Value Collection 111337PR Set Screw 5/16-18 X 1-1/4 in Grade 8

Product Description

The VALUE COLLECTION 111337PR is a Grade 8 alloy steel set screw designed for secure, tool-free-removal locking of hubs, collars, pulleys, and similar components onto shafts. The knurled cup point bites into the mating surface to resist rotational and axial movement under load. Drive is a 5/32-inch hex socket, compatible with standard hex keys and T-handle drivers. Thread size is 5/16-18 UNC with an overall length of 1-1/4 inches. This fastener meets ASME/ANSI B18.3 and ASTM F912 standards, confirming dimensional and mechanical compliance for industrial and commercial applications. Installed by millwrights, maintenance technicians, and assembly professionals.

This set screw is used in shaft-to-hub assemblies across a wide range of mechanical and industrial applications, including HVAC blower wheel hubs, motor pulleys, conveyor components, and general power-transmission equipment. The 5/16-18 UNC thread and 1-1/4-inch overall length suit medium-duty collar and hub fastening where a positive bite point is required. The knurled cup point is particularly effective on softer shaft materials where a permanent indentation seat is acceptable. Sold individually with a minimum order quantity of 10 pieces.

Key Features

• Knurled cup point for positive grip and resistance to rotation and axial movement
• Grade 8 alloy steel construction for high tensile and torsional strength
• 5/16-18 UNC thread meets ASME/ANSI B18.3 and ASTM F912 standards
• 5/32-inch hex drive accepts standard hex keys and T-handle wrenches
• 1-1/4-inch overall length suits medium-depth collar and hub applications

Compatibility

Designed as a standard 5/16-18 UNC set screw for use in any hub, collar, pulley, or mechanical assembly that accepts a 5/16-18 knurled cup point fastener per ASME/ANSI B18.3.

Installation Notes

Installation is typically performed by maintenance technicians or millwrights using a 5/32-inch hex key or T-handle driver. De-energize and lock out all rotating equipment before installing or removing set screws in accordance with applicable OSHA lockout/tagout procedures. Ensure the shaft and cup point seat are clean and free of debris before torquing. Do not use an extension bar on the hex key, as overdriving can strip threads or damage the shaft.