S-97345A236 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 extended service life.
- Precise component alignment enabled by the 1-1/2" shoulder with tight tolerances for reliable positioning in assemblies.
- High-strength fastening with 70,000 psi tensile strength and 35,000 psi shear strength to withstand significant operational loads.
- Easy installation and removal using the hex socket drive and knurled head for improved grip and torque application.
- Consistent thread engagement with Class 3A fit and 4-40 UNC coarse threads, ensuring secure connections and reducing cross-threading risks.
- Compliance with environmental regulations, meeting RoHS 3 and REACH standards for use in regulated industries.
- Durable performance backed by Rockwell B79 hardness, providing excellent wear resistance in demanding applications.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in industrial settings, such as misalignment and corrosion-induced failure. The 1-1/2" precision shoulder ensures accurate component spacing and rotational stability in machinery, while the 4-40 UNC coarse threads with Class 3A fit deliver reliable fastening in high-vibration environments. The hex socket drive and knurled head facilitate easy installation, reducing assembly time. Ideal for applications like precision instruments, automation systems, and conveyor equipment, this screw provides long-term corrosion resistance and structural integrity, minimizing maintenance needs and downtime.
Specification Summary & Compliance
The screw features a Class 3A thread fit for high precision, with a shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". It adheres to UNC thread standards and is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and suitability for global industrial use.
