S-91263A163 10-32 x 2" ASME B18.3 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 zinc-plated alloy steel construction for extended service life in demanding environments
- Exceptional load-bearing capacity with 130,000 psi tensile strength and Rockwell C39 hardness for reliable performance under high stress
- Precise thread engagement with Class 3A thread fit ensuring secure fastening and vibration resistance
- Optimized flush mounting with standard flat head profile and 82° countersink angle for seamless surface integration
- Enhanced installation efficiency with hex drive design providing superior torque transmission and reduced tool slippage
- Fine thread spacing delivering improved adjustment precision and superior holding power in thin materials
- Regulatory compliance assurance meeting ASME B18.3 and ASTM F835 standards for quality and safety
Professional Applications & Engineering Value
These 10-32 UNF flat head screws deliver critical engineering advantages in industrial applications where precision and reliability are paramount. The zinc-plated alloy steel construction provides essential corrosion protection for machinery, electrical enclosures, and outdoor equipment. The Class 3A thread fit ensures precise mating with threaded components, eliminating play and maintaining alignment in vibration-prone environments. With 130,000 psi tensile strength, these partially threaded screws offer optimal clamping force distribution, making them ideal for automotive assemblies, industrial machinery, and precision equipment where joint integrity cannot be compromised. The fine thread spacing provides superior holding power in thin-section materials commonly found in aerospace components and electronic chassis applications.
Specification Summary & Compliance
Manufactured to exacting Class 3A thread tolerances with UNF thread type and fine thread spacing. Complies with ASME B18.3 and ASTM F835 manufacturing specifications. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) requirements for hazardous substances. Features right-hand threading with standard flat head profile and 82° countersink angle for industry-standard applications.
