S-90910A491 1/4"-20 x 1/4" ASME B18.3, ASTM F835 Steel Button Head Torx Plus Screws
Steel Button Head Torx Plus 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 torque transmission with Torx Plus IP27 drive, reducing cam-out and tool wear for efficient assembly
- Enhanced corrosion resistance from zinc-plated alloy steel, extending service life in harsh industrial environments
- High-strength performance with 120,000 psi tensile strength and Rockwell C39 hardness for demanding applications
- Precise thread engagement with Class 3A UNC coarse threads, ensuring reliable fastening and vibration resistance
- Full threading design for maximum grip along the entire length, improving load distribution
- Rounded button head profile providing a low-profile, aesthetically clean finish while minimizing snagging
- Compliance with major standards including ASME B18.3 and ASTM F835, guaranteeing quality and interoperability
Professional Applications & Engineering Value
This 1/4"-20 Torx Plus rounded head screw is engineered to address critical challenges in industrial assembly, where high torque application and environmental durability are paramount. The zinc-plated alloy steel construction combats corrosion in manufacturing, automotive, and machinery sectors, while the Torx Plus IP27 drive system delivers exceptional torque transfer without slippage, reducing installation time and tool damage. With a fully threaded UNC coarse design and Class 3A thread fit, it ensures secure fastening in metals and plastics, preventing loosening under dynamic loads. Ideal for heavy-duty applications requiring 120,000 psi tensile strength, this fastener supports long-term reliability in structural and equipment assemblies, minimizing maintenance needs and downtime.
Specification Summary & Compliance
This product features precise Class 3A thread fit with UNC 1/4"-20 coarse threads and a right-hand thread direction, manufactured to ASME B18.3 and ASTM F835 specifications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions adherence for global industrial use.
