S-8077A731 8-32 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 316 stainless steel construction, ideal for harsh environments and extended service life.
- Enhanced durability and wear resistance from the black oxide finish, which also reduces light reflection.
- Precise alignment and secure component positioning ensured by the Class 3A thread fit and standard shoulder fit.
- High mechanical strength with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications.
- Secure, non-slip installation facilitated by the knurled socket head and 3/32" hex drive.
- Reliable performance in automated assembly due to the 8-32 UNC coarse thread and right-hand thread direction.
- Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable use.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical alignment and strength challenges in precision machinery. The 3/16" shoulder length with tight tolerances provides a stable pivot or bearing surface, preventing component misalignment in assemblies like rotating shafts, gears, and linkages. The black oxide finish on the socket head shoulder screw not only enhances corrosion resistance but also minimizes galling and seizing in high-stress environments. With its 8-32 UNC coarse thread and Class 3A fit, it ensures rapid, secure fastening in industrial equipment, automotive systems, and electronic enclosures, reducing assembly time and maintenance needs while offering long-term reliability.
Specification Summary & Compliance
The screw features a Class 3A thread fit for high precision, conforming to UNC thread standards. Key dimensional tolerances include a shoulder diameter of 3/16" with a tolerance of -0.004" to -0.002" and a shoulder length of 1 3/4" with a tolerance of -0.005" to 0.005". It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring adherence to environmental and safety regulations for industrial use.
