S-91783A533 1/4"-20 x 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 from 18-8 Stainless Steel and passivated finish, ideal for harsh industrial environments
- High tensile strength of 100,000 psi ensures reliable performance under heavy loads and vibration
- Precision Class 2A thread fit guarantees smooth assembly and consistent clamping force
- Rockwell B100 hardness provides excellent durability and resistance to wear
- Coarse UNC threading allows for quick installation and reduced cross-threading risk
- Fully threaded design offers maximum grip and holding power along the entire shank
- Rounded head with slotted drive enables easy manual installation and a clean, finished appearance
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 1/4"-20 UNC Rounded Head Slotted Screws provide a robust fastening solution where corrosion resistance and mechanical reliability are critical. The 18-8 Stainless Steel construction, enhanced by a passivated finish, effectively resists oxidation and chemical exposure in environments like marine equipment, food processing machinery, and outdoor structures. The coarse thread spacing and Class 2A thread fit ensure rapid, secure installation even in materials prone to chipping or where alignment is challenging. This combination of material properties and precise thread form minimizes the risk of fastener failure, reduces maintenance cycles, and extends the service life of assembled components, delivering long-term value in OEM and MRO settings.
Specification Summary & Compliance
This screw adheres to ASME B18.6.3 specifications, ensuring dimensional accuracy and interchangeability. Threads conform to UNC coarse thread standards with a Class 2A fit for consistent assembly performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and safe for use in regulated industries.
