S-91773A066 1-72 x 1/4" ASME B18.6.3 Stainless Steel Round Head Phillips Screws
Stainless Steel Round Head Phillips 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 construction and passivated finish, ensuring longevity in harsh industrial environments
- Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for reliable performance under high-stress applications
- Precise thread engagement through Class 2A thread fit and UNF fine threading, providing secure fastening and vibration resistance
- Optimized drive efficiency with No. 0 Phillips drive and rounded head design for easy installation and reduced cam-out risk
- Full thread coverage along the 1/4" length ensures maximum grip and load distribution across connected components
- Regulatory compliance with ASME B18.6.3 standards, RoHS 3, and REACH for safe use in regulated industries
- Versatile inch-system compatibility ideal for precision machinery and equipment requiring fine-thread fasteners
Professional Applications & Engineering Value
This 1-72 UNF rounded head screw delivers critical engineering value in applications where fine thread precision and corrosion resistance are paramount. The 18-8 stainless steel material combined with passivated finish effectively counters chemical exposure and oxidation in demanding environments like electronics assembly, precision instruments, and marine equipment. The Phillips drive with No. 0 size ensures efficient torque transfer while minimizing strip-out, and the fully threaded design maximizes holding power in thin materials. Engineered to ASME B18.6.3 specifications, this screw solves common industrial pain points including thread galling, premature failure, and compliance challenges in regulated sectors.
Specification Summary & Compliance
This screw maintains Class 2A thread fit per UNF standards with fine thread spacing, ensuring precise dimensional accuracy. Manufacturing adheres to ASME B18.6.3 specifications for consistent quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and restricted substance-controlled applications.
