S-91864A009 1-72 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
- Superior corrosion resistance with black-oxide coating, extending service life in demanding industrial environments
- Precise Class 3A thread fit ensures reliable, vibration-resistant fastening in critical applications
- Exceptional 170,000 psi tensile strength provides maximum load-bearing capacity for heavy-duty assemblies
- Rockwell C37 hardness rating maintains structural integrity under high-stress conditions
- Fine UNF thread profile delivers superior holding power and reduced loosening in precision equipment
- Standard hex socket drive allows for high-torque installation in confined spaces
- Full thread coverage along the 1/2" length enables flexible positioning and uniform stress distribution
Professional Applications & Engineering Value
These black-oxide alloy steel socket head cap screws address critical engineering challenges in precision manufacturing and heavy machinery. The Class 3A UNF fine threads provide exceptional clamp load retention, preventing joint failure in vibrating equipment while maintaining alignment in high-precision assemblies. The combination of 170,000 psi tensile strength and Rockwell C37 hardness ensures reliable performance in high-stress applications from automotive components to industrial robotics. The black-oxide surface treatment offers superior corrosion protection without compromising dimensional accuracy, making these socket head screws ideal for applications requiring both durability and precise fitment in challenging operating environments.
Specification Summary & Compliance
Manufactured to exact UNF thread standards with Class 3A thread fit for superior precision. Fully compliant with ASTM A574 specification for alloy steel socket head cap screws. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features right-hand thread direction, fully threaded design, and inch system measurements for consistent performance in industrial applications.
