S-91785A550 1/4"-20 x 2" ASME B18.6.3 Stainless Steel Truss Head Slotted Screws
Stainless Steel Truss Head Slotted 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 and passivated finish, ideal for harsh industrial environments
- Enhanced load distribution through the wide rounded truss head design, reducing surface pressure and material damage
- High tensile strength of 100,000 psi ensures reliable performance in demanding mechanical applications
- Easy installation and removal with standard slotted drive and coarse UNC threading for quick assembly
- Precise Class 2A thread fit guarantees consistent engagement and vibration resistance in fastened joints
- Full threading along the 2" length provides maximum grip and adjustability in various material thicknesses
- Compliance with ASME B18.6.3, RoHS 3, and REACH ensures safety, environmental responsibility, and global acceptance
Professional Applications & Engineering Value
This 1/4-20 UNC fully threaded rounded truss head screw in 18-8 stainless steel addresses critical industrial challenges, including corrosion in chemical processing, marine, or outdoor settings. The passivated finish enhances surface durability, preventing rust and extending service life. Its coarse thread design allows for rapid installation in soft materials or where vibration loosening is a concern, while the truss head offers a low-profile, wide bearing surface that minimizes pull-through in sheet metal, plastics, or wood assemblies. With a Rockwell B100 hardness and high tensile strength, it provides dependable fastening in machinery, automotive, and structural applications, ensuring long-term reliability under stress.
Specification Summary & Compliance
This screw adheres to Class 2A thread fit for consistent dimensional accuracy and features 1/4"-20 UNC coarse threading with full threading along the 2" length. Manufactured in compliance with ASME B18.6.3 standards, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material quality for industrial use.
