S-93700A229 M12 x 40 mm 12-Point Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating that protects against rust in harsh industrial environments
• Superior torque transmission thanks to the external 12-point drive design that prevents tool slippage during high-torque applications
• Enhanced load distribution through the integrated flange that eliminates the need for separate washers and reduces surface pressure
• Reliable thread engagement with Class 4h precision thread fit ensuring consistent performance in vibration-prone applications
• Optimized strength-to-weight ratio from alloy steel construction with Rockwell C38 hardness and 180,000 psi tensile strength
• Simplified installation with partial threading that allows for faster assembly while maintaining secure fastening
• Wide compatibility with metric coarse thread (M12 x 1.75mm) meeting international standards for diverse industrial equipment

Professional Applications & Engineering Value

This 12-point flange screw delivers critical engineering solutions for demanding industrial applications where vibration resistance and structural integrity are paramount. The black-oxide alloy steel construction provides superior protection against corrosion while maintaining the high tensile strength (180,000 psi) required for heavy machinery, automotive assemblies, and construction equipment. The external 12-point drive design ensures maximum torque transfer without cam-out, making it ideal for high-stress fastening scenarios. With its Class 4h thread fit and coarse metric threading, this screw maintains precise tolerances in vibrating environments while the integrated flange distributes clamping force evenly, preventing surface damage and reducing assembly time. The partial threading design concentrates strength where needed most, making it perfect for applications requiring precise grip length and reduced thread galling.

Specification Summary & Compliance

This metric screw features M12 x 1.75mm coarse threading with Class 4h thread fit precision, ensuring consistent performance in industrial applications. The manufacturing complies with international metric standards for dimensional accuracy, including the specified 40mm length with 30mm minimum thread engagement. The black-oxide surface treatment provides corrosion resistance while the alloy steel material meets industry standards for mechanical properties, including Rockwell C38 hardness and 180,000 psi tensile strength. The product conforms to relevant industrial specifications for 12-point fasteners and is suitable for applications requiring RoHS and REACH compliance.