S-90291A846 1-72 ASME B18.3 Set Screws
Set Screws
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Basic Information
Head Parameters
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
Installation & Application
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Key Features & Benefits at a Glance
- Superior mar-free fastening with non-marring nylon 6/6 plastic tip that protects delicate surfaces and components
- Exceptional vibration resistance and reliable locking performance in demanding applications from -50° to 250°F
- Precise Class 3A thread fit ensures tight tolerances and secure positioning in critical assemblies
- Excellent corrosion resistance thanks to durable 18-8 stainless steel construction for long service life
- Space-saving headless design with hex drive allows for flush installation in confined spaces
- Consistent mechanical performance with Rockwell B80 hardness providing optimal strength and durability
- Industry-standard compliance meeting ASME B18.3 specifications for reliable, interchangeable components
Professional Applications & Engineering Value
This 1-72 UNF fine thread set screw with nylon tip delivers critical engineering solutions where surface protection and vibration resistance are paramount. The 18-8 stainless steel construction provides excellent corrosion resistance in harsh environments, while the soft nylon 6/6 plastic tip prevents damage to precision-machined components and shafts. The headless hex drive design enables flush mounting in space-constrained applications, making it ideal for precision instruments, optical equipment, and electronic enclosures where reliable positioning without surface damage is essential. The fine UNF threads with Class 3A fit ensure precise adjustment and secure fastening in critical assemblies requiring minimal backlash and maximum reliability.
Specification Summary & Compliance
This precision fastener features 1-72 UNF fine threads with Class 3A thread fit for superior dimensional accuracy. Manufactured to ASME B18.3 standards, the set screw maintains consistent quality and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in various industrial applications. Additional specifications include right-hand thread direction, 0.035" hex drive size, and 3/16" length for precise engineering applications requiring reliable fastening solutions.
