S-97345A102 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
- Exceptional corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments.
- Precise alignment and secure pivoting ensured by the standard shoulder fit and controlled diameter/length tolerances.
- High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength for demanding mechanical applications.
- Superior thread engagement and reliability provided by the Class 3A fit and coarse 4-40 UNC thread form.
- Secure, non-slip installation enabled by the knurled head and 5/64" hex socket drive, even with gloves.
- Long-term durability supported by a Rockwell B79 hardness rating, resisting wear and deformation.
- Global compliance and safety with RoHS 3 and REACH regulations, ensuring material suitability for regulated industries.
Professional Applications & Engineering Value
This 316 Stainless Steel Shoulder Screw is engineered to solve critical alignment and corrosion challenges in industrial applications. The precision shoulder acts as a built-in spacer or pivot point, eliminating the need for additional bushings and reducing assembly complexity in machinery, conveyor systems, and precision instruments. The Class 3A thread fit on the 4-40 UNC coarse thread ensures vibration resistance and reliable fastening in high-stress environments. Made from corrosion-resistant 316 stainless steel, it withstands aggressive chemicals, moisture, and extreme temperatures, making it a dependable industrial fastener for food processing, chemical plants, and marine equipment where failure is not an option.
Specification Summary & Compliance
This shoulder screw conforms to UNC thread standards with a Class 3A precision thread fit for superior engagement. Dimensional accuracy is maintained with shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". The manufacturing and material composition are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and unrestricted use in global markets.
