S-91180A921 M20 x 60 mm ISO 8676, DIN 961 Medium-Strength Metric Class 8.8 Steel Hex Head Screws
Medium-Strength Metric Class 8.8 Steel Hex Head 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 corrosion resistance with zinc plating for extended service life in demanding industrial environments
- High tensile strength of 110,000 psi ensures reliable performance in heavy-duty applications and structural assemblies
- Precision Class 6h thread fit provides consistent engagement and vibration resistance in critical connections
- Class 8.8 strength rating delivers excellent load-bearing capacity for construction and machinery applications
- Rockwell C21 hardness maintains thread integrity and prevents stripping during repeated installations
- External hex drive design allows for high-torque installation with standard tools for efficient assembly
- Fine 2mm pitch threading offers superior clamping force and precise adjustment capabilities
Professional Applications & Engineering Value
This M20 hex head screw with Class 8.8 strength rating addresses critical engineering challenges in heavy machinery, structural steelwork, and industrial equipment assembly. The zinc plated finish provides essential corrosion protection for outdoor applications and harsh environments, while the fine 2mm pitch metric threading ensures superior vibration resistance and clamping force retention. Manufactured from high-strength steel with Rockwell C21 hardness, this fully threaded fastener maintains structural integrity under extreme loads, making it ideal for construction projects, manufacturing equipment, and infrastructure applications where reliability and durability are paramount. The external hex drive facilitates quick installation with standard tools, reducing assembly time and labor costs.
Specification Summary & Compliance
This metric hex head screw features precise Class 6h thread fit tolerance and M20x2mm fine pitch threading manufactured to DIN 961 and ISO 8676 standards. The fastener demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. With 60mm length, 30mm head width, and right-hand thread direction, this component meets international quality specifications for industrial fastening applications.
