S-90778A178 8-32 x 3/16" ASME B18.3 Set Screws
Set 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 construction, ideal for harsh environments and extended service life
- Exceptional thread engagement and holding power provided by the UNC Class 3A fit, ensuring a secure and reliable fastening
- Optimal torque transmission and anti-tampering from the 5/64" hex drive, allowing for high installation force in confined spaces
- Enhanced grip and component positioning with the 118° cone point, which bites into surfaces to prevent shifting and loosening
- High mechanical strength and durability from the Rockwell B80 hardness, resisting wear and deformation under load
- Simplified installation and removal with right-hand coarse threads, speeding up assembly and maintenance processes
- Guaranteed quality and reliability through compliance with ASME B18.3 standards, RoHS 3, and REACH regulations
Professional Applications & Engineering Value
This 8-32 UNC Class 3A set screw is engineered to address critical challenges in industrial assembly, where vibration, corrosion, and space constraints are common. The 316 Stainless Steel material offers excellent resistance to chemicals and moisture, making it suitable for marine, chemical processing, and food industry applications. Its headless design and hex drive allow for flush mounting in tight spaces, while the coarse thread and 118° cone point provide maximum bite and resistance to loosening under dynamic loads. This combination ensures reliable performance in securing collars, gears, and pulleys on shafts, reducing maintenance needs and downtime.
Specification Summary & Compliance
This set screw adheres to precise dimensional standards, including a Class 3A thread fit for high precision and a thread size of 8-32 UNC with a coarse spacing. It is manufactured in compliance with ASME B18.3 specifications and meets environmental regulations such as RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it is free from hazardous substances and safe for various industrial uses.
