S-97345A428 4-40 Shoulder Screws
Shoulder Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure
- High-strength performance with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable load-bearing in demanding applications
- Precision Class 3A thread fit for secure, vibration-resistant assemblies and reduced risk of loosening under stress
- Easy installation and removal thanks to the 5/64" hex socket drive and knurled head for improved grip during manual or tooled handling
- Accurate component alignment provided by the 1/2" shoulder length with tight diameter and length tolerances for consistent positioning
- Wide compatibility with UNC coarse threading (4-40) and right-hand direction, suitable for standard industrial equipment and fastening systems
- Environmental and regulatory compliance meeting RoHS 3 and REACH standards, ensuring safe use in regulated sectors
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision assembly, such as misalignment and component wear. The UNC coarse thread and Class 3A fit deliver exceptional clamping force and vibration resistance, reducing maintenance needs in machinery, automation systems, and electronic enclosures. The knurled head and hex socket drive facilitate quick installation in tight spaces, while the 1/2" shoulder length ensures accurate spacing and rotational stability for gears, bearings, and linkages. Ideal for industrial fasteners in corrosive settings, it combines high tensile strength with long-term reliability, minimizing downtime and replacement costs.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 3A precision fit for tight tolerances. Dimensions include a 4-40 thread size, 1/2" shoulder length (tolerance: -0.005" to 0.005"), and 1/8" shoulder diameter (tolerance: -0.004" to -0.002"). It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and suitability for global industrial applications.
