S-91255A248 10-24 x 1 1/4" 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
- Superior corrosion resistance with Black-Oxide finish, extending service life in demanding industrial environments.
- Exceptional tensile strength of 120,000 psi for reliable, high-load fastening without failure.
- Precise Class 3A thread fit ensures tighter tolerances and secure mating for vibration-resistant assemblies.
- Fully threaded coarse UNC design provides faster installation and maximum grip in various materials.
- Durable Rockwell C39 hardness maintains thread integrity and drive features under repeated use.
- 1/8" hex drive with rounded button head offers streamlined aesthetics and easy access in confined spaces.
- Compliance with ASME B18.3 and ASTM F835 guarantees consistent quality and interchangeability.
Professional Applications & Engineering Value
Engineered for industrial applications where reliability is non-negotiable, these 10-24 UNC Class 3A Rounded Head Screws address critical challenges like vibration loosening and environmental exposure. The Black-Oxide Alloy Steel construction provides a robust barrier against oxidation, reducing maintenance in machinery, automotive, and electrical enclosures. The coarse thread and fully threaded design ensure rapid assembly and superior holding power in both soft and hard substrates, minimizing the risk of strip-out. With a 1/8" hex drive, installers benefit from secure tool engagement, reducing cam-out and enhancing efficiency in high-volume production lines. This combination of material strength, precise thread fit, and compliant surface treatment delivers long-term performance in rigorous fastening scenarios.
Specification Summary & Compliance
This screw features a 10-24 UNC coarse thread with Class 3A tolerance for precision fit, a length of 1-1/4", and a rounded button head with 1/8" hex drive. Manufactured from Alloy Steel with Black-Oxide finish, it meets ASME B18.3 and ASTM F835 specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are adhered to.
