S-94035A135 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 and passivated finish, ideal for harsh industrial environments
- Exceptional mechanical stability with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing performance
- Precise component alignment ensured by tight shoulder diameter tolerance (-0.001" to 0") and controlled shoulder length (0" to 0.002" tolerance)
- Easy installation and removal with hex socket drive design requiring only 5/64" drive tool
- Secure fastening performance with Class 2A thread fit and UNC coarse threads providing vibration resistance
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for global manufacturing applications
- Versatile right-hand threading compatible with standard UNC 4-40 components and assemblies
Professional Applications & Engineering Value
This 4-40 UNC shoulder screw delivers critical engineering value in applications requiring precise mechanical positioning and rotational stability. The 18-8 stainless steel construction combined with passivated finish provides exceptional corrosion resistance for demanding environments including manufacturing equipment, precision instruments, and automated assemblies. The precisely machined 1/8" shoulder diameter with tight tolerances ensures exact component alignment while the 9/16" shoulder length maintains consistent spacing in rotating mechanisms and bearing applications. The hex socket drive enables secure installation in confined spaces, making these shoulder screws ideal for precision machinery where vibration resistance and dimensional accuracy are paramount.
Specification Summary & Compliance
Manufactured to exacting standards with Class 2A thread fit and UNC thread specifications. The shoulder features precise diameter tolerance of -0.001" to 0" and length tolerance of 0" to 0.002" for consistent performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications and electronic assemblies.
