S-91251A059 0-80 x 1/2" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket 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 170,000 psi ensures reliable performance in high-stress applications
- Precision Class 3A thread fit provides superior engagement and vibration resistance in fine-thread assemblies
- Black-oxide coating on alloy steel offers enhanced corrosion resistance for extended service life
- Rockwell C37 hardness rating maintains dimensional stability under heavy loads
- Hex socket drive design enables high-torque installation in confined spaces
- Full threading along 1/2" length allows for maximum adjustment and secure fastening
- Comprehensive compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety
Professional Applications & Engineering Value
These 0-80 UNF socket head cap screws deliver critical performance advantages in precision engineering applications where space constraints and vibration resistance are paramount. The fine thread configuration with Class 3A tolerance provides superior clamping force distribution, making them ideal for electronic enclosures, precision instruments, and aerospace components. The black-oxide surface treatment on alloy steel substrate creates a protective barrier against corrosion while maintaining the 170,000 psi tensile strength required for demanding industrial environments. The hex socket drive design allows for efficient installation in confined assemblies where traditional wrench access is limited, reducing assembly time while ensuring proper fastener tension.
Specification Summary & Compliance
This socket head cap screw features precision 0-80 UNF fine threads with Class 3A thread fit for superior dimensional accuracy. Manufacturing complies with ASTM A574 specification for alloy steel socket head cap screws. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety. The combination of Rockwell C37 hardness and 170,000 psi tensile strength ensures consistent performance in critical fastening applications.
