S-92949A544 1/4"-20 x 1 1/4" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws
Stainless Steel Button Head Hex-Drive 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 and passivated finish, ideal for harsh environments
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity in demanding applications
- Precise Class 3A thread fit delivers secure, vibration-resistant connections with minimal risk of loosening
- Hex drive design (5/32") provides excellent torque transmission and easy installation with standard tools
- Fully threaded UNC coarse thread offers faster assembly and stronger holding power across the entire length
- Rounded button head profile presents a smooth, low-profile finish that reduces snagging and improves safety
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees quality, safety, and environmental standards are met
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these 1/4"-20 x 1-1/4" stainless steel rounded head screws address critical assembly challenges. The 18-8 stainless steel material combined with a passivated finish significantly enhances corrosion resistance, making them suitable for outdoor, marine, or chemical-exposed settings where durability is paramount. The hex drive style ensures maximum torque application without cam-out, reducing installation time and tool wear. With fully threaded UNC coarse threads and a Class 3A thread fit, these screws provide superior grip and vibration resistance in machinery, automotive, and construction assemblies, minimizing maintenance and downtime.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC coarse thread with Class 3A precision fit for high-strength, reliable fastening. It is manufactured in compliance with ASME B18.3 specifications, ensuring dimensional accuracy and performance consistency. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and safety regulations for hazardous substances.
