S-91794A537 1/4"-20 x 1/2" ASME B18.6.3 Stainless Steel Fillister Head Slotted Screws
Stainless Steel Fillister Head Slotted 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
- Superior corrosion resistance from 18-8 Stainless Steel with passivated finish, ideal for harsh environments
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity in demanding applications
- Rockwell B55 hardness provides excellent durability and resistance to wear
- Class 2A thread fit with UNC coarse threading for easy assembly and secure fastening
- Fully threaded design offers maximum grip and holding power along the entire length
- High, narrow rounded fillister head allows for deeper tool engagement and reduced risk of cam-out
- Compliance with ASME B18.6.3, RoHS 3, and REACH ensures quality and environmental safety standards
Professional Applications & Engineering Value
This 1/4"-20 UNC slotted screw is engineered to address critical industrial fastening challenges. The 18-8 Stainless Steel construction, enhanced by a passivated finish, provides exceptional resistance to rust and chemical exposure, making it suitable for marine, food processing, and outdoor equipment. The rounded fillister head with a high, narrow profile offers improved driver engagement, reducing slippage and damage during installation. With a coarse thread and Class 2A fit, it ensures quick, secure assembly in materials like metal and plastic, while the fully threaded design maximizes clamping force. Ideal for machinery, electronics, and automotive assemblies, this screw delivers long-term reliability and performance in industrial screw applications.
Specification Summary & Compliance
This screw features precise Class 2A thread fit with UNC coarse threading (1/4"-20), ensuring dimensional accuracy per ASME B18.6.3 standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in regulated industries. The specifications include a head diameter of 0.414", length of 1/2", and right-hand thread direction, all manufactured to meet rigorous industrial requirements.
