S-91205A599 5/16"-24 x 1" 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
- Permanent vibration resistance with nylon patch thread locker that maintains secure fastening in dynamic environments
- Exceptional strength-to-weight ratio from alloy steel construction with 170,000 psi tensile strength for heavy-duty applications
- Precise thread engagement with Class 3A fit ensuring reliable performance in critical assemblies
- Wide temperature compatibility with locking effectiveness maintained from -70° to 250°F
- Superior corrosion protection through black-oxide surface treatment extending service life
- Optimized torque transmission via 1/4" hex drive design preventing tool slippage
- Regulatory compliance assurance meeting RoHS, REACH, and ASME standards for global applications
Professional Applications & Engineering Value
Engineered for demanding industrial locking fasteners applications, these socket head cap screws deliver exceptional reliability in high-vibration environments. The nylon patch locking mechanism provides permanent resistance to loosening while the black-oxide alloy steel construction offers superior strength and moderate corrosion resistance. The Class 3A thread fit ensures precise engagement in critical assemblies, while the fine thread spacing provides enhanced clamping force distribution. These fully threaded cap screws are ideal for machinery, automotive, and aerospace applications where high temperature thread locker performance and consistent clamping force are essential for operational safety and reduced maintenance intervals.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit precision. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations. Features UNF fine thread with 5/16"-24 sizing and 1" length. Material certification includes ASTM A574 alloy steel with Rockwell C37 hardness and 170,000 psi tensile strength. The nylon patch thread locker maintains performance across the specified temperature range of -70° to 250°F.
