Value Collection 40550 Set Screw 7/16-14 X 1/2 in Grade 8 25pk

Product Description

The VALUE COLLECTION 40550 is a Grade 8 alloy steel set screw designed for secure, tool-driven fastening in mechanical assemblies. At 7/16-14 thread size and 1/2 inch length, this fastener uses a 7/32 inch hex key drive and features a knurled cup point that bites into the mating surface to resist rotation and axial movement. Manufactured to ASME/ANSI B18.3 and ASTM F912 standards, it delivers the dimensional accuracy and tensile strength that maintenance techs, millwrights, and industrial tradespeople require for reliable holding power. Each package contains 25 pieces.

This set screw is suited for shaft-to-hub connections, collar positioning, and similar mechanical retention applications across HVAC equipment, pumping systems, fan assemblies, and general industrial machinery. The knurled cup point is particularly effective on shafts where positive grip is needed without a set screw flat. Installers typically use these in environments where vibration could cause conventional smooth-point fasteners to back out. The UNC thread form is standard for inch-dimensioned mechanical assemblies in North American trade work.

Key Features

• Grade 8 alloy steel construction for high tensile and torsional strength
• Knurled cup point digs into shaft material for superior grip and vibration resistance
• 7/32 inch hex key drive for precise torque application with standard Allen wrenches
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and performance standards
• UNC thread form (7/16-14) for compatibility with standard inch-dimensioned hardware
• Sold in a 25-piece package for bench stock and service truck inventory

Compatibility

Designed as a standard UNC inch-series set screw for use in any mechanical assembly requiring a 7/16-14 threaded socket with a hex drive and cup point fastener.

Installation Notes

Set screws of this type are installed by licensed millwrights, HVAC technicians, and maintenance tradespeople using a properly sized hex key or Allen driver. De-energize and lock out all rotating equipment before installation or removal. Avoid using an oversized hex key, as rounding the socket will require extraction. Follow equipment manufacturer torque specifications and applicable ASME standards for final seating.