S-91390A150 M8 x 40 mm DIN 916, ISO 4029 Set Screws
Set Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior holding power with cup point tip that bites into materials for secure, vibration-resistant fastening
- Exceptional strength and durability from alloy steel construction with Rockwell C45 hardness for long service life
- Reliable coarse threading (1.25mm pitch) provides faster installation and better performance in softer materials
- Precise Class 5g6g thread fit ensures consistent engagement and optimal clamping force in industrial applications
- Space-saving headless design with 4mm hex drive allows for flush mounting in confined spaces
- Full compliance with DIN 916/ISO 4029 standards guarantees dimensional accuracy and interchangeability
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance for global supply chain compatibility
Professional Applications & Engineering Value
This high-strength M8 set screw delivers exceptional engineering value in demanding industrial applications where vibration resistance and space constraints are critical concerns. The alloy steel construction with Rockwell C45 hardness provides superior resistance to wear and deformation under heavy loads, while the cup point design creates permanent seating that prevents components from loosening in high-vibration environments. The metric coarse thread (1.25mm pitch) ensures quick installation and reliable performance in machinery, automotive assemblies, and precision equipment. As a headless set screw with 4mm hex drive, it offers flush mounting capabilities ideal for rotating shafts, collars, and pulleys where protruding fastener heads would interfere with operation.
Specification Summary & Compliance
This metric set screw features M8 x 1.25mm coarse thread with Class 5g6g thread fit tolerance per ISO standards, ensuring precise dimensional accuracy. The 40mm length provides optimal engagement depth for secure fastening. Manufactured to DIN 916 and ISO 4029 specifications for dimensional consistency and performance reliability. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting the latest environmental regulations for industrial components.
