S-8077A146 2-56 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 and black oxide finish, ideal for harsh industrial environments.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable, heavy-duty fastening.
- Precise thread engagement with Class 3A fit and UNC coarse threads, ensuring secure and vibration-resistant connections.
- Easy installation and removal using a standard 5/64" hex drive and knurled socket head for improved tool grip.
- Accurate alignment and spacing provided by the 1 1/4" shoulder with tight diameter and length tolerances.
- Compliance with environmental standards including RoHS 3 and REACH, meeting global regulatory requirements.
- Durable performance backed by Rockwell B79 hardness, maintaining integrity under repeated use.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision assemblies, such as maintaining component alignment and resisting loosening under dynamic loads. The black oxide finish enhances corrosion resistance, making it suitable for applications in marine, chemical processing, and outdoor equipment where moisture and chemicals are present. With a 1 1/4" shoulder length and Class 3A thread fit, it provides exact positioning and secure fastening in machinery, pivots, and rotating parts. The UNC coarse threads and right-hand thread direction facilitate quick assembly, while the high tensile and shear strengths ensure long-term reliability in demanding industrial shoulder screw applications, reducing maintenance needs and downtime.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for precise tolerance. Dimensions include a shoulder diameter of 3/32" (tolerance: -0.004" to -0.002") and shoulder length of 1 1/4" (tolerance: -0.005" to 0.005"), ensuring consistent performance. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting environmentally responsible sourcing and use in global markets.
