DIN 933, Structural Steel Hex Head Screw for Machinery Assembly

M8x150 hex bolt

Half threaded hex bolt

External hexagonal bolt M8

Half thread external hexagonal bolt M8*150

M8x150 hex bolt with partial threading, designed as a half threaded hex bolt featuring external hexagonal head. This external hexagonal bolt M8 combines a non-threaded shank section and a 150mm length for versatile fastening applications. Constructed from durable steel with corrosion-resistant zinc plating, suitable for construction, machinery, and automotive assemblies. Compliant with GB standard specifications.

Categories:Fasteners & Fixings

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Product Description

The M8x150 hex bolt, a half-threaded hex bolt, is an external hexagonal bolt designed with partial threading along its 150mm length, offering combined benefits of threaded engagement and unthreaded shank strength. Featuring M8x1.25 standard metric thread pitch, this external hexagonal bolt M8 configuration provides a 13mm hexagonal head (AF size) compatible with standard wrenches. The half-threaded hex bolt typically uses grade 8.8 carbon steel or A2/A4 stainless steel materials, supporting maximum tensile loads up to 800MPa. With a thread length of approximately 75mm (half of total length) and zinc-plated surface finish, it operates effectively in temperature ranges from -50°C to +120°C. Primarily applied in mechanical assembly, structural frameworks, and automotive industries, this fastener offers optimized weight distribution and shear resistance in dynamic load applications, though the fixed thread-to-shank ratio limits adjustment flexibility compared to fully threaded alternatives. Proper installation requires 22-25Nm torque values according to DIN 933 standards.

Parameter	Specification
Product Model	Half thread external hexagonal bolt M8x150
Thread Size	M8x1.25
Total Length	150 mm
Threaded Length	75 mm (Half threaded hex bolt)
Hex Width Across Flats	13 mm (External hexagonal bolt M8)
Material	Carbon Steel (Grade 8.8)
Surface Treatment	Zinc-plated
Strength Class	ISO 898-1 Class 8.8
Standard Compliance	DIN 933 / ISO 4017
Thread Type	Right-hand metric coarse
Head Type	External hexagonal head
Torque Capacity	20 N·m (Dry, no lubrication)
Temperature Range	-50°C to +120°C
Corrosion Resistance	Salt spray test: 240 hours
Applications	Construction, machinery, automotive (M8x150 hex bolt applications)

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