S-8077A495 4-40 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 construction, ideal for harsh environments and prolonged service life.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi minimum shear strength for reliable performance under high stress.
- Precise Class 3A thread fit ensures tight tolerances and secure fastening in demanding applications.
- Enhanced grip and tool engagement from the knurled socket head and 5/64" hex drive, reducing slippage during installation.
- Durable Black Oxide finish provides added wear resistance and a sleek, professional appearance.
- Accurate shoulder dimensions with controlled tolerances for consistent alignment and spacing in assemblies.
- Compliance with RoHS 3 and REACH regulations guarantees environmental safety and global market acceptance.
Professional Applications & Engineering Value
This 316 Stainless Steel shoulder screw is engineered to address critical needs in precision machinery, automation systems, and industrial equipment. The 4-40 UNC coarse thread and Class 3A fit provide reliable, vibration-resistant fastening, while the Black Oxide finish enhances durability against corrosion and abrasion. The knurled socket head ensures secure tool engagement, minimizing installation errors. Its robust 70,000 psi tensile strength and precise shoulder dimensions make it ideal for applications requiring exact alignment, such as in pivoting mechanisms, bearing mounts, and electronic enclosures, ensuring long-term performance and reduced maintenance.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 3A fit for high precision. Dimensions include a thread diameter of 0.112", thread length of 5/32", shoulder diameter of 1/8" (tolerance: -0.004" to -0.002"), and shoulder length of 11/16" (tolerance: -0.005" to 0.005"). It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial use.
