S-91266A148 6-32 x 1/2" ASTM F835 Alloy Steel Thread-Locking Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking with nylon patch thread locker prevents loosening under dynamic loads, maintaining joint integrity.
• Exceptional tensile strength of 130,000 psi ensures reliable performance in high-stress industrial applications.
• Corrosion-resistant black-oxide finish on alloy steel enhances durability and provides a professional appearance.
• Precise Class 3A thread fit guarantees smooth installation and secure mating with nuts or tapped holes.
• Wide temperature tolerance from -65° to 250°F allows use in diverse environmental conditions without performance loss.
• Hex drive design enables high-torque installation with standard tools, reducing assembly time and slippage risk.
• Full UNC coarse threading ensures rapid engagement and strong holding power in various materials.

Professional Applications & Engineering Value

Engineered for demanding industrial fastening, these black-oxide alloy steel flat head screws address critical challenges in machinery assembly, electronic enclosures, and automotive components. The nylon patch thread locker effectively counters vibration-induced loosening, a common failure point in dynamic systems, while the 82° countersink angle provides a flush fit for streamlined designs. With fully threaded UNC coarse threads, installation is swift and secure, minimizing production downtime. The combination of high tensile strength and temperature resilience makes these hex drive screws ideal for applications where reliability under stress and thermal cycling is paramount, from heavy equipment to precision instruments.

Specification Summary & Compliance

This screw features Class 3A thread fit for precision tolerance, UNC coarse threading, and complies with ASTM F835 manufacturing standards. It is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations for global industrial use.