S-94361A356 3/8"-24 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 durability with alloy steel construction and Rockwell C32 hardness for long service life in high-stress environments
- Superior corrosion resistance from black oxide finish, protecting against rust in humid or demanding industrial conditions
- Precise alignment and secure positioning with 1/2" shoulder diameter and controlled tolerances for stable component mounting
- Reliable thread engagement through Class 3A UNF fine threads, minimizing loosening under vibration and ensuring consistent clamping force
- Easy installation and removal with hex socket drive and knurled head for improved grip during manual or tool-assisted assembly
- High load-bearing capacity with 140,000 psi tensile strength, suitable for heavy-duty mechanical applications
- Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use across global markets
Professional Applications & Engineering Value
This alloy steel shoulder screw is engineered to address critical alignment and durability challenges in industrial machinery. The black oxide finish provides a protective layer that reduces friction and resists corrosion, extending component life in harsh environments. With a 1/2" shoulder diameter and fine UNF thread in Class 3A fit, it ensures precise location and secure fastening in assemblies subject to vibration, such as rotating shafts, gears, and linkages. The hex socket drive and knurled head facilitate quick installation in confined spaces, reducing assembly time while maintaining high tensile strength for demanding applications like automotive, aerospace, and heavy equipment manufacturing.
Specification Summary & Compliance
This shoulder screw adheres to UNF thread standards with Class 3A fit for tight tolerances and reliable performance. Shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005" for precision alignment. It is manufactured to meet RoHS 3 (2015/863/EU) with exemption 6(a) and is REACH (EC 1907/2006) compliant, ensuring environmental safety and regulatory acceptance in industrial applications.
