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Home Product M8x75 Half Thread Hex Head Bolt, Stainless Steel A2-70, DIN 933, Metric Coarse Thread for Machinery & Automotive Repair

Half thread external hexagonal bolt M8*75

M8x75 Half Thread Hex Head Bolt, Stainless Steel A2-70, DIN 933, Metric Coarse Thread for Machinery & Automotive Repair

M8-75 half thread hex bolt

External hexagonal bolt 75mm

Half-threaded M8 hex bolt

Half thread external hexagonal bolt M8*75

M8-75 half thread hex bolt. External hexagonal head, 75mm length with partial threading. Half-threaded M8 hex bolt designed for secure fastening applications, featuring durable construction and standard hex head compatibility. Suitable for mechanical assemblies requiring partial grip length.

Categories:Fasteners & Fixings

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Product Description

The M8-75 half-threaded hex bolt is a precision-engineered external hexagonal bolt with a 75mm total length, featuring a partially threaded shaft (approximately 35-40mm thread length) and an unthreaded shank section. Designed for M8 metric applications, this galvanized steel fastener combines a 13mm hex head width with an 8mm nominal diameter and 1.25mm thread pitch, rated for 8.8 tensile strength. It operates effectively in -20°C to 120°C environments, suitable for industrial machinery, automotive assemblies, and structural frameworks requiring partial-thread engagement. The half-thread design allows secure clamping between components while permitting axial adjustment in non-threaded sections. Key advantages include vibration resistance through precise thread-lock areas and reduced material wear on unthreaded segments, though it requires precise alignment for optimal load distribution. Typical installation uses include bearing housings, flange connections, and equipment requiring both lateral stability and controlled axial movement.

Parameter	Specification
Product Name	M8-75 Half Thread Hex Bolt
Thread Size	M8 (8mm nominal diameter)
Bolt Type	External Hexagonal Bolt, Half Thread
Total Length	75mm ±1.5mm
Thread Length	35mm ±1mm
Unthreaded Shank	40mm ±1mm
Hex Size	13mm across flats
Head Height	5.3mm ±0.5mm
Material Grade	Class 8.8 Steel
Surface Finish	Zinc Plated (5-8μm)
Thread Pitch	1.25mm coarse thread
Standard Compliance	DIN 933 / ISO 4017
Drive Type	Hex Key/Allen Drive
Proof Load	800 MPa minimum
Working Temperature	-50°C to +120°C

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