S-90276A133 5-40 x 1" ASME B18.6.3 Steel Round Head Slotted Screws
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
- Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
- Exceptional mechanical strength with 60,000 psi tensile strength and Rockwell B69 hardness for reliable load-bearing performance
- Precision thread engagement with Class 2A fit and UNC coarse threads ensuring vibration-resistant fastening
- Universal compatibility with standard slotted drivers for quick installation and maintenance across equipment
- Full-length threading along the 1" length provides maximum grip and adjustment flexibility in assemblies
- Rounded head design reduces surface protrusion while maintaining secure driver engagement
- Regulatory compliance meets ASME B18.6.3 specifications for dimensional accuracy and performance reliability
Professional Applications & Engineering Value
These zinc-plated steel rounded head screws deliver critical performance where corrosion resistance and mechanical durability are paramount. The 5-40 UNC coarse thread configuration prevents cross-threading during high-speed assembly while maintaining vibration resistance in dynamic equipment. The slotted drive accommodates both manual and automated installation across manufacturing, electronics, and machinery applications. With fully threaded design and Class 2A thread fit, these fasteners ensure consistent clamping force distribution, eliminating loose connections in critical joints. The combination of 60,000 psi tensile strength and Rockwell B69 hardness provides reliable performance under cyclic loading conditions common in industrial equipment.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 dimensional standards with Class 2A thread fit tolerance for precision engagement. The 5-40 UNC coarse thread (0.125" diameter) provides optimal thread engagement in various materials. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in regulated industries. Right-hand threading with standard rounded head profile (0.236" diameter, 0.095" height) facilitates consistent installation across applications.
