S-91512A150 8-32 x 1/2" Left-Hand-Thread Stainless Steel Hex-Drive Flat Head Screws
Left-Hand-Thread Stainless 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 18-8 Stainless Steel and Passivated finish, ideal for harsh industrial environments
- Exceptional tensile strength of 70,000 psi ensures reliable performance under high-stress applications
- Precise Class 3A thread fit provides secure, vibration-resistant connections in critical assemblies
- Left-hand UNC coarse threading offers specialized fastening solutions for reverse-rotation equipment
- Full threading along 1/2" length maximizes engagement depth and load distribution
- 82° countersink angle enables flush mounting for streamlined surfaces and reduced snagging
- Hex drive design allows for high-torque installation with standard industrial tools
Professional Applications & Engineering Value
This 8-32 UNC left hand thread flat head screw addresses critical engineering challenges in industrial settings where reverse-thread security is paramount. The 18-8 Stainless Steel construction combined with passivated surface treatment provides exceptional protection against chemical exposure and atmospheric corrosion, significantly extending service life in manufacturing equipment, marine components, and food processing machinery. The Class 3A thread fit ensures minimal backlash and superior vibration resistance in high-cycle applications, while the left-hand coarse threading prevents accidental loosening in rotating systems with counter-clockwise motion. With full threading along its entire length and 82° countersink profile, this fastener delivers maximum clamping force and seamless surface integration for precision assemblies requiring both structural integrity and aesthetic cleanliness.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit precision and UNC coarse thread specifications. This flat head screw features 8-32 thread size with left-hand direction and maintains dimensional accuracy per industrial requirements. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets.
