S-91783A544 1/4"-20 x 1 1/4" ASME B18.6.3 Stainless Steel Round Head Slotted Screws
Stainless Steel Round 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
- Exceptional corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
- High tensile strength of 100,000 psi ensures reliable, heavy-duty fastening that withstands significant mechanical stress.
- Precise Class 2A thread fit with UNC coarse threading provides easy installation and secure, vibration-resistant connections.
- Rockwell B100 hardness offers excellent durability and resistance to wear, extending the screw's service life.
- Fully threaded design allows for maximum grip and holding power along the entire length of the fastener.
- Compliance with ASME B18.6.3 guarantees consistent quality, dimensional accuracy, and interchangeability.
- RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence for global supply chains.
Professional Applications & Engineering Value
This 1/4"-20 rounded head slotted screw is engineered to solve critical fastening challenges in demanding industrial applications. Made from 18-8 stainless steel with a passivated finish, it delivers superior resistance to rust and chemical exposure, making it suitable for machinery, assembly lines, and outdoor equipment. The UNC coarse thread and Class 2A fit facilitate quick, secure installation while minimizing cross-threading risks. Its fully threaded design ensures uniform load distribution, preventing loosening under vibration—common in automotive, construction, and manufacturing sectors. By meeting ASME B18.6.3 standards, it provides reliability and consistency, reducing downtime and maintenance costs for B2B users.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC coarse thread with Class 2A fit for precise dimensional tolerance, ensuring easy assembly and interchangeability. It complies with ASME B18.6.3 manufacturing specifications, RoHS 3 (2015/863/EU), and REACH (EC 1907/2006) regulations, confirming its adherence to safety and environmental standards. The right-hand thread direction and fully threaded design further support its use in standardized industrial fastening systems.
