S-91253A332 5/16"-24 x 5/8" 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
- Exceptional tensile strength of 130,000 PSI ensures reliable performance under high-stress industrial conditions
- Precision Class 3A thread fit provides superior engagement and vibration resistance in critical assemblies
- Black-oxide coating on alloy steel offers enhanced corrosion protection for extended service life
- 82° countersink angle with flat head design enables flush mounting for streamlined surfaces and improved aesthetics
- Rockwell C39 hardness rating maintains thread integrity and prevents stripping during repeated installations
- 3/16" hex drive system allows for secure tool engagement and efficient installation in confined spaces
- Full threading configuration ensures consistent clamping force distribution along the entire fastener length
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 5/16"-24 UNF flat head screws provide critical solutions where high tensile strength and vibration resistance are paramount. The black-oxide alloy steel construction combined with Class 3A thread fit addresses common failure points in machinery, automotive, and heavy equipment assemblies. The 82° countersink angle ensures perfect flush mounting while the fine UNF threading maintains secure fastening in high-vibration environments. These fully threaded screws with 3/16" hex drive offer superior installation efficiency and reliable performance in critical joint applications where fastener failure is not an option.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit precision and UNF fine threading (5/16"-24). Complies with ASTM F835 specifications for mechanical properties and dimensional requirements. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards. Features Rockwell C39 hardness and maintains dimensional accuracy per industrial fastener specifications for reliable performance in professional applications.
