S-90909A944 1/4"-20 x 1 1/2" Stainless Steel Flanged Button Head Hex-Drive Screws
Stainless Steel Flanged 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
- Exceptional corrosion resistance in harsh environments thanks to 316 stainless steel construction and passivated surface treatment
- Superior thread engagement and vibration resistance achieved through Class 3A thread fit and UNC coarse threading
- High-strength performance under load with 70,000 psi tensile strength and Rockwell B70 hardness rating
- Secure, slip-resistant installation provided by the 5/32" hex drive and wide button head design
- Enhanced load distribution and stability from the integrated flange and fully threaded shank
- Reliable compliance for regulated industries meeting RoHS 3 and REACH environmental standards
- Optimized for industrial durability with right-hand threading and rounded head profile for long service life
Professional Applications & Engineering Value
Engineered for demanding industrial environments, this 316 stainless steel rounded head screw delivers critical corrosion resistance where exposure to chemicals, moisture, or salt spray would compromise ordinary fasteners. The combination of Class 3A thread fit and UNC coarse threading ensures secure fastening in applications subject to vibration, while the flanged design provides superior load distribution without requiring separate washers. The 5/32" hex drive and wide button head profile enable high-torque installation in confined spaces, making these industrial screws ideal for machinery assembly, marine equipment, chemical processing systems, and food processing applications where reliability and regulatory compliance are paramount.
Specification Summary & Compliance
This 1/4"-20 x 1-1/2" screw features precision UNC coarse threading with Class 3A thread fit for superior dimensional accuracy. Manufactured from 316 stainless steel with passivated finish for enhanced corrosion protection. The fastener meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring environmental regulatory adherence for industrial applications worldwide.
