S-91205A357 10-32 x 2 1/2" ASME B18.3, ASTM A574 Alloy Steel Thread-Locking Socket Head Screws
Alloy Steel Thread-Locking Socket 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
- Secure vibration resistance with permanent nylon patch thread locker that maintains integrity from -70°F to 250°F
- Exceptional tensile strength of 170,000 psi for heavy-duty applications requiring reliable load-bearing capacity
- Precise Class 3A thread fit ensures consistent engagement and reduces cross-threading risks in assembly operations
- Corrosion-resistant black-oxide alloy steel construction enhances durability in demanding industrial environments
- Optimized partial threading design provides unthreaded shank strength where full threads aren't required
- Standard hex drive compatibility with 5/32" drive size enables efficient installation with common tools
- Rockwell C37 hardness rating delivers superior wear resistance and long-term performance reliability
Professional Applications & Engineering Value
These 10-32 UNF socket head cap screws with nylon patch locking technology solve critical vibration-induced loosening problems in machinery, automotive, and aerospace assemblies. The fine thread configuration provides superior clamping force distribution while the black-oxide alloy steel construction withstands harsh operating conditions. Engineers specify these partially threaded fasteners where precise thread engagement length is crucial, eliminating the need for additional locking components. The combination of 170,000 psi tensile strength and temperature-stable thread locker makes these industrial fasteners ideal for applications subject to dynamic loads and thermal cycling, ensuring maintained clamp load through extreme service conditions.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit precision for superior engagement. The UNF fine thread pattern (10-32) meets standardized requirements for industrial applications. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Material certification includes ASTM A574 alloy steel with Rockwell C37 hardness and verified 170,000 psi tensile strength.
