S-91263A581 3/8"-16 x 5/8" ASTM F835 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional tensile strength of 130,000 psi ensures reliable performance in high-stress industrial applications
- Superior corrosion resistance with zinc-plated alloy steel construction for extended service life in harsh environments
- Precision Class 3A thread fit provides secure fastening with minimal play and vibration resistance
- 82° countersink angle enables flush mounting for clean, professional installations
- Hex drive design with 7/32" drive size allows for high-torque installation and removal
- Full threading along the entire 5/8" length ensures maximum grip and holding power
- Rockwell C39 hardness maintains thread integrity and prevents stripping during repeated use
Professional Applications & Engineering Value
These 3/8"-16 UNC flat head screws deliver critical engineering solutions for demanding industrial applications. The zinc-plated alloy steel construction provides superior corrosion protection while maintaining the 130,000 psi tensile strength required for structural assemblies and heavy machinery. The Class 3A thread fit ensures precise engagement with mating components, eliminating play in vibration-prone environments. The 82° countersink angle and flat head design create seamless surface finishes in metal fabrication, automotive components, and industrial equipment. These fully threaded screws with coarse thread spacing offer rapid installation and maximum pull-out resistance, making them ideal for time-sensitive production environments where reliability cannot be compromised.
Specification Summary & Compliance
Manufactured to exacting standards with UNC coarse thread profile and Class 3A thread fit for superior dimensional accuracy. The 5/8" length and 0.781" head diameter provide optimal fastening geometry. Complies with ASTM F835 specifications for mechanical properties and performance requirements. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards, ensuring safe use across global industrial markets.
