S-93691A220 8-32 MS51576-11, NASM51576 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 18-8 Stainless Steel and passivated finish, ideal for harsh industrial environments
- Precise alignment and smooth rotation ensured by the precisely machined 3/16" diameter shoulder with tight tolerances
- High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
- Reliable thread engagement with Class 2A fit UNC coarse threads, reducing cross-threading risks
- Secure and efficient installation using a standard 3/32" hex drive, minimizing tool slippage
- Compliance with stringent standards including MS51576-11, ensuring consistent quality and interchangeability
- Environmental and regulatory safety with RoHS 3 and REACH compliance for global supply chain integration
Professional Applications & Engineering Value
This precision shoulder screw is engineered to address critical alignment and durability challenges in industrial assemblies. The 18-8 Stainless Steel construction, combined with a passivated finish, provides excellent resistance to corrosion and wear, making it suitable for machinery, automotive, and electronics applications where exposure to moisture or chemicals is common. The 3/16" shoulder length and precise diameter tolerance ensure accurate positioning of moving parts, reducing vibration and misalignment. With UNC coarse threads and a Class 2A fit, it offers quick assembly and reliable fastening in high-stress environments, while the socket head design allows for compact installation in confined spaces. Ideal for pivots, guides, and rotating mechanisms, this screw enhances operational reliability and reduces maintenance needs.
Specification Summary & Compliance
This shoulder screw features a Class 2A thread fit for consistent engagement and UNC coarse threads (8-32 size) per standard specifications. The shoulder diameter is maintained at 3/16" with a tight tolerance of -0.001" to 0", and the shoulder length is 1/2" with a tolerance of 0" to 0.002" for precise assembly. It complies with MS51576-11 (NASM51576) manufacturing standards and is verified to be RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety regulations.
