S-91271A539 1/4"-20 x 5/8" IFI 115 12-Point Screws
12-Point Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Precision Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening in demanding environments.
- Alloy steel construction with Rockwell C37 hardness offers excellent durability and wear resistance for long service life.
- 12-point external drive and head design allows for higher torque application and easier access in confined spaces, improving installation efficiency.
- Integrated flange distributes clamping force over a wider area, helping to prevent surface damage and providing a more secure joint.
- UNC coarse threading enables faster assembly and is less prone to clogging with debris, ideal for quick and reliable fastening.
- Full threading along the 5/8" length ensures maximum grip and adjustability throughout the entire engagement area.
Professional Applications & Engineering Value
This 12-point screw is engineered to solve critical fastening challenges in heavy machinery, automotive assemblies, and structural frameworks where vibration and high loads are common. The use of high-strength alloy steel and a Rockwell C37 hardness rating ensures it can withstand extreme operational stresses without deforming. The external 12-point drive facilitates the application of higher torque with standard tools, reducing installation time and the risk of tool slippage. Its UNC coarse thread and Class 3A thread fit provide a secure, tight connection that resists loosening under dynamic loads, making it an ideal choice for industrial applications requiring dependable, long-lasting fasteners.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC thread with a Class 3A fit for precise dimensional accuracy. It is manufactured in compliance with IFI 115 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements, ensuring it is free from hazardous substances and suitable for use in environmentally conscious industrial settings.
