S-92944A135 5/16"-18 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 for long-lasting performance in harsh industrial environments.
- Exceptional alignment precision provided by the 1 1/4" shoulder with tight tolerances, ensuring accurate component positioning.
- High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications.
- Reliable thread engagement due to Class 3A fit and coarse UNC threads, enabling quick assembly and vibration resistance.
- Secure installation and removal using the 7/32" hex drive, offering superior torque transmission without cam-out.
- Optimized for countersunk mounting with an 82° flat head profile, providing a flush finish and reduced protrusion.
- Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries.
Professional Applications & Engineering Value
This 18-8 Stainless Steel Shoulder Screw is engineered to address critical alignment and durability challenges in industrial settings. The precision shoulder with a length of 1 1/4" and tight diameter tolerances ensures exact positioning in machinery, pivots, and rotating assemblies, minimizing wear and misalignment. The 5/16"-18 UNC coarse thread with Class 3A fit provides robust fastening in high-vibration environments, while the flat head with hex drive allows for efficient installation in confined spaces. Ideal for applications such as conveyor systems, automotive jigs, and electronic enclosures, it combines high tensile strength and corrosion resistance to extend equipment lifespan and reduce maintenance costs.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 3A fit for precise thread engagement. Dimensions include a shoulder diameter of 3/8" (tolerance: -0.004" to -0.002") and shoulder length of 1 1/4" (tolerance: -0.005" to 0.005"), ensuring consistent alignment. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting use in regulated industrial applications without hazardous substances.
