S-91029A108 M8 x 50 mm ISO 4017, DIN 933 Extreme-Strength Metric Class12.9 Steel Hex Head Screws
Extreme-Strength Metric Class12.9 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
- Maximum load-bearing capacity with Class 12.9 strength grade, delivering 170,000 psi tensile strength for critical structural applications
- Superior corrosion protection through zinc yellow-chromate plating, extending service life in harsh industrial environments
- Optimized thread engagement with M8 coarse pitch (1.25mm) design, ensuring faster assembly and reduced cross-threading risks
- Exceptional hardness performance at Rockwell C39, maintaining fastener integrity under high-stress conditions
- Full-threaded construction providing consistent clamping force along the entire 50mm length
- Standard-compliant reliability meeting ISO 4017/DIN 933 specifications for guaranteed interchangeability
- Secure external hex drive enabling high-torque installation with common industrial tools
Professional Applications & Engineering Value
These M8 hex head screws deliver critical engineering solutions where high tensile strength and corrosion resistance are paramount. The Class 12.9 steel construction withstands extreme mechanical stresses in heavy machinery, automotive assemblies, and structural frameworks. The zinc yellow-chromate plating creates a protective barrier against oxidation and chemical exposure, significantly extending maintenance intervals in demanding environments. With fully threaded metric coarse pitch design, these fasteners provide superior vibration resistance and faster installation compared to fine-thread alternatives. The external hex drive accommodates standard industrial wrenches, ensuring reliable torque application in confined spaces. These ISO 4017/DIN 933 compliant screws offer guaranteed dimensional accuracy for replacement and OEM applications across global manufacturing standards.
Specification Summary & Compliance
Manufactured to precise Class 6h thread fit tolerances with M8 x 1.25mm coarse thread spacing. Fully compliant with ISO 4017/DIN 933 dimensional standards for hex head screws. The 50mm length provides consistent full-thread engagement. Meets RoHS and REACH environmental compliance requirements for industrial use. Material certification available for Class 12.9 steel verifying 170,000 psi tensile strength and Rockwell C39 hardness specifications.
