Value Collection 40541 Set Screw 3/8-16 X 1/2 in Grade 8 25pk

Product Description

The VALUE COLLECTION 40541 is a Grade 8 alloy steel set screw designed to secure components onto shafts or within bores without a protruding head. Threaded 3/8-16 UNC with an overall length of 0.5 inches, this fastener features a knurled cup point that bites into the mating surface to resist rotation and axial movement under load. Drive is a 3/16-inch hex key socket, conforming to ASME/ANSI B18.3 and ASTM F912 standards. Each package contains 25 pieces. Installation is performed by licensed mechanics, millwrights, and HVAC or plumbing technicians when securing pulleys, collars, and similar assemblies.

This set screw is suited for light industrial, commercial, and residential mechanical applications where a flush or recessed fastening solution is required. Common uses include securing fan blower wheels, shaft collars, and drive pulleys in HVAC equipment, as well as similar assemblies in plumbing and general mechanical systems. The knurled cup point provides positive grip on both hardened and softer shaft materials. The 25-piece package quantity suits service technicians who stock fastener assortments for field repairs.

Key Features

• Grade 8 alloy steel construction for high tensile and torsional strength
• Knurled cup point bites into mating shaft surface to resist loosening under vibration
• 3/8-16 UNC thread for broad compatibility with standard inch-series tapped holes
• 3/16-inch hex key drive per ASME/ANSI B18.3
• Meets ASTM F912 fastener standard
• Package of 25 pieces per order unit

Compatibility

Designed as a standard inch-series set screw for use in any 3/8-16 UNC tapped hole requiring a headless, knurled cup point fastener in Grade 8 alloy steel.

Installation Notes

Install with a 3/16-inch hex key (Allen wrench); de-energize and lock out all mechanical and electrical power to the assembly before service. Tighten to the torque requirements specified by the equipment manufacturer for Grade 8 fasteners of this thread size. Inspect the seating surface for burrs or debris before installation to ensure proper cup-point engagement. Always follow applicable mechanical codes and equipment OEM procedures when replacing or installing fasteners in rotating assemblies.