S-91253A971 1-64 x 3/16" ASTM F835 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat 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
- Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments.
- Exceptional tensile strength of 130,000 psi ensures reliable performance under high-stress assembly conditions.
- Precise Class 3A thread fit guarantees secure, vibration-resistant fastening with minimal risk of loosening.
- Fully threaded coarse UNC design enables rapid installation and strong holding power in various materials.
- Hex drive compatibility (0.050") allows for high-torque application with standard tools, reducing assembly time.
- Flat head profile with 82° countersink provides a flush, low-profile finish for streamlined assemblies.
- Compliance with ASTM F835, RoHS 3, and REACH ensures material safety and meets rigorous industry standards.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 1-64 UNC flat head screws address critical assembly challenges. The black-oxide alloy steel construction offers enhanced durability and corrosion resistance, ideal for machinery, automotive, and electronics where environmental factors threaten fastener integrity. The hex drive design facilitates efficient installation in confined spaces, while the coarse thread spacing and Class 3A fit ensure consistent clamping force, reducing the risk of thread stripping in soft materials. With a Rockwell C39 hardness and full threading, these screws provide reliable, long-term performance in high-vibration settings, minimizing maintenance needs and downtime.
Specification Summary & Compliance
This screw features a 1-64 UNC thread with Class 3A precision tolerance and coarse spacing for optimal engagement. Dimensions include a 3/16" length, 0.168" head diameter, and standard flat head profile. Manufactured to ASTM F835 specifications, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability for global industrial use.
