S-99154A391 2-56 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
- Exceptional corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh industrial environments
- Precise alignment and reduced wear due to the accurately machined shoulder with tight diameter and length tolerances
- High-strength reliability offering 70,000 psi tensile strength and Rockwell B55 hardness for demanding mechanical assemblies
- Space-saving low-profile socket head allows for installation in confined spaces while providing secure drive engagement
- Consistent and secure fastening ensured by Class 2A thread fit and coarse UNC thread spacing for quick assembly
- Broad regulatory compliance meeting RoHS 3 and REACH standards for use in regulated global markets
- Versatile right-hand thread design compatible with standard UNC components for easy integration into existing systems
Professional Applications & Engineering Value
This 2-56 UNC shoulder screw is engineered to solve critical alignment and space constraints in precision assemblies. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, making it ideal for electronics, machinery, and automotive applications where environmental durability is essential. The low-profile socket head minimizes protrusion, allowing for sleek designs in compact devices, while the precise shoulder diameter and length ensure accurate component positioning, reducing vibration-induced wear and misalignment. With its Class 2A thread fit and coarse thread spacing, it facilitates rapid installation and reliable clamping force, enhancing productivity in high-volume manufacturing and maintenance operations.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent engagement. Shoulder dimensions include a diameter of 3/32" (tolerance: -0.001" to 0") and length of 1/16" (tolerance: 0" to 0.002") for precise assembly. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and suitability for industrial use.
