S-90124A314 1/4"-20 x 1" ASME B18.2.1, SAE J429 Steel Wire-Lockable Hex Head Screws
Steel Wire-Lockable Hex 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 tensile strength of 120,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure
- Durable black-oxide steel construction provides enhanced corrosion resistance for longer service life in industrial environments
- Grade 5 classification with Rockwell C25 hardness delivers optimal balance of strength and toughness for heavy-duty fastening requirements
- Full UNC coarse threading with Class 2A fit enables quick installation and secure holding power in various materials
- External hex drive design allows for high-torque application using standard tools, improving installation efficiency
- ASME B18.2.1 compliance guarantees dimensional accuracy and interchangeability with other standard components
- RoHS 3 certification ensures environmental compliance for use in regulated industries and global markets
Professional Applications & Engineering Value
These Grade 5 black-oxide steel hex head screws deliver critical engineering solutions for industrial applications where vibration resistance and structural integrity are paramount. The combination of 120,000 psi tensile strength and Rockwell C25 hardness provides exceptional load-bearing capacity while maintaining necessary ductility to prevent brittle fracture. The fully threaded UNC coarse pattern with Class 2A fit ensures rapid assembly and superior grip in metal, wood, and composite materials, making these fasteners ideal for machinery assembly, structural frameworks, and equipment manufacturing. The black-oxide finish offers corrosion protection in moderate environments, while the external hex drive accommodates high-torque applications common in maintenance and production settings.
Specification Summary & Compliance
This 1/4"-20 x 1" hex head screw features precise Class 2A thread fit tolerances and UNC coarse threading manufactured to ASME B18.2.1 specifications. The fastener meets SAE J429 Grade 5 mechanical properties including 120,000 psi tensile strength and Rockwell C25 hardness. Compliance with RoHS 3 (2015/863/EU) ensures environmental safety standards are maintained for industrial use across regulated markets.
