Value Collection 121181PR Set Screw 3/8-16 X 1 in Cone Point

Product Description

The VALUE COLLECTION 121181PR is a 3/8-16 cone point set screw designed for mechanical assemblies requiring a secure, permanent-style hold against a shaft or mating surface. Manufactured from Grade 8 alloy steel, this fastener delivers high tensile and torsional strength suitable for demanding industrial and trade applications. The cone point geometry bites into the mating surface to resist rotation and axial movement. It measures 1 inch in overall length and is driven with a 3/16-inch hex key. It conforms to ASME/ANSI B18.3 and ASTM F912 standards, making it a code-compliant choice for precision fastening tasks.

This set screw is used in mechanical power transmission assemblies, including shaft collars, pulleys, sprockets, gears, and couplings found in HVAC equipment, pumps, and general industrial machinery. The cone point style is best suited for installations where the screw will seat into a drilled indent on the shaft, providing a strong positive lock. Minimum order quantity is 10 pieces, sold in single-piece packaging increments. Suitable for both production and field-service applications where UNC-threaded set screws are specified.

Key Features

• Cone point tip bites into shaft surface for a strong, vibration-resistant lock
• Grade 8 alloy steel construction provides high tensile and torsional strength
• 3/8-16 UNC thread for broad compatibility with standard tapped holes
• Driven with a 3/16-inch hex key for access in tight mounting locations
• Conforms to ASME/ANSI B18.3 and ASTM F912 fastener standards
• 1-inch overall length suits moderate-depth shaft collar and hub applications

Compatibility

Designed as a standard UNC-threaded cone point set screw for use in any 3/8-16 tapped socket or collar requiring ASME/ANSI B18.3 and ASTM F912 compliant fasteners.

Installation Notes

Installation is performed with a 3/16-inch hex key; ensure the key is fully seated before applying torque to avoid rounding the drive socket. Power down or de-energize any equipment and lock out the shaft before installing or removing set screws. A center-punch indent on the shaft surface is recommended when using cone point screws to prevent shaft damage and improve holding strength. Follow applicable machinery and equipment manufacturer guidelines for proper seating procedure.