S-8077A395 10-32 ASME B18.3 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, providing added protection against abrasion.
- Precise alignment and smooth rotation enabled by the 1/4" shoulder diameter with tight tolerances for reliable assembly.
- High-strength fastening with 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding applications.
- Secure, fine-thread engagement using 10-32 UNF threads with Class 3A fit, reducing the risk of loosening under vibration.
- Easy installation and removal with a hex socket drive and knurled head for improved grip and torque application.
- Compliance with industry standards including ASME B18.3, RoHS, and REACH, ensuring quality and environmental safety.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision assemblies, such as maintaining alignment in rotating machinery and supporting loads in high-performance applications. The black oxide finish not only enhances corrosion resistance but also minimizes friction, making it suitable for automotive, aerospace, and industrial equipment. The 10-32 UNF fine thread and Class 3A thread fit ensure tight, secure connections that resist vibration and shock, while the knurled head and hex drive facilitate quick, tool-friendly installation. Its robust tensile and shear strength provides reliable fastening in heavy-duty environments, reducing maintenance needs and downtime.
Specification Summary & Compliance
This shoulder screw adheres to ASME B18.3 specifications, with precise dimensions including a 1/4" shoulder diameter and 10-32 UNF thread in Class 3A fit for superior thread engagement. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. The manufacturing process maintains tight tolerances, such as shoulder diameter tolerance of -0.004" to -0.002", supporting consistent performance in regulated industries.
