S-95955A270 8-32 x 1/2" Left-Hand-Thread Stainless Steel Button Head Hex-Drive Screws
Left-Hand-Thread Stainless Steel Button Head Hex-Drive 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 corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
- Reliable reverse-threading performance using left-hand UNC threads for specialized assembly applications
- Superior mechanical strength with 80,000 psi tensile strength and Rockwell B85 hardness for heavy-duty use
- Precise Class 2A thread fit ensuring consistent engagement and vibration resistance in coarse-threaded assemblies
- Secure hex drive installation with 3/32" drive size providing positive torque transmission and reduced cam-out risk
- Low-profile rounded head design offering smooth surface finish and reduced snagging in confined spaces
- Full regulatory compliance meeting RoHS 3 and REACH standards for global industrial applications
Professional Applications & Engineering Value
These 8-32 UNC left-hand threaded screws deliver critical engineering solutions where reverse-direction fastening is required for safety-critical assemblies. The 18-8 Stainless Steel composition provides excellent corrosion resistance in manufacturing equipment, marine components, and food processing machinery. The coarse thread spacing combined with Class 2A fit ensures rapid installation and reliable performance in high-vibration environments. The rounded button head profile with hex drive offers both aesthetic appeal and practical installation advantages, while the full threading along the 1/2" length maximizes grip strength. These characteristics make them ideal for maintenance applications, rotating machinery, and specialized industrial equipment where left-hand threading prevents accidental loosening during operation.
Specification Summary & Compliance
This fastener features 8-32 UNC left-hand threads with Class 2A fit tolerance ensuring precision threading compatibility. The coarse thread spacing provides optimal engagement in various materials. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and material restrictions adherence. Mechanical properties include 80,000 psi tensile strength and Rockwell B85 hardness meeting industrial performance requirements for rounded head screws in demanding applications.
