S-91253A150 6-32 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 strength and durability with 130,000 psi tensile strength and Rockwell C39 hardness for reliable performance in demanding applications
- Superior corrosion resistance provided by black-oxide coating on alloy steel, extending service life in various industrial environments
- Precise Class 3A thread fit ensures secure fastening and vibration resistance in machinery and equipment assemblies
- Efficient hex drive installation with 5/64" drive size allowing for high torque application and reduced stripping risk
- Optimal flush mounting with standard 82° countersink angle and flat head design for smooth surface finishes
- Reliable coarse threading with UNC thread form providing quick assembly and disassembly in industrial maintenance
- Full threading coverage along the 5/8" length ensures maximum grip strength and load distribution
Professional Applications & Engineering Value
These 6-32 UNC flat head screws deliver critical engineering solutions where high tensile strength and precise flush mounting are paramount. The black-oxide alloy steel construction provides superior corrosion protection for machinery, automotive, and industrial equipment exposed to harsh environments. The hex drive design enables secure installation in confined spaces while maintaining torque integrity. With Class 3A thread fit and coarse UNC threading, these screws prevent loosening under vibration and allow for rapid assembly in production lines. The fully threaded 5/8" length ensures consistent clamping force across the entire engagement area, making them ideal for metal-to-metal fastening in structural applications where reliability cannot be compromised.
Specification Summary & Compliance
Manufactured to precision Class 3A thread tolerances with UNC coarse thread form and consistent 6-32 threading. Complies with ASME B18.3 and ASTM F835 manufacturing specifications for dimensional accuracy and performance. Meets environmental standards including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance for restricted substance control. Features standard 82° countersink angle and right-hand thread direction for universal industrial compatibility.
