S-8077A874 3/4"-10 ASME B18.3 Shoulder Screws
Shoulder 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 316 stainless steel and black oxide finish, ideal for harsh industrial environments.
- High tensile and shear strength (70,000 psi tensile, 35,000 psi shear) ensures reliable performance in heavy-duty applications.
- Precise Class 3A thread fit and UNC coarse thread design for secure, vibration-resistant fastening.
- Knurled socket head with 1/2" hex drive provides excellent grip and easy installation with standard tools.
- Accurate 5" shoulder length with tight tolerances enables precise component alignment and spacing.
- Compliance with ASME B18.3 and environmental standards (RoHS, REACH) guarantees quality and regulatory adherence.
- Durable construction with Rockwell B79 hardness offers long-lasting wear resistance in demanding conditions.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in industrial fastening, where corrosion resistance and mechanical stability are paramount. The black oxide finish enhances durability in moist or chemical-exposed settings, while the UNC coarse thread and Class 3A fit ensure quick assembly and reduced loosening under vibration. The 5" shoulder provides a precise pivot or spacer in machinery, automotive, and assembly jigs, minimizing misalignment and wear. Its socket head with knurling allows for secure tool engagement, streamlining maintenance in tight spaces. Ideal for heavy-duty applications, this screw delivers consistent performance where high tensile and shear strength are essential for safety and efficiency.
Specification Summary & Compliance
This shoulder screw features a 3/4"-10 UNC thread with Class 3A precision tolerances, a shoulder diameter of 7/8" (tolerance: -0.004" to -0.002"), and shoulder length of 5" (tolerance: -0.005" to 0.005"). It complies with ASME B18.3 manufacturing standards and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring environmental safety and industry reliability.
