S-91271A541 1/4"-20 x 7/8" IFI 115 12-Point Screws

Key Features & Benefits at a Glance

• Exceptional Strength & Durability: Crafted from high-strength alloy steel with a Rockwell C37 hardness and 170,000 psi tensile strength, ensuring reliable performance in the most demanding applications.
• Superior Thread Precision: Class 3A thread fit guarantees tight, secure fastening with minimal risk of cross-threading, enhancing assembly efficiency and joint integrity.
• Optimized Flanged Design: The integrated flange provides a larger bearing surface, distributing clamp load effectively and eliminating the need for a separate washer.
• High-Torque Drive System: The external 12-point drive and 1/4" drive size allow for high torque application with standard tools, reducing the risk of stripping and tool slippage.
• Full Thread Engagement: Fully threaded shank ensures maximum grip length and uniform stress distribution along the entire fastener for superior holding power.
• Robust Coarse Threading: 1/4"-20 UNC coarse threads facilitate quick assembly and are highly resistant to fouling in dirty or high-vibration environments.
• Regulatory Compliance & Reliability: Meets IFI 115 specifications and is compliant with RoHS 3 and REACH regulations, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This 1/4"-20 UNC 12-Point Screw is engineered for heavy-duty industrial applications where failure is not an option. The alloy steel construction and Class 3A thread precision address critical engineering challenges like vibration-induced loosening and joint fatigue. The flanged design provides a stable, wide bearing surface that prevents surface damage and compensates for misaligned holes, streamlining assembly in machinery, structural frames, and automotive subsystems. Its external 12-point drive is ideal for confined spaces, allowing for high torque application with standard sockets. This combination of high tensile strength and coarse thread reliability makes it a superior choice for maintaining structural integrity under dynamic loads and harsh operating conditions.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with a precision Class 3A thread fit for superior dimensional accuracy. It is fully threaded and measures 7/8" in length. The product is manufactured in compliance with IFI 115 standards and is verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent industry and environmental regulations for safe use.