S-91771A170 1-72 x 1/2" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws
Stainless Steel Phillips 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 corrosion resistance with passivated 18-8 stainless steel construction, ensuring longevity in harsh industrial environments
- Exceptional tensile strength of 80,000 psi provides reliable fastening performance under high-stress conditions
- Precision Class 2A thread fit guarantees smooth installation and secure connections in fine-thread applications
- 82° countersink angle and flat head design enables flush mounting for clean, professional finishes
- Phillips No. 0 drive compatibility offers familiar, efficient installation with standard tools
- Full threading along the 1/2" length ensures maximum grip and load distribution across the entire fastener
- Comprehensive regulatory compliance meets ASME B18.6.3, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 1-72 UNF flat head screws with fine threading provide critical solutions where space constraints and vibration resistance are paramount. The passivated 18-8 stainless steel construction delivers exceptional corrosion resistance in chemical processing, marine, and outdoor equipment applications. The 82° countersink angle ensures perfect flush mounting in precision assemblies, while the Phillips No. 0 drive maintains compatibility with standard installation tools. With 80000 psi tensile strength and Rockwell B80 hardness, these fasteners withstand extreme mechanical stresses in automotive, aerospace, and heavy machinery applications where reliability is non-negotiable.
Specification Summary & Compliance
Manufactured to exacting Class 2A thread fit tolerances with UNF fine threading (1-72) and right-hand thread direction. Fully compliant with ASME B18.6.3 manufacturing specifications, featuring standard flat head profile and 82° countersink angle. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use worldwide.
