S-91870A752 1/4"-20 x 3/4" ASME B18.3 Tamper-Resistant Torx Plus Stainless Steel Flat Head Screws
Tamper-Resistant Torx Plus Stainless Steel Flat Head 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 tamper resistance with Torx Plus IPR30 drive for enhanced security in public or restricted access applications
- Excellent corrosion resistance thanks to 18-8 stainless steel construction and passivated finish for long-term durability in harsh environments
- High-strength performance with 70,000 psi tensile strength and Rockwell B70 hardness to withstand heavy loads and vibration
- Precise thread engagement with Class 3A fit and UNC coarse threading for reliable fastening and reduced installation time
- Optimal flush mounting with standard 82° countersink angle and flat head design for smooth surface finishes
- Full regulatory compliance meeting ASME B18.3 specifications, RoHS 3, and REACH standards for global industrial use
- Complete thread coverage along the 3/4" length ensures maximum grip and load distribution in various materials
Professional Applications & Engineering Value
Engineered for demanding environments, these 18-8 stainless steel flat head screws combine security and durability where it matters most. The tamper-resistant Torx Plus drive prevents unauthorized access in public infrastructure, electrical enclosures, and machinery guards, while the passivated finish enhances corrosion resistance in outdoor or chemical-exposed settings. With UNC coarse threads and Class 3A fit, installation is swift and secure, reducing assembly time in manufacturing and maintenance operations. The 82° countersink ensures a flush fit for safety and aesthetics in automotive, aerospace, and construction applications, providing reliable performance under vibration and load stresses.
Specification Summary & Compliance
This screw features precision 1/4"-20 UNC coarse threads with Class 3A thread fit for tight tolerances and reliable engagement. Manufacturing adheres to ASME B18.3 specifications, ensuring consistent quality and dimensional accuracy. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting environmental and safety standards for industrial use worldwide.
