S-91266A256 10-32 x 1" ASTM F835 Alloy Steel Thread-Locking Hex Drive Flat Head Screws
Alloy Steel Thread-Locking Hex Drive Flat Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Permanent vibration resistance with nylon patch thread locker that maintains secure locking from -65° to 250°F
- Superior strength and durability with 130,000 psi tensile strength and Rockwell C39 hardness for heavy-duty applications
- Precise thread engagement with Class 3A thread fit ensuring reliable fastening in critical assemblies
- Corrosion-resistant black-oxide finish on alloy steel for enhanced protection in industrial environments
- Optimized head design with standard 82° countersink angle for flush mounting and clean aesthetics
- Easy installation and removal with 1/8" hex drive providing positive torque transmission
- Full thread coverage along the 1" length for maximum grip and load distribution
Professional Applications & Engineering Value
These 10-32 UNF flat head screws with nylon patch locking technology solve critical vibration-induced loosening problems in machinery, automotive, and aerospace assemblies. The black-oxide alloy steel construction provides excellent corrosion resistance while maintaining the 130,000 psi tensile strength required for structural applications. The fine UNF threads with Class 3A fit ensure precise engagement in tapped holes, preventing cross-threading and ensuring consistent clamp load. The combination of fully threaded design and 82° countersink angle allows for flush mounting in precision equipment where space constraints and aesthetic requirements are critical. These screws deliver reliable performance in temperature-cycling environments from -65° to 250°F, making them ideal for engine components, electronic enclosures, and industrial machinery subject to thermal expansion and vibration.
Specification Summary & Compliance
These screws feature 10-32 UNF fine threads with Class 3A thread fit for precision engagement and are fully threaded along the 1" length. Manufacturing complies with ASTM F835 specifications, ensuring consistent quality and performance. The products are RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety standards for industrial use.
