S-92198A550 1/4"-20 x 2" 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
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
- High tensile strength of 80,000 psi ensures reliable performance and prevents failure under heavy loads and vibration.
- External hex drive and hex head design allows for easy installation and high torque application with common tools.
- Coarse UNC threading (1/4"-20) provides faster assembly and reduced cross-threading risk compared to fine threads.
- Class 2A thread fit offers excellent interchangeability and consistent performance in standard nut and tapped hole applications.
- Partial threading allows for precise clamping force on specific unthreaded sections, improving joint stability.
- Full compliance with ASME B18.2.1, RoHS 3, and REACH guarantees material safety, environmental responsibility, and adherence to industrial standards.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, this 18-8 stainless steel hex head screw delivers exceptional durability and reliability. The UNC coarse thread design ensures rapid installation in machinery, structural frames, and equipment assembly, minimizing production downtime. Its 80,000 psi tensile strength and Rockwell B70 hardness provide robust resistance to shear and tensile stresses, making it suitable for heavy-duty fastening in construction, automotive, and manufacturing sectors. The partially threaded shank allows the unthreaded portion to act as a precise dowel, reducing stress concentration and improving alignment in bolted joints. Combined with corrosion-resistant properties, this screw offers long-term performance in environments exposed to moisture, chemicals, and temperature variations.
Specification Summary & Compliance
This screw adheres to Class 2A thread fit per UNC standards, ensuring dimensional accuracy and compatibility. Manufacturing and material specifications strictly follow ASME B18.2.1. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances and supporting environmental and workplace safety standards.
