S-91381A682 1/2"-13 x 1 1/2" ASME B18.3 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 vibration resistance with Class 3A thread fit ensuring secure, long-term fastening in high-stress applications
- Enhanced corrosion protection through black-oxide coating on alloy steel, extending service life in demanding industrial environments
- Damage-free component protection with integrated brass soft tip that prevents marring on shafts and precision-machined parts
- Optimal torque transmission via 1/4" hex drive design, allowing for high tightening forces without head protrusion
- Exceptional mechanical strength from Rockwell C28 hardness rating, maintaining thread integrity under heavy loads
- Reliable coarse thread engagement with UNC 1/2"-13 specification, providing quick assembly and superior holding power
- Headless design advantage enabling flush mounting in confined spaces where clearance is limited
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical engineering solutions for industrial applications where vibration resistance and component protection are paramount. The Class 3A thread fit ensures precise engagement with mating components, eliminating play in rotating assemblies while the brass soft tip prevents damage to expensive shafts and precision equipment. The headless configuration with hex drive provides optimal torque application in space-constrained installations, making it ideal for machinery, power transmission systems, and automotive applications. The combination of Rockwell C28 hardness and coarse UNC threading creates a robust fastening solution that maintains clamping force under extreme operational conditions, reducing maintenance frequency and downtime.
Specification Summary & Compliance
Manufactured to ASME B18.3 standards with Class 3A thread fit precision for superior dimensional accuracy. Features 1/2"-13 UNC coarse threads with right-hand direction and 1-1/2" length. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
