S-95289A036 1/4"-20 x 1/2" 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 from 18-8 stainless steel construction, ideal for harsh industrial environments
- Precise thread engagement with Class 3A fit ensures reliable, vibration-resistant fastening in demanding applications
- Extended tip design (0.134" length) provides enhanced grip and prevents component slippage
- High durability with Rockwell B80 hardness maintains structural integrity under repeated use
- Easy installation and removal with 1/8" hex drive for efficient maintenance operations
- Coarse UNC threading enables quick assembly and superior holding power in various materials
- Headless design allows for flush mounting in space-constrained applications
Professional Applications & Engineering Value
This hex headless set screw delivers exceptional engineering value in precision assembly applications where space optimization and reliable positioning are critical. The 18-8 stainless steel composition provides excellent corrosion resistance for machinery exposed to moisture, chemicals, or outdoor elements. The extended tip design with controlled diameter tolerance ensures maximum contact surface area, preventing component rotation in pulleys, gears, and collars. With its Class 3A thread fit and coarse UNC threading, this fastener maintains consistent clamping force in high-vibration environments common in manufacturing equipment, automotive systems, and industrial machinery. The headless configuration allows for seamless integration where protruding fasteners would interfere with moving components or require streamlined profiles.
Specification Summary & Compliance
This set screw features precision 1/4"-20 UNC coarse threading with Class 3A thread fit for superior dimensional accuracy. Manufacturing specifications comply with ASME B18.3 standards for consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. Critical dimensions include a total length of 1/2" with extended tip measuring 0.134" length and 0.156" diameter, manufactured within specified tolerance ranges for reliable performance.
