S-90271A593 5/16"-18 x 2 1/2" ASME B18.6.3 Steel Truss Head Slotted Screws
Steel Truss Head Slotted 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 zinc-plated steel construction, extending service life in harsh industrial environments
- Enhanced load distribution from the wide rounded truss head design, reducing surface pressure and material damage
- High tensile strength rating of 60,000 psi ensures reliable performance in demanding heavy-duty applications
- Rockwell B69 hardness provides excellent durability and resistance to wear during installation and use
- Coarse UNC threading with Class 2A fit enables faster installation and better vibration resistance
- Partial threading design allows for precise clamping force control in assembly operations
- Full compliance with ASME B18.6.3 standards guarantees consistent quality and interchangeability
Professional Applications & Engineering Value
These zinc-plated steel rounded truss head screws deliver exceptional engineering value for industrial applications requiring both corrosion resistance and structural integrity. The combination of 60,000 psi tensile strength and Rockwell B69 hardness ensures reliable performance in heavy machinery, construction equipment, and transportation applications where vibration resistance is critical. The wide truss head design distributes clamping force over a larger surface area, preventing damage to softer materials while the UNC coarse threading provides superior grip in various substrates. The partial threading allows engineers to precisely control engagement depth, making these 5/16"-18 screws ideal for assemblies requiring specific clamp load characteristics without compromising joint security.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerance for consistent performance. Features 5/16"-18 UNC coarse threads with minimum thread length of 1½" on a 2½" overall length. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The zinc-plated steel construction meets industry standards for corrosion protection while maintaining the specified mechanical properties.
