S-97760A932 M12 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
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
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 demanding applications
- Reliable left-hand threading provides secure fastening in specialized machinery and reverse-rotation scenarios
- Precision coarse threading (M12x1.75) enables faster installation and reduced cross-threading risks
- Full-length threading ensures maximum grip and load distribution across the entire fastener length
- Standard-compliant design meeting ASME B18.2.3.1M and ISO 898-1 specifications for guaranteed interchangeability
- Optimized hex head design (19mm width, 7.5mm height) provides excellent torque transmission and tool engagement
Professional Applications & Engineering Value
This M12 hex head screw delivers critical engineering solutions for industrial applications requiring reverse-thread security. The Class 8.8 steel construction with Rockwell C21 hardness ensures reliable performance in high-vibration environments where standard right-hand threads might loosen. The zinc-plated finish provides essential corrosion protection for machinery exposed to moisture or chemicals. With its left-hand metric threading and coarse pitch design, this fastener is ideal for specialized equipment, rotating assemblies, and safety-critical applications where counter-clockwise rotation could cause conventional fasteners to disengage. The external hex drive and fully threaded design enable quick installation and maximum clamping force distribution.
Specification Summary & Compliance
This metric hex head screw features precise Class 6h thread fit tolerance and M12x1.75 coarse thread spacing with 30mm length. Manufactured to meet ASME B18.2.3.1M dimensional specifications and ISO 898-1 mechanical property requirements for Class 8.8 fasteners. The product complies with international standards for dimensional accuracy and mechanical performance, ensuring reliable interchangeability and consistent quality in industrial applications.
