S-90121A546 1/4"-20 x 1 1/2" ASME B18.2.1 Stainless Steel Wire-Lockable Hex Head Screws
Stainless 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
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity and structural integrity in demanding applications
- Rockwell B70 hardness provides excellent wear resistance and durability against mechanical stress
- External hex drive and hex head design allows for easy installation and removal with standard tools, reducing assembly time
- Class 2A thread fit with UNC coarse threading offers consistent engagement and vibration resistance in various materials
- Partial threading enables precise clamping force control and secure fastening in specific joint designs
- Compliance with ASME B18.2.1 and RoHS 3 guarantees consistent quality, safety, and environmental standards
Professional Applications & Engineering Value
This 1/4"-20 UNC hex head screw is engineered to address critical challenges in industrial settings where corrosion resistance and mechanical reliability are paramount. The 18-8 stainless steel material combats rust and chemical exposure, making it suitable for outdoor equipment, marine hardware, and food processing machinery. Its coarse thread design and Class 2A thread fit ensure quick assembly and secure fastening in metals and plastics, reducing the risk of loosening under vibration. With a tensile strength of 70,000 psi and external hex drive, it provides robust performance in structural applications, automotive assemblies, and heavy-duty machinery, minimizing downtime and maintenance costs.
Specification Summary & Compliance
This screw adheres to Class 2A thread fit tolerances and UNC coarse thread standards, ensuring precise dimensional accuracy. It meets ASME B18.2.1 manufacturing specifications for consistent quality and performance. Additionally, it is RoHS 3 (2015/863/EU) compliant, confirming the absence of hazardous substances for safe use in various industries.
