S-91512A160 8-32 x 3/4" 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
- Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh environments.
- Superior mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for high-load applications without failure.
- Precise, secure fastening with Class 3A thread fit and UNC coarse thread spacing, minimizing loosening under vibration.
- Efficient installation and removal using the 3/32" hex drive, providing a firm grip and reducing tool slippage.
- Optimal flush mounting due to the standard flat head profile and 82° countersink angle, ideal for streamlined surfaces.
- Reliable reverse-thread operation with left-hand threading, perfect for specialized machinery requiring counter-rotational security.
- Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries.
Professional Applications & Engineering Value
These 8-32 UNC left-hand thread flat head screws are engineered to address critical industrial challenges, such as vibration-induced loosening and corrosive wear. Crafted from 18-8 stainless steel with a passivated finish, they resist rust and chemical degradation, extending service life in demanding settings like automotive assemblies, marine equipment, and food processing machinery. The fully threaded design and Class 3A thread fit ensure uniform load distribution and tight tolerances, while the left-hand thread direction provides a secure fastening solution for rotating components where standard threads may unscrew. This combination of high tensile strength and precise hex drive installation enhances operational safety and reduces maintenance downtime.
Specification Summary & Compliance
This screw adheres to UNC thread standards with a Class 3A thread fit for high precision, featuring an 8-32 thread size, coarse spacing, and full threading. Dimensions include a 3/4" length, 0.359" head diameter, and 82° countersink angle. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for industrial use.
