S-90357A159 1/2"-13 x 3/4" Alloy Steel Ultra-Low-Profile Socket Head Screws
Alloy Steel Ultra-Low-Profile Socket Head 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
- Exceptional strength and durability with 140,000 psi tensile strength and Rockwell C32 hardness for reliable performance in demanding applications.
- Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in harsh industrial environments.
- Precise thread engagement with Class 3A fit and UNC coarse threads ensuring secure, vibration-resistant connections.
- Space-saving low-profile design featuring an ultra-low socket head for applications with limited clearance.
- Easy installation and removal using a standard 1/4" hex drive for efficient assembly and maintenance.
- Full thread coverage along the entire 3/4" length for maximum grip and load distribution.
- Compliance with environmental regulations including RoHS 3 and REACH, making them suitable for global industrial use.
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these black-oxide alloy steel socket head cap screws address critical engineering challenges such as vibration loosening and corrosion. The Class 3A thread fit and UNC coarse threads provide superior clamping force and resistance to dynamic loads, making them ideal for machinery, automotive assemblies, and construction equipment. The ultra-low socket head profile allows installation in confined spaces without compromising strength, while the black-oxide surface treatment enhances durability against moisture and chemicals. These precision fasteners ensure long-term reliability in high-stress environments, reducing maintenance costs and downtime.
Specification Summary & Compliance
This socket head cap screw features a 1/2"-13 UNC thread with Class 3A precision fit and length tolerance of -0.005" to 0.005". Manufactured from alloy steel with a black-oxide finish, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental safety and suitability for industrial use worldwide.
