S-91783A117 4-40 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 with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Superior mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for reliable performance under heavy loads
- Precision thread engagement through Class 2A thread fit and UNC coarse threading ensures secure fastening and vibration resistance
- Optimized installation efficiency with standard slotted drive design and fully threaded shank for quick assembly
- Long-term reliability maintained through compliance with ASME B18.6.3 manufacturing standards
- Environmental responsibility with RoHS 3 and REACH compliance, meeting international regulatory requirements
- Versatile application compatibility through standardized 4-40 thread size and 1-1/4" length for diverse industrial assemblies
Professional Applications & Engineering Value
These 4-40 UNC rounded head slotted screws deliver critical performance advantages for industrial fastening systems. The 18-8 stainless steel composition combined with passivated finish provides exceptional protection against corrosion in demanding environments including manufacturing equipment, electrical enclosures, and marine applications. The fully threaded design with coarse UNC threading ensures maximum grip strength and resistance to vibrational loosening, while the Class 2A thread fit guarantees precise installation without cross-threading issues. With 100,000 psi tensile strength and standardized dimensions per ASME B18.6.3, these screws offer reliable, long-term fastening solutions for OEM assemblies and maintenance applications where durability and compliance are paramount.
Specification Summary & Compliance
This rounded head slotted screw features precise Class 2A thread fit with 4-40 UNC coarse threading and right-hand thread direction. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
