S-91375A648 3/8"-24 x 1" ASME B18.3, ASTM F912 Set Screws
Set Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with black-oxide coating for extended service life in demanding environments
- Exceptional thread precision with Class 3A fit ensuring reliable, vibration-resistant fastening in critical applications
- High-strength performance from Rockwell C45 hardened alloy steel, preventing deformation under heavy loads
- Secure installation and removal with hex drive design providing maximum torque transfer without stripping
- Enhanced grip and positioning with cup point tip that bites into materials for permanent component alignment
- Industry-standard compliance meeting ASME B18.3 specifications for consistent quality and interchangeability
- Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated industries
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical engineering advantages for industrial applications where vibration resistance and permanent positioning are paramount. The 3/8"-24 UNF fine threads with Class 3A precision fit eliminate backlash in precision machinery, while the cup point design creates permanent seating in shafts, collars, and gears. The Rockwell C45 hardness ensures the hex drive maintains integrity during high-torque installation, preventing fastener failure in heavy-duty applications. The black-oxide surface treatment provides corrosion protection without dimensional changes, making these headless set screws ideal for space-constrained assemblies in automotive, manufacturing, and power transmission systems.
Specification Summary & Compliance
This precision fastener features 3/8"-24 UNF fine threads with Class 3A thread fit for exceptional dimensional accuracy. Manufactured to ASME B18.3 specifications with Rockwell C45 hardness certification. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The right-hand thread direction and 1" length provide standardized installation across compatible applications.
