S-90909A514 8-32 x 1/4" 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
- Superior corrosion resistance with 316 Stainless Steel and passivated finish, ideal for harsh or chemical-exposed environments.
- High-strength performance offering 70,000 psi tensile strength and Rockwell B70 hardness for reliable, long-term fastening under stress.
- Precision thread fit with Class 3A UNC coarse threads ensuring secure, vibration-resistant connections in industrial assemblies.
- Easy installation and removal using the 3/32" hex drive and flanged button head design, reducing tool slip and speeding up maintenance.
- Wide seating surface from the flanged, rounded head distributes clamping force evenly, minimizing surface damage.
- Full threading along the 1/4" length provides maximum grip and adjustability in tight spaces.
- Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries.
Professional Applications & Engineering Value
Engineered for demanding settings, these 8-32 UNC Class 3A rounded head screws excel in applications where corrosion resistance and mechanical reliability are critical. The 316 Stainless Steel composition, enhanced by a passivated finish, combats degradation from moisture, chemicals, and salt—making them ideal for marine, chemical processing, and outdoor equipment. The coarse UNC threads and Class 3A fit deliver superior holding power, reducing the risk of loosening under vibration in machinery, enclosures, or structural frames. With a flanged button head and hex drive, installation is swift and secure, minimizing assembly time while the fully threaded design ensures consistent engagement across the 1/4" length, providing versatile fastening solutions for OEM and MRO needs.
Specification Summary & Compliance
This screw adheres to UNC thread standards with a Class 3A thread fit for precise, tight-tolerance assemblies. Dimensions include 8-32 thread size, 1/4" length, and 0.359" flange diameter. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming its suitability for use in environments with strict regulatory requirements.
