S-90337A386 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 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability.
- Precise alignment and smooth rotation ensured by the precisely machined 1-1/2" shoulder with minimal diameter and length tolerances.
- High strength and durability from 70,000 psi tensile strength and Rockwell B55 hardness, resisting wear and deformation under load.
- Easy installation in confined spaces using the low-profile socket head and 5/64" hex drive, providing secure torque application.
- Reliable thread engagement with 4-40 UNC coarse threads and Class 2A fit, reducing cross-threading risks and ensuring consistent fastening.
- Compliance with environmental regulations, meeting RoHS 3 and REACH standards for safe use in various industrial applications.
- Versatile right-hand threading for standard assembly processes, compatible with common UNC threaded components.
Professional Applications & Engineering Value
This 4-40 UNC low profile socket head shoulder screw is engineered to address critical alignment and pivot point challenges in precision assemblies. Made from 18-8 Stainless Steel, it offers excellent corrosion resistance, making it suitable for machinery, electronics, and automotive applications where exposure to moisture or chemicals is a concern. The 1-1/2" precise shoulder length provides a stable bearing surface, minimizing misalignment and reducing wear on moving parts. Its low profile socket head and hex drive allow for easy installation in tight spaces, while the coarse UNC threads ensure quick and secure fastening. This screw is ideal for jigs, fixtures, and rotational mechanisms, delivering reliable performance and extended service life in demanding industrial environments.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent engagement. Dimensions include a shoulder diameter of 1/8" with tight tolerance (-0.001" to 0") and shoulder length of 1-1/2" (tolerance 0" to 0.002"), ensuring precise assembly. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming its suitability for regulated industrial applications.
