S-90807A135 3/8"-16 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 tensile strength of 140,000 psi ensures reliable performance under heavy loads, reducing the risk of fastener failure in demanding applications.
- Superior corrosion resistance from the black oxide finish prolongs service life and maintains integrity in harsh industrial environments.
- Precise Class 3A thread fit guarantees secure fastening with minimal backlash, ideal for assemblies requiring high accuracy and repeatability.
- Knurled head design provides improved grip during manual installation, enhancing ease of handling without compromising the socket drive.
- Robust alloy steel construction with Rockwell C32 hardness offers excellent wear resistance and durability for long-term use.
- Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global standards for industrial components.
- Coarse UNC threads facilitate quicker assembly and disassembly, saving time in maintenance and production cycles.
Professional Applications & Engineering Value
This 3/8"-16 UNC shoulder screw is engineered to address critical challenges in machinery and equipment assembly, where dimensional stability and high-strength fastening are paramount. The alloy steel material and black oxide finish work synergistically to resist corrosion and wear, making it suitable for automotive, aerospace, and heavy machinery applications. The precision shoulder diameter and length provide accurate alignment for rotating parts, reducing vibration and misalignment issues. With a Class 3A thread fit and coarse thread spacing, it ensures rapid installation and reliable performance in high-stress environments, minimizing downtime and maintenance costs.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for tight tolerances. Key dimensions include a thread diameter of 0.375", thread length of 1/2", shoulder diameter of 3/8" (tolerance: -0.004" to -0.002"), and shoulder length of 3/4" (tolerance: -0.005" to 0.005"). It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial use.
