S-91306A250 3-48 x 3/16" 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 durability and corrosion resistance with zinc-plated alloy steel construction, ideal for harsh industrial environments.
- High tensile strength of 120,000 PSI ensures reliable performance under heavy loads and vibrations.
- Precise Class 3A thread fit provides superior engagement and reduces the risk of cross-threading during assembly.
- Coarse UNC threads offer faster installation and better performance in softer materials or where debris is present.
- Fully threaded design maximizes grip and holding power across the entire fastener length.
- Compact 1/16" hex drive and rounded button head allows for easy access in tight spaces and a low-profile, snag-resistant finish.
- Compliance with ASME B18.3, ASTM F835, RoHS 3, and REACH guarantees product reliability and environmental safety for global supply chains.
Professional Applications & Engineering Value
These 3-48 UNC rounded head screws are engineered from zinc-plated alloy steel to address common industrial challenges such as vibration loosening and corrosion. The coarse thread design ensures quick, secure fastening in applications like electronics enclosures, machinery assemblies, and automotive components, where Class 3A thread fit minimizes assembly errors. With a fully threaded shank and 120,000 PSI tensile strength, they provide consistent clamping force and resist shear forces in high-stress environments. The low-profile button head and 1/16" hex drive facilitate installation in confined spaces, making them a versatile choice for OEMs and maintenance teams seeking durable, compliant fasteners.
Specification Summary & Compliance
This product features precise Class 3A thread fit per UNC standards, with dimensions including 3/16" length and 0.099" thread diameter. Manufacturing adheres to ASME B18.3 and ASTM F835 specifications, ensuring dimensional accuracy and performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting sustainable and safe industrial use.
