S-91255A619 3/8"-16 x 1/2" ASTM F835 Steel Button Head Hex-Drive Screws
Steel Button Head Hex-Drive 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 tensile strength of 120,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
- Class 3A thread fit provides superior precision and tighter tolerances for secure, vibration-resistant assemblies in demanding environments.
- Black-oxide coating on alloy steel offers enhanced corrosion resistance and a durable finish, extending service life in harsh conditions.
- Fully threaded UNC coarse spacing allows for faster installation and improved grip in a wide range of materials, boosting assembly efficiency.
- 7/32" hex drive with rounded button head delivers easy tool engagement and a low-profile finish, minimizing snagging and improving safety.
- Rockwell C39 hardness ensures high wear resistance and durability, maintaining integrity under repeated use.
- Compliance with ASME B18.3 and ASTM F835 guarantees consistent quality and interoperability, meeting rigorous industry standards for reliability.
Professional Applications & Engineering Value
Engineered for heavy-duty industrial use, these Black-Oxide Alloy Steel Rounded Head Hex Screws address common challenges like vibration loosening and corrosion in machinery, automotive, and construction applications. The UNC coarse thread and Class 3A fit provide excellent holding power in coarse-grained materials, reducing the need for frequent maintenance. With a fully threaded design and 120,000 psi tensile strength, they ensure uniform load distribution and resist deformation under high stress. Ideal for assembly lines and equipment requiring RoHS and REACH compliance, these screws offer long-term reliability and ease of installation with a standard hex drive, making them a cost-effective solution for professional engineers and procurement specialists.
Specification Summary & Compliance
This screw features precise Class 3A thread fit with UNC coarse spacing, ensuring tight tolerances per ASME B18.3 and ASTM F835 standards. Dimensions include a 3/8"-16 thread size, 1/2" length, and 7/32" hex drive. It is manufactured from alloy steel with a black-oxide finish and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting environmentally conscious and safe industrial use.
