S-91375A603 1 1/4"-7 x 1 1/4" 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 industrial environments
- Exceptional torque transmission through 5/8" hex drive design, preventing tool slippage during high-tension applications
- Precision thread engagement with Class 3A fit ensuring reliable fastening without cross-threading risks
- Maximum material hardness at Rockwell C45 rating for superior wear resistance and repeated use capability
- Optimized for heavy-duty applications with coarse UNC threads providing faster installation and higher vibration resistance
- Cup tip design creates secure biting action on shaft surfaces, preventing component slippage
- Full regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for global industrial acceptance
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical performance in power transmission systems, machinery assembly, and precision equipment where vibration resistance and positioning accuracy are paramount. The headless design with 5/8" hex drive enables flush mounting in confined spaces while providing substantial torque capability. The Class 3A UNC coarse thread ensures rapid installation in high-volume production environments, while the cup tip configuration generates superior clamping force on shafts and collars. Engineered for industrial set screw applications requiring repeated adjustment cycles, the Rockwell C45 hardness maintains thread integrity against wear, making it ideal for manufacturing equipment, automotive components, and heavy machinery where reliable fastening solutions prevent costly downtime.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit precision for inch-measurement applications. Features 1 1/4"-7 UNC coarse threads with right-hand direction and cup tip configuration. The black-oxide alloy steel construction meets Rockwell C45 hardness standards. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial markets and restricted substance requirements.
