Value Collection 40547 Set Screw 3/8-24 X 3/4 in Grade 8

Product Description

The VALUE COLLECTION 40547 is a Grade 8 alloy steel set screw with a 3/8-24 UNF thread and an overall length of 3/4 inches. It features a knurled cup point designed to grip shaft surfaces and resist rotational loosening under load. Drive engagement is through a 3/16-inch hex key socket. The knurled cup point bites into the mating surface, providing higher holding power than a plain cup point. This fastener meets ASME/ANSI B18.3 and ASTM F912 standards, confirming dimensional and mechanical compliance. Sold in a package of 25, it suits production shops, MRO stockrooms, and field service kits that require consistent Grade 8 performance in threaded assemblies.

Grade 8 alloy steel set screws in this thread size are used across a wide range of mechanical assemblies including shaft collars, pulleys, sprockets, gears, and couplings in industrial, HVAC, and mechanical equipment applications. The 3/8-24 UNF fine thread pitch offers tighter clamp control in applications where vibration resistance and precise axial positioning matter. The package quantity of 25 makes this suitable for both single-job use and bin-stock replenishment in maintenance and fabrication environments.

Key Features

• Knurled cup point provides aggressive grip on shaft surfaces to resist loosening under vibration and torque
• Grade 8 alloy steel construction delivers high tensile and proof load strength
• 3/8-24 UNF fine thread for precise engagement and vibration-resistant clamping
• 3/16-inch hex key drive for standard Allen wrench installation
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and mechanical standards
• Package of 25 units supports both single-job use and bulk MRO stocking

Compatibility

Designed as an OEM-style replacement or direct-fit fastener for any mechanical assembly requiring a 3/8-24 UNF Grade 8 alloy steel set screw with a knurled cup point and 3/16-inch hex key drive.

Installation Notes

Installation requires a 3/16-inch hex key or Allen wrench. Ensure the mating threaded bore is clean and free of debris before threading the screw in by hand to avoid cross-threading. De-energize and lock out any rotating equipment before servicing assemblies that contain these fasteners. Do not exceed the fastener's rated clamp load by using extensions or impact tools on the hex key.