S-97760A922 M8 x 30 mm ASME B18.2.3.1M, ISO 898-1 Left-Hand Threaded Medium-Strength Metric Class 8.8 Steel Hex Head Screws
Left-Hand Threaded 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-plated finish for extended service life in harsh industrial environments
- Exceptional mechanical strength with Class 8.8 rating and 110,000 PSI tensile strength for heavy-duty applications
- Reliable left-hand threading provides secure fastening in specialized machinery and reverse-rotation systems
- Precision coarse thread design (1.25mm pitch) enables faster installation and reduced cross-threading risks
- Full-length threading ensures maximum grip strength and uniform load distribution across the entire fastener
- Standard-compliant manufacturing meeting ASME B18.2.3.1M and ISO 898-1 specifications for guaranteed interoperability
- Optimized hex head design (13mm width) allows for high-torque application with standard tools
Professional Applications & Engineering Value
These M8 metric hex head screws with left-hand coarse threads are engineered to address critical challenges in industrial assembly and maintenance. The Class 8.8 steel construction provides reliable performance in high-vibration environments, while the zinc-plated finish offers essential corrosion protection for outdoor equipment and manufacturing facilities. The 1.25mm coarse pitch threading significantly reduces installation time in production lines and prevents accidental loosening in reverse-rotation applications. These fully threaded fasteners maintain consistent clamping force across their entire 30mm length, making them ideal for securing heavy components in machinery, automotive systems, and structural frameworks where standard right-hand threads would be unsuitable.
Specification Summary & Compliance
Manufactured to precise Class 6h thread fit tolerance standards with M8 x 1.25mm coarse thread specifications. Complies with ASME B18.2.3.1M dimensional requirements and ISO 898-1 mechanical property standards. The Rockwell C21 hardness rating ensures consistent performance under load, while the manufacturing process adheres to international quality benchmarks for industrial fasteners.
