S-97760A916 M6 x 25 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
- Exceptional corrosion resistance with zinc-plated finish, extending service life in harsh industrial environments
- High tensile strength of 110,000 psi ensures reliable performance under heavy loads and vibration
- Left-hand threading provides secure fastening in applications where right-hand threads would loosen
- Class 8.8 strength grade delivers consistent mechanical properties for critical assembly requirements
- Full threading along 25mm length offers maximum grip and adjustment flexibility
- External hex drive design enables high-torque installation with standard tools
- Coarse 1mm pitch threading allows for quick assembly and reduced cross-threading risk
Professional Applications & Engineering Value
This M6 left-hand hex head screw solves critical reverse-rotation challenges in machinery, automotive, and equipment manufacturing where conventional right-hand threads would unscrew under specific operational forces. The Class 8.8 steel construction with Rockwell C21 hardness provides optimal balance between strength and ductility, preventing brittle failure while maintaining 110,000 psi tensile strength. The zinc-plated finish creates a protective barrier against oxidation and chemical exposure, making these metric coarse thread screws ideal for outdoor equipment, rotating assemblies, and maintenance applications requiring left-hand threaded industrial fasteners. The combination of external hex drive and fully threaded design ensures maximum clamping force distribution and installation efficiency.
Specification Summary & Compliance
Manufactured to precise Class 6h thread fit tolerances with M6x1mm coarse thread specifications. Complies with ASME B18.2.3M dimensional requirements and ISO 898-1 mechanical property standards for Class 8.8 strength grade fasteners. The 25mm length and 10mm hex head dimensions ensure compatibility with standard industrial applications. Meets international regulatory requirements including RoHS and REACH compliance for material safety.
