S-92198A553 1/4"-20 x 2 3/4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws
18-8 Stainless Steel Hex 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
- Exceptional corrosion resistance with 18-8 stainless steel construction for long-term reliability in harsh environments
- High tensile strength of 80,000 PSI ensures secure fastening in demanding industrial applications
- Rockwell B70 hardness provides superior wear resistance and durability under mechanical stress
- Partially threaded design allows for precise clamping force control and reduced thread galling
- External hex drive enables high-torque installation with standard tools for efficient assembly
- Class 2A thread fit ensures consistent engagement and reliable performance in UNC coarse threading
- Full regulatory compliance with ASME B18.2.1 standards and RoHS/REACH environmental requirements
Professional Applications & Engineering Value
These 1/4"-20 UNC hex head screws deliver critical performance advantages for industrial assembly applications where corrosion resistance and mechanical strength are paramount. The 18-8 stainless steel composition provides excellent protection against rust and chemical degradation, making them ideal for marine, food processing, and outdoor equipment applications. The partially threaded design with coarse UNC threading prevents loosening from vibration while allowing optimal clamp load distribution. With 80,000 PSI tensile strength and external hex drive compatibility, these screws withstand extreme mechanical stresses while enabling rapid installation with standard wrenches. The combination of Rockwell B70 hardness and precise Class 2A thread fit ensures consistent performance in high-cycle assembly operations, reducing maintenance requirements and downtime.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit with UNC coarse threading (1/4"-20) and partial threading extending 3/4" from the point. Manufactured to ASME B18.2.1 specifications with dimensional accuracy including 7/16" head width and 2-3/4" total length. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
