S-91271A537 1/4"-20 x 1/2" IFI 115 12-Point Screws
12-Point 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 Tensile Strength: Withstands up to 170,000 psi, ideal for heavy-duty applications requiring reliable load-bearing capacity.
- Precision Class 3A Thread Fit: Ensures tight, secure fastening with minimal risk of loosening in high-vibration environments.
- Durable Alloy Steel Construction: Provides superior hardness (Rockwell C37) and resistance to wear, extending service life in demanding conditions.
- Flanged Design: Eliminates the need for separate washers, simplifying installation and distributing load more evenly.
- External 12-Point Drive: Allows for high-torque application with standard tools, reducing slippage and improving assembly efficiency.
- Full Threading: Ensures consistent grip along the entire length, enhancing holding power in various materials.
- Compliance with Major Standards: Meets IFI 115, RoHS 3, and REACH, ensuring safety, environmental responsibility, and interoperability.
Professional Applications & Engineering Value
This 1/4"-20 UNC 12-point screw is engineered to address critical challenges in industrial assembly, such as vibration-induced loosening and material fatigue. Made from alloy steel with a Rockwell C37 hardness, it offers exceptional durability under repetitive stress, making it suitable for machinery, automotive, and construction applications. The Class 3A thread fit and coarse thread design provide reliable engagement in both metal and composite materials, reducing the risk of cross-threading. Its flanged feature and external 12-point drive streamline installation, saving time and labor costs while ensuring consistent performance in heavy-duty fastening scenarios.
Specification Summary & Compliance
This screw adheres to precise dimensional standards, including UNC thread type, 1/4"-20 thread size, and Class 3A thread fit for superior accuracy. It is manufactured in compliance with IFI 115 specifications and meets regulatory requirements such as RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it is free from hazardous substances and safe for various industrial uses.
