S-90337A337 1/4"-20 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 and passivated finish, ideal for harsh industrial environments.
- Precise alignment and secure mounting thanks to the 3/8" shoulder diameter with a tight tolerance of -0.001" to 0", ensuring minimal play.
- High strength and durability with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under load.
- Easy and secure installation using the low-profile hex socket head, providing a flush fit and preventing cam-out.
- Wide compatibility with 1/4"-20 UNC coarse threads and Class 2A fit, ensuring easy assembly with standard components.
- Environmental and regulatory safety through RoHS 3 and REACH compliance, meeting strict industry standards.
- Optimized for repetitive use with a smooth head texture and right-hand thread direction for efficient manual or automated driving.
Professional Applications & Engineering Value
This precision shoulder screw is engineered to address critical alignment and durability challenges in industrial settings. Made from 18-8 stainless steel with a passivated finish, it resists corrosion and wear, extending service life in machinery, automotive, and electronics applications. The 3/8" shoulder diameter with precise tolerances ensures exact positioning for components like bearings, pulleys, or gears, reducing vibration and misalignment issues. The low-profile socket head allows for compact designs and secure torque application, while the UNC coarse threads facilitate quick assembly. Ideal for mounting and alignment tasks, this screw provides reliable performance where strength and accuracy are paramount.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent engagement. The shoulder features a diameter tolerance of -0.001" to 0" and length tolerance of 0" to 0.002", ensuring high precision. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for various industrial uses.
