Value Collection 101661BR Set Screw 3/4-10 X 1 in Cup Point

Product Description

The VALUE COLLECTION 101661BR is a 3/4-10 UNC cup point set screw manufactured from Grade 8 alloy steel. Set screws are headless fasteners threaded along their full length and used to secure a component — such as a collar, pulley, or gear — against a shaft or within a bore. The cup point bites into the mating surface to resist rotation and axial movement under load. This screw measures 1 inch in overall length and is driven with a 3/8-inch hex key. It meets ASME/ANSI B18.3 and ASTM F912 standards. Machinists, millwrights, and maintenance technicians are the primary installers of this fastener class.

This set screw is suited for mechanical assemblies in industrial, commercial, and maintenance applications where a flush or below-surface fastener is required. Typical uses include shaft-collar retention, sprocket and pulley lockdown, and positioning fixtures. The 3/4-10 coarse thread offers strong thread engagement in steel and iron components. The Grade 8 alloy steel construction provides high tensile strength, making it appropriate for moderate-to-high load applications where a lower-grade fastener would be insufficient.

Key Features

• Cup point geometry bites into shaft surface for positive resistance to rotation and axial shift
• Grade 8 alloy steel construction provides high tensile and proof load strength
• 3/4-10 UNC coarse thread for reliable engagement in standard threaded bores
• 3/8-inch hex drive accepts standard hex keys and T-handle drivers
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and mechanical standards
• Headless design sits flush or below the mating surface to eliminate protrusion hazards

Compatibility

Designed as a standard replacement or stock fastener for any application requiring a 3/4-10 UNC cup point set screw conforming to ASME/ANSI B18.3 and ASTM F912.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a 3/8-inch hex key or L-wrench. Ensure the threaded bore is clean and free of debris before driving the screw. De-energize and lock out any rotating or powered equipment before installing or removing set screws on shafts. Do not exceed the torque capacity of the hex drive socket, as alloy set screws are susceptible to drive recess damage if an improperly sized key is used.